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40 results on '"ISM: cloud"'

1. AzTEC survey of the central molecular zone: data reduction, analysis, and preliminary results.

Author: Tang, Yuping, Wang, Q Daniel, Wilson, Grant W, Heyer, Mark H, Gutermuth, Robert A, Schloerb, Peter, Yun, Min S, Bally, John, Loinard, Laurent, Silich, Sergiy, Chávez, Miguel, Haggard, Daryl, Montaña, Alfredo, Sánchez-Argüelles, David, Zeballos, Milagros, Zavala, Jorge A, and León-Tavares, Jonathan
Subjects: *DUST explosions, *DATA reduction, *SPECTRAL energy distribution, *SEWERAGE, *TELESCOPES, *LIGHT curves
Abstract: We present a large-scale survey of the central molecular zone (CMZ) of our Galaxy, as well as a monitoring program of Sgr A*, with the AzTEC/ Large Millimeter Telescope in the 1.1 mm continuum. Our 1.1 mm map covers the main body of the CMZ over a field of 1.6 × 1.1 deg2 with an angular resolution of 10.5 arcsec and a depth of 15 mJy beam−1. To account for the intensity loss due to the background removal process, we combine this map with lower resolution CSO/Bolocam and Planck /HFI data to produce an effective full intensity 1.1 mm continuum map. With this map and existing Herschel surveys, we have carried out a comprehensive analysis of the spectral energy distribution of dust in the CMZ. A key component of this analysis is the implementation of a model-based deconvolution approach, incorporating the Point Spread Functions (PSFs) of the different instruments, and hence recovering a significant amount of spatial information on angular scales larger than 10.5 arcsec. The monitoring of Sgr A* was carried out as part of a worldwide, multiwavelength campaign when the so-called G2 object was undergoing the pericentre passage around the massive black hole. Our preliminary results include (1) high-resolution maps of column density, temperature and dust spectral index across the CMZ; (2) a 1.1 mm light curve of Sgr A* showing an outburst of |$140{{\ \rm per\ cent}}$| maximum amplitude on 2014 May 9th May, 2014 but otherwise only stochastic variations of |$10{{\ \rm per\ cent}}$| and no systematic long-term change, consistent with other observations. [ABSTRACT FROM AUTHOR]
Published: 2021
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2. Pulsar Scintillation Studies with LOFAR: II. Dual-frequency scattering study of PSR??J0826+2637 with LOFAR and NenuFAR

Author: Wu, Z, A Coles, W, W Verbiest, J, Moochickal Ambalappat, K, Tiburzi, C, Grie??meier, J, A Main, R, Liu, Y, Kramer, M, Wucknitz, O, Porayko, N, Os??owski, S, Bak Nielsen, A, Y Donner, J, Hoeft, M, Br??ggen, M, Vocks, C, Dettmar, R, Theureau, G, Serylak, M, Kondratiev, V, W McKee, J, Shaifullah, G, P Kravtsov, I, V Zakharenko, V, Ulyanov, O, O Konovalenko, O, Zarka, P, Cecconi, B, E Koopmans, L, Corbel, S, Ziwei Wu, William A Coles, Joris P W Verbiest, Krishnakumar Moochickal Ambalappat, Caterina Tiburzi, Jean-Mathias Grie??meier, Robert A Main, Yulan Liu, Michael Kramer, Olaf Wucknitz, Nataliya Porayko, Stefan Os??owski, Ann-Sofie Bak Nielsen, Julian Y Donner, Matthias Hoeft, Marcus Br??ggen, Christian Vocks, Ralf-J??rgen Dettmar, Gilles Theureau, Maciej Serylak, Vladislav Kondratiev, James W McKee, Golam Shaifullah, Ihor P Kravtsov, Vyacheslav V Zakharenko, Oleg Ulyanov, Olexandr O Konovalenko, Philippe Zarka, Baptiste Cecconi, L??on V E Koopmans, St??phane Corbel, Wu, Z, A Coles, W, W Verbiest, J, Moochickal Ambalappat, K, Tiburzi, C, Grie??meier, J, A Main, R, Liu, Y, Kramer, M, Wucknitz, O, Porayko, N, Os??owski, S, Bak Nielsen, A, Y Donner, J, Hoeft, M, Br??ggen, M, Vocks, C, Dettmar, R, Theureau, G, Serylak, M, Kondratiev, V, W McKee, J, Shaifullah, G, P Kravtsov, I, V Zakharenko, V, Ulyanov, O, O Konovalenko, O, Zarka, P, Cecconi, B, E Koopmans, L, Corbel, S, Ziwei Wu, William A Coles, Joris P W Verbiest, Krishnakumar Moochickal Ambalappat, Caterina Tiburzi, Jean-Mathias Grie??meier, Robert A Main, Yulan Liu, Michael Kramer, Olaf Wucknitz, Nataliya Porayko, Stefan Os??owski, Ann-Sofie Bak Nielsen, Julian Y Donner, Matthias Hoeft, Marcus Br??ggen, Christian Vocks, Ralf-J??rgen Dettmar, Gilles Theureau, Maciej Serylak, Vladislav Kondratiev, James W McKee, Golam Shaifullah, Ihor P Kravtsov, Vyacheslav V Zakharenko, Oleg Ulyanov, Olexandr O Konovalenko, Philippe Zarka, Baptiste Cecconi, L??on V E Koopmans, and St??phane Corbel
Abstract: Interstellar scattering (ISS) of radio pulsar emission can be used as a probe of the ionized interstellar medium (IISM) and causes corruptions in pulsar timing experiments. Two types of ISS phenomena (intensity scintillation and pulse broadening) are caused by electron density fluctuations on small scales (< 0.01 au). Theory predicts that these are related, and both have been widely employed to study the properties of the IISM. Larger scales (similar to 1 - 100 au) cause measurable changes in dispersion and these can be correlated with ISS observations to estimate the fluctuation spectrum over a very wide scale range. IISM measurements can often be modelled by a homogeneous power-law spatial spectrum of electron density with the Kolmogorov (-11/3) spectral exponent. Here, we aim to test the validity of using the Kolmogorov exponent with PSR J0826+2637. We do so using observations of intensity scintillation, pulse broadening and dispersion variations across a wide fractional bandwidth (20-180 MHz). We present that the frequency dependence of the intensity scintillation in the high-frequency band matches the expectations of a Kolmogorov spectral exponent, but the pulse broadening in the low-frequency band does not change as rapidly as predicted with this assumption. We show that this behaviour is due to an inhomogeneity in the scattering region, specifically that the scattering is dominated by a region of transverse size similar to 40 au. The power spectrum of the electron density, however, maintains the Kolmogorov spectral exponent from spatial scales of 5 x 10(-6) au to similar to 100 au.
Published: 2023

3. Pulsar Scintillation Studies with LOFAR: II. Dual-frequency scattering study of PSR J0826+2637 with LOFAR and NenuFAR

Author: Ziwei Wu, William A Coles, Joris P W Verbiest, Krishnakumar Moochickal Ambalappat, Caterina Tiburzi, Jean-Mathias Grießmeier, Robert A Main, Yulan Liu, Michael Kramer, Olaf Wucknitz, Nataliya Porayko, Stefan Osłowski, Ann-Sofie Bak Nielsen, Julian Y Donner, Matthias Hoeft, Marcus Brüggen, Christian Vocks, Ralf-Jürgen Dettmar, Gilles Theureau, Maciej Serylak, Vladislav Kondratiev, James W McKee, Golam M Shaifullah, Ihor P Kravtsov, Vyacheslav V Zakharenko, Oleg Ulyanov, Olexandr O Konovalenko, Philippe Zarka, Baptiste Cecconi, Léon V E Koopmans, Stéphane Corbel, Wu, Z, A Coles, W, W Verbiest, J, Moochickal Ambalappat, K, Tiburzi, C, Grie??meier, J, A Main, R, Liu, Y, Kramer, M, Wucknitz, O, Porayko, N, Os??owski, S, Bak Nielsen, A, Y Donner, J, Hoeft, M, Br??ggen, M, Vocks, C, Dettmar, R, Theureau, G, Serylak, M, Kondratiev, V, W McKee, J, Shaifullah, G, P Kravtsov, I, V Zakharenko, V, Ulyanov, O, O Konovalenko, O, Zarka, P, Cecconi, B, E Koopmans, L, Corbel, S, Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Unité Scientifique de la Station de Nançay (USN), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Univers et Théories (LUTH (UMR_8102)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Observatoire de Paris - Site de Paris (OP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), ISM: cloud, Space and Planetary Science, pulsars: general, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], ISM: clouds, pulsars: individual: PSR J0826+2637
Abstract: Interstellar scattering (ISS) of radio pulsar emission can be used as a probe of the ionised interstellar medium (IISM) and causes corruptions in pulsar timing experiments. Two types of ISS phenomena (intensity scintillation and pulse broadening) are caused by electron density fluctuations on small scales (< 0.01 AU). Theory predicts that these are related, and both have been widely employed to study the properties of the IISM. Larger scales ($\sim$1-100\,AU) cause measurable changes in dispersion and these can be correlated with ISS observations to estimate the fluctuation spectrum over a very wide scale range. IISM measurements can often be modeled by a homogeneous power-law spatial spectrum of electron density with the Kolmogorov ($-11/3$) spectral exponent. Here we aim to test the validity of using the Kolmogorov exponent with PSR~J0826+2637. We do so using observations of intensity scintillation, pulse broadening and dispersion variations across a wide fractional bandwidth (20 -- 180\,MHz). We present that the frequency dependence of the intensity scintillation in the high frequency band matches the expectations of a Kolmogorov spectral exponent but the pulse broadening in the low frequency band does not change as rapidly as predicted with this assumption. We show that this behavior is due to an inhomogeneity in the scattering region, specifically that the scattering is dominated by a region of transverse size $\sim$40\,AU. The power spectrum of the electron density, however, maintains the Kolmogorov spectral exponent from spatial scales of 5$\times10^{-6}$\,AU to $\sim$100\,AU., Accepted for publication in MNRAS, typo fixed
Published: 2023

4. Gravitational Collapse of Rotating Clouds: Bar Formation in a Self-Similarly Contracting Disk

Author: Matsumoto, Tomoaki, Hanawa, Tomoyuki, Ebisuzaki, T., editor, and Makino, J., editor
Published: 2001
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5. Precursors of fatty alcohols in the ISM: Discovery of n-propanol

Author: Izaskun Jiménez-Serra, Lucas F. Rodríguez-Almeida, Jesús Martín-Pintado, Víctor M. Rivilla, Mattia Melosso, Shaoshan Zeng, Laura Colzi, Yoshiyuki Kawashima, Eizi Hirota, Cristina Puzzarini, Belén Tercero, Pablo de Vicente, Fernando Rico-Villas, Miguel A. Requena-Torres, Sergio Martín, Izaskun Jiménez-Serra, Lucas F. Rodríguez-Almeida, Jesús Martín-Pintado, Víctor M. Rivilla, Mattia Melosso, Shaoshan Zeng, Laura Colzi, Yoshiyuki Kawashima, Eizi Hirota, Cristina Puzzarini, Belén Tercero, Pablo de Vicente, Fernando Rico-Villa, Miguel A. Requena-Torre, and Sergio Martín
Subjects: Galaxy: center, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, ISM: cloud, astrochemistry, Astrophysics of Galaxies (astro-ph.GA), FOS: Physical sciences, Astronomy and Astrophysics, ISM: molecule, Astrophysics - Astrophysics of Galaxies, Solar and Stellar Astrophysics (astro-ph.SR), line: identification
Abstract: Theories on the origins of life propose that early cell membranes were synthesized from amphiphilic molecules simpler than phospholipids such as fatty alcohols. The discovery in the interstellar medium (ISM) of ethanolamine, the simplest phospholipid head group, raises the question whether simple amphiphilic molecules are also synthesized in space. We investigate whether precursors of fatty alcohols are present in the ISM. For this, we have carried out a spectral survey at 7, 3, 2 and 1 mm toward the Giant Molecular Cloud G+0.693-0.027 located in the Galactic Center using the IRAM 30m and Yebes 40m telescopes. Here, we report the detection in the ISM of the primary alcohol n-propanol (in both conformers Ga-n-C3H7OH and Aa-n-C3H7OH), a precursor of fatty alcohols. The derived column densities of n-propanol are (5.5+-0.4)x10^13 cm^-2 for the Ga conformer and (3.4+-0.3)x10^13 cm^-2 for the Aa conformer, which imply molecular abundances of (4.1+-0.3)x10^-10 for Ga-n-C3H7OH and of (2.5+-0.2)x10^-10 for Aa-n-C3H7OH. We also searched for the AGa conformer of n-butanol (AGa-n-C4H9OH) without success yielding an upper limit to its abundance of, 15 pages, 10 figures, accepted for A&A
Published: 2022

6. CHEMOUT: CHEMical complexity in star-forming regions of the OUTer Galaxy

Author: F. Fontani, A. Schmiedeke, A. Sánchez-Monge, L. Colzi, D. Elia, V. M. Rivilla, M. T. Beltrán, L. Bizzocchi, P. Caselli, L. Magrini, D. Romano, F. Fontani, A. Schmiedeke, A. Sánchez-Monge, L. Colzi, D. Elia, V. M. Rivilla, M. T. Beltrán, L. Bizzocchi, P. Caselli, L. Magrini, and D. Romano
Subjects: stars: formation, ISM: cloud, ISM: molecules
Abstract: Context. The outer Galaxy is an environment with a lower metallicity than the regions surrounding the Sun and for this reason the formation and survival of molecules in star-forming regions located in the inner and outer Galaxy are expected to be different.Aims. To gain understanding of how chemistry changes throughout the Milky Way, it is crucial to observe the outer star-forming regions of the Galaxy in order to constrain models adapted for lower metallicity environments.Methods. The project 'chemical complexity in star-forming regions of the outer Galaxy' (CHEMOUT) is designed to address this problem by observing a sample of 35 star-forming cores at Galactocentric distances of up to similar to 23 kpc with the Institut de RadioAstronomie Millimetrique (IRAM) 30 m telescope in various 3 mm and 2 mm bands. In this work, we analyse observations of methanol (CH3OH), one of the simplest complex organic molecules and crucial for organic chemistry in star-forming regions, and of two chemically related species, HCO and formaldehyde (H2CO), towards 15 out of the 35 targets of the CHEMOUT sample. More specifically, we consider only the targets for which both HCO and H2CO were previously detected, which are precursors of CH3OH.Results. We detected CH3OH in all 15 targets. The emission is associated with an extended envelope, as the average angular size is similar to 47 '' (i.e. similar to 2.3 pc at a representative heliocentric distance of 10 kpc). Using a local thermodynamic equilibrium approach, we derive CH3OH excitation temperatures in the range similar to 7-16 K and line widths
Published: 2022

7. CHEMOUT: CHEMical complexity in star-forming regions of the OUTer Galaxy. I. Organic molecules and tracers of star-formation activity

Author: Fontani, F., Colzi, L., Bizzocchi, L., Rivilla, V. M., Elia, D., Beltrán, M. T., Caselli, P., Magrini, L., Sánchez-Monge, A., Testi, L., Romano, D., F. Fontani, L. Colzi, L. Bizzocchi, V. M. Rivilla, D. Elia, M. T. Beltrán, P. Caselli, L. Magrini, A. Sánchez-Monge, L. Testi, and D. Romano
Subjects: radio lines: ISM, stars: formation, Space and Planetary Science, ISM: cloud, Astrophysics of Galaxies (astro-ph.GA), FOS: Physical sciences, Astronomy and Astrophysics, ISM: molecule, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics::Galaxy Astrophysics
Abstract: The outer Galaxy is an environment with metallicity lower than the Solar one. Because of this, the formation and survival of molecules in star-forming regions located in the inner and outer Galaxy is expected to be different. To gain understanding on how chemistry changes throughout the Milky Way, it is crucial to observe outer Galaxy star-forming regions to constrain models adapted for lower metallicity environments. In this paper we present a new observational project: chemical complexity in star-forming regions of the outer Galaxy (CHEMOUT). The goal is to unveil the chemical composition in 35 dense molecular clouds associated with star-forming regions of the outer Galaxy through observations obtained with the IRAM 30m telescope. In this first paper, we present the sample, and report the detection at 3~mm of simple organic species HCO+, H13CO+, HCN, c-C3H2, HCO, C4H, and HCS+, of the complex hydrocarbon CH3CCH, and of SiO, CCS and SO. From c-C3H2, we estimate new kinematic heliocentric and Galactocentric distances based on an updated rotation curve of the Galaxy. The detection of the molecular tracers does not seem to have a clear dependence on the Galactocentric distance. We also analyse the HCO+ line profiles. We find high velocity wings in ~71% of the targets, and their occurrence does not depend on the Galactocentric distance. Our results, confirmed by a statistical analysis, show that the presence of organic molecules and tracers of protostellar activity is ubiquitous in the low-metallicity environment of the outer Galaxy. Based on this, and on the additional evidence that small, terrestrial planets are omnipresent in the Galaxy, we support previous claims that the definition of Galactic Habitable Zone should be rediscussed in view of the ubiquitous capacity of the interstellar medium to form organic molecules., Comment: 11 pages, 5 figures, 3 appendices, accepted for publication in A&A
Published: 2022
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8. Formation and evolution of young massive clusters in galaxy mergers: the SMUGGLE view

Author: Hui Li, Mark Vogelsberger, Greg L Bryan, Federico Marinacci, Laura V Sales, Paul Torrey, Hui Li, Mark Vogelsberger, Greg L Bryan, Federico Marinacci, Laura V Sale, and Paul Torrey
Subjects: Space and Planetary Science, ISM: cloud, galaxies: interaction, Astrophysics of Galaxies (astro-ph.GA), galaxies: star clusters: general, galaxies: structure, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics::Galaxy Astrophysics, methods: numerical
Abstract: Galaxy mergers are known to host abundant young massive cluster (YMC) populations, whose formation mechanism is still not well-understood. Here, we present a high-resolution galaxy merger simulation with explicit star formation and stellar feedback prescriptions to investigate how mergers affect the properties of the interstellar medium and YMCs. Compared with a controlled simulation of an isolated galaxy, the mass fraction of dense and high-pressure gas is much higher in mergers. Consequently, the mass function of both molecular clouds and YMCs becomes shallower and extends to higher masses. Moreover, cluster formation efficiency is significantly enhanced and correlates positively with the star formation rate surface density and gas pressure. We track the orbits of YMCs and investigate the time evolution of tidal fields during the course of the merger. At an early stage of the merger, the tidal field strength correlates positively with YMC mass, $\lambda_{\rm tid}\propto M^{0.71}$, which systematically affects the shape of the mass function and age distribution of the YMCs. At later times, most YMCs closely follow the orbits of their host galaxies, gradually sinking into the center of the merger remnant due to dynamical friction, and are quickly dissolved via efficient tidal disruption. Interestingly, YMCs formed during the first passage, mostly in tidal tails and bridges, are distributed over a wide range of galactocentric radii, greatly increasing their survivability because of the much weaker tidal field in the outskirts of the merger system. These YMCs are promising candidates for globular clusters that survive to the present day., Comment: 15 pages, 12 figures. MNRAS accepted on Mar. 9th
Published: 2021
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9. The Hi-GAL catalogue of dusty filamentary structures in the Galactic Plane

Author: Stefano Pezzuto, Alberto Noriega-Crespo, Manuel Merello, David Eden, Giuseppe Riccio, Luca Olmi, Fabio Vitello, Nicolas Peretto, Sergio Molinari, Eva Sciacca, Eugenio Schisano, G. Li Causi, P. Palmeirim, Annie Zavagno, M. T. Beltrán, A. M. di Giorgio, M. Benedettini, Anthony Peter Whitworth, Toby J. T. Moore, Massimo Brescia, Davide Elia, Marco Molinaro, Leonardo Testi, Ugo Becciani, L. Cambresy, G. Umana, A. Baldeschi, S. J. Liu, Alessio Traficante, Stefano Cavuoti, Istituto di Astrofisica e Planetologia Spaziali - INAF (IAPS), Istituto Nazionale di Astrofisica (INAF), INAF - Osservatorio Astronomico di Capodimonte (OAC), University of Naples Federico II, Liverpool John Moores University (LJMU), Space Telescope Science Institute (STSci), INAF - Osservatorio Astrofisico di Catania (OACT), School of Physics and Astronomy [Cardiff], Cardiff University, Departamento de Astronomia (DAS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astrofisico di Arcetri (OAA), Observatoire astronomique de Strasbourg (ObAS), Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astronomico di Roma (OAR), INAF - Osservatorio Astronomico di Trieste (OAT), Instituto de Astrofísica e Ciências do Espaço (IASTRO), European Southern Observatory (ESO), Schisano, E., Molinari, S., Elia, D., Benedettini, M., Olmi, L., Pezzuto, S., Traficante, A., Brescia, M., Cavuoti, S., di Giorgio, A. M., Liu, S. J., Moore, T. J. T., Noriega-Crespo, A., Riccio, G., Baldeschi, A., Becciani, U., Peretto, N., Merello, M., Vitello, F., Zavagno, A., Beltran, M. T., Cambresy, L., Eden, D. J., Li Causi, G., Molinaro, M., Palmeirim, P., Sciacca, E., Testi, L., Umana, G., Whitworth, A. P., and University of Naples Federico II = Università degli studi di Napoli Federico II
Subjects: Milky Way, Stars: formation, Extinction (astronomy), FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Protein filament, ISM: cloud, 0103 physical sciences, Submillimeter: ISM, 010303 astronomy & astrophysics, Galaxy: structure, Solar and Stellar Astrophysics (astro-ph.SR), ISM, Astrophysics::Galaxy Astrophysics, QC, ISM: general, QB, Physics, Infrared: ISM, Spiral galaxy, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Star formation, Molecular cloud, SM: clouds, Astronomy and Astrophysics, Dust, Extinction, Galactic plane, Galaxy: local interstellar matter, Astrophysics - Astrophysics of Galaxies, Galaxy, ISM: dust, Galaxy:structure, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA)
Abstract: The recent data collected by {\it Herschel} have confirmed that interstellar structures with filamentary shape are ubiquitously present in the Milky Way. Filaments are thought to be formed by several physical mechanisms acting from the large Galactic scales down to the sub-pc fractions of molecular clouds, and they might represent a possible link between star formation and the large-scale structure of the Galaxy. In order to study this potential link, a statistically significant sample of filaments spread throughout the Galaxy is required. In this work we present the first catalogue of $32,059$ candidate filaments automatically identified in the Hi-GAL survey of the entire Galactic Plane. For these objects we determined morphological (length, $l^{a}$, and geometrical shape) and physical (average column density, $N_{\rm H_{2}}$, and average temperature, $T$) properties. We identified filaments with a wide range of properties: 2$'$\,$\leq l^{a}\leq$\, 100$'$, $10^{20} \leq N_{\rm H_{2}} \leq 10^{23}$\,cm$^{-2}$ and $10 \leq T\leq$ 35\,K. We discuss their association with the Hi-GAL compact sources, finding that the most tenuous (and stable) structures do not host any major condensation and we also assign a distance to $\sim 18,400$ filaments for which we determine mass, physical size, stability conditions and Galactic distribution. When compared to the spiral arms structure, we find no significant difference between the physical properties of on-arm and inter-arm filaments. We compared our sample with previous studies, finding that our Hi-GAL filament catalogue represents a significant extension in terms of Galactic coverage and sensitivity. This catalogue represents an unique and important tool for future studies devoted to understanding the filament life-cycle., 38 pages, 29 figures, 3 appendices
Published: 2020

10. Propargylimine in the laboratory and in space: Millimetre-wave spectroscopy and its first detection in the ISM

Author: Sergio Martín, Jesús Martín-Pintado, Jean-Claude Guillemin, Victor M. Rivilla, Barbara M. Giuliano, Luca Bizzocchi, Shaoshan Zeng, Andrea Pietropolli-Charmet, Paola Caselli, D. Prudenzano, M. A. Requena-Torres, Fernando Rico-Villas, Izaskun Jiménez-Serra, Bizzocchi L., Prudenzano D., Rivilla V.M., Pietropolli-Charmet A., Giuliano B.M., Caselli P., Martin-Pintado J., Jimenez-Serra I., Martin S., Requena-Torres M.A., Rico-Villas F., Zeng S., Guillemin J.-C., Max-Planck-Institut für Extraterrestrische Physik (MPE), Istituto Nazionale di Astrofisica (INAF), University of Ca’ Foscari [Venice, Italy], Spanish National Research Council (CSIC), European Southern Observatory (ESO), Joint ALMA Observatory (JAO), European Southern Observatory (ESO)-National Radio Astronomy Observatory (NRAO), Johns Hopkins University (JHU), Towson University [Towson, MD, United States], University of Maryland System, RIKEN - Institute of Physical and Chemical Research [Japon] (RIKEN), Institut des Sciences Chimiques de Rennes (ISCR), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), University Ca Foscari Venezia, CINECACINECA, Italy [HP10C2QE6F], European Union European Union (EU) [664931], Spanish FEDER [ESP2017-86582-C4-1-R], State Research Agency (AEI) Unidad de Excelencia Maria de Maeztu-Centro de Astrobiologia (INTA-CSIC) [MDM-2017-0737], program Physique et Chimie du Milieu Interstellaire (INSU-CNRS), Centre National d'Etudes Spatiales (CNES) Centre National D'etudes Spatiales, PHC Procope (CAMPUS France) [42516WC], DAADDeutscher Akademischer Austausch Dienst (DAAD) [57445281], RIKEN, European Project: 664931,H2020,H2020-MSCA-COFUND-2014,AstroFIt2(2015), Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737, Rico Villas, F. [0000-0002-5351-3497], Centre National D'Etudes Spatiales (CNES), European Research Council (ERC), Agencia Estatal de Investigación (AEI), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), CINECA, European Commission (EU), Spanish FEDER, PHC Procope (CAMPUS France), Deutscher Akademischer Austauschdienst (DAAD), and Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC
Subjects: Methods: laboratory: molecular, laboratory: molecular [Methods], ISM: clouds, ISM: molecules, Methods: observational, Molecular data, Techniques: spectroscopic, FOS: Physical sciences, Context (language use), Astrophysics, ISM: molecule, 01 natural sciences, Spectral line, spectroscopic [Techniques], Ab initio quantum chemistry methods, ISM: cloud, Distortion, 0103 physical sciences, [CHIM]Chemical Sciences, observational [Methods], Spectroscopy, 010303 astronomy & astrophysics, molecules [ISM], Settore CHIM/02 - Chimica Fisica, Physics, 010304 chemical physics, Spectrometer, Molecular cloud, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Interstellar medium, 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Atomic physics, clouds [ISM]
Abstract: Context. Small imines containing up to three carbon atoms are present in the interstellar medium (ISM). As alkynyl compounds are abundant in this medium, propargylimine (2-propyn-1-imine, HC C-CH =NH) thus represents a promising candidate for a new interstellar detection. Aims. The goal of the present work is to perform a comprehensive laboratory investigation of the rotational spectrum of propargylimine in its ground vibrational state in order to obtain a highly precise set of rest frequencies and to search for it in space. Methods. The rotational spectra of E and Z geometrical isomers of propargylimine have been recorded in the laboratory in the 83-500 GHz frequency interval. The measurements have been performed using a source-modulation millimetre-wave spectrometer equipped with a pyrolysis system for the production of unstable species. High-level ab initio calculations were performed to assist the analysis and to obtain reliable estimates for an extended set of spectroscopic quantities. We searched for propargylimine at 3 mm and 2 mm in the spectral survey of the quiescent giant molecular cloud G+0.693-0.027 located in the central molecular zone, close to the Galactic centre. Results. About 1000 rotational transitions have been recorded for the E-and Z-propargylimine, in the laboratory. These new data have enabled the determination of a very accurate set of spectroscopic parameters including rotational, quartic, and sextic centrifugal distortion constants. The improved spectral data allowed us to perform a successful search for this new imine in the G+0.693-0.027 molecular cloud. Eighteen lines of Z-propargylimine were detected at level >2.5σ, resulting in a column-density estimate of N = (0.24 ± 0.02) × 1014 cm-2. An upper limit was retrieved for the higher energy E isomer, which was not detected in the data. The fractional abundance (with respect to H2) derived for Z-propargylimine is 1.8 × 10-10. We discuss the possible formation routes by comparing the derived abundance with those measured in the source for possible chemical precursors., With funding from the Spanish government through the "María de Maeztu Unit of Excellence" accreditation (MDM-2017-0737)
Published: 2020

11. Collisionless shock heating of heavy ions in SN 1987A

Author: Fabio Reale, David N. Burrows, Kari A. Frank, Giovanni Peres, Oleh Petruk, Salvatore Orlando, Fabrizio Bocchino, Costanza Argiroffi, Marco Miceli, Miceli, Marco, Orlando, Salvatore, Burrows, David N., Frank, Kari A., Argiroffi, Costanza, Reale, Fabio, Peres, Giovanni, Petruk, Oleh, Bocchino, Fabrizio, ITA, USA, and UKR
Subjects: Shock wave, 010504 meteorology & atmospheric sciences, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Electron, Astrophysics, 01 natural sciences, magnetohydrodynamics (MHD), Spectral line, Ion, ISM: cloud, 0103 physical sciences, ISM: individual objects: SN 1987A, Supernova remnant, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, ISM: supernova remnant, acceleration of particle, 0105 earth and related environmental sciences, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Astronomy and Astrophysics, X-rays: ISM, Supernova, Electron temperature, Astrophysics - High Energy Astrophysical Phenomena, Heliosphere
Abstract: Astrophysical shocks at all scales, from those in the heliosphere up to the cosmological shock waves, are typically "collisionless", because the thickness of their jump region is much shorter than the collisional mean free path. Across these jumps, electrons, protons, and ions are expected to be heated at different temperatures. Supernova remnants (SNRs) are ideal targets to study collisionless processes because of their bright post-shock emission and fast shocks. Although optical observations of Balmer-dominated shocks in young SNRs showed that the post-shock proton temperature is higher than the electron temperature, the actual dependence of the post-shock temperature on the particle mass is still widely debated. We tackle this longstanding issue through the analysis of deep multi-epoch and high-resolution observations of the youngest nearby supernova remnant, SN 1987A, made with the Chandra X-ray telescope. We introduce a novel data analysis method by studying the observed spectra in close comparison with a dedicated full 3-D hydrodynamic simulation. The simulation is able to reproduce self-consistently the whole broadening of the spectral lines of many ions altogether. We can therefore measure the post shock temperature of protons and selected ions through comparison of the model with observations. We have obtained information about the heating processes in collisional shocks by finding that the ion to proton temperature ratio is always significantly higher than one and increases linearly with the ion mass for a wide range of masses and shock parameters., Comment: The final version of this manuscript (including Methods) is published in Nature Astronomy and is publicly available at this link: https://rdcu.be/bhO7Z
Published: 2019

12. Mapping deuterated methanol toward L1544: I. Deuterium fraction and comparison with modeling

Author: A. Vasyunin, Barbara M. Giuliano, Ana Chacón-Tanarro, Paola Caselli, Anna Punanova, Luca Bizzocchi, Jaime E. Pineda, Valerio Lattanzi, Silvia Spezzano, Olli Sipilä, Chacon-Tanarro A., Caselli P., Bizzocchi L., Pineda J.E., Sipila O., Vasyunin A., Spezzano S., Punanova A., Giuliano B.M., and Lattanzi V.
Subjects: INDIVIDUAL OBJECTS [ISM], Astrochemistry, Stars: formation, DEUTERIUM, Analytical chemistry, Formaldehyde, FOS: Physical sciences, Context (language use), DUST, Astrophysics, ISM: molecule, 01 natural sciences, INDIVIDUAL OBJECTS: L1544 [ISM], chemistry.chemical_compound, MOLECULES, ISM: cloud, Desorption, FORMATION [STARS], 0103 physical sciences, Isotopologue, FORMALDEHYDE, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Physics, ASTROCHEMISTRY, CHEMICAL ANALYSIS, 010308 nuclear & particles physics, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, CLOUDS [ISM], chemistry, Deuterium, Astrophysics - Solar and Stellar Astrophysics, 13. Climate action, Space and Planetary Science, ISM: individual objects: L1544, Astrophysics of Galaxies (astro-ph.GA), MOLECULES [ISM], Deuterated methanol, METHANOL, Methanol, STARS
Abstract: The study of deuteration in pre-stellar cores is important to understand the physical and chemical initial conditions in the process of star formation. In particular, observations toward pre-stellar cores of methanol and deuterated methanol, solely formed on the surface of dust grains, may provide useful insights on surface processes at low temperatures. Here we analyze maps of CO, methanol, formaldehyde and their deuterated isotopologues toward a well-known pre-stellar core. This study allows us to test current gas-dust chemical models. Single-dish observations of CH$_3$OH, CH$_2$DOH, H$_2$CO, H$_2\,^{13}$CO, HDCO, D$_2$CO and C$^{17}$O toward the prototypical pre-stellar core L1544 were performed at the IRAM 30 m telescope. We analyze their column densities, distributions, and compare these observations with gas-grain chemical models. The maximum deuterium fraction derived for methanol is [CH$_2$DOH]/[CH$_3$OH] $\sim$ 0.08$\pm$0.02, while the measured deuterium fractions of formaldehyde at the dust peak are [HDCO]/[H$_2$CO] $\sim$ 0.03$\pm$0.02, [D$_2$CO]/[H$_2$CO] $\sim$ 0.04$\pm$0.03 and [D$_2$CO]/[HDCO] $\sim$ 1.2$\pm$0.3. Observations differ significantly from the predictions of models, finding discrepancies between a factor of 10 and a factor of 100 in most cases. It is clear though that to efficiently produce methanol on the surface of dust grains, quantum tunneling diffusion of H atoms must be switched on. It also appears that the currently adopted reactive desorption efficiency of methanol is overestimated and/or that abstraction reactions play an important role. More laboratory work is needed to shed light on the chemistry of methanol, an important precursor of complex organic molecules in space., Accepted for publication in A&A
Published: 2019

13. High sensitivity maps of molecular ions in L1544: I. Deuteration of N2H+ and HCO+ and first evidence of N2D+ depletion

Author: Olli Sipilä, Valerio Lattanzi, S. Spezzano, Elena Redaelli, Barbara M. Giuliano, Paola Caselli, Luca Bizzocchi, Redaelli E., Bizzocchi L., Caselli P., Sipila O., Lattanzi V., Giuliano B.M., and Spezzano S.
Subjects: Thermodynamic equilibrium, Stars: formation, Analytical chemistry, FOS: Physical sciences, Context (language use), ISM: molecule, Astrophysics, 01 natural sciences, Ion, ISM: Abundance, ISM: cloud, Ionization, 0103 physical sciences, Radiative transfer, Molecule, 010303 astronomy & astrophysics, Radio lines: ISM, Solar and Stellar Astrophysics (astro-ph.SR), Physics, 010308 nuclear & particles physics, Star formation, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics, Deuterium, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA)
Abstract: Context. The deuterium fraction in low-mass prestellar cores is a good diagnostic indicator of the initial phases of star formations, and it is also a fundamental quantity to infer the ionisation degree in these objects. Aims. With the analysis of multiple transitions of $\rm N_2H^+$, $\rm N_2D^+$, $\rm HC^{18}O^+$ and $\rm DCO^+$ we are able to determine the molecular column density maps and the deuterium fraction in $\rm N_2H^+$ and $\rm HCO^+$ toward the prototypical prestellar core L1544. This is the preliminary step to derive the ionisation degree in the source. Methods. We use a non-local thermodynamic equilibrium (non-LTE) radiative transfer code, combined with the molecular abundances derived from a chemical model, to infer the excitation conditions of all the observed transitions, which allows us to derive reliable maps of each molecule's column density. The ratio between the column density of a deuterated species and its non-deuterated counterpart gives the searched deuteration level. Results. The non-LTE analysis confirms that, for the analysed molecules, higher-J transitions are characterised by excitation temperatures $\approx 1-2\,$K lower than the lower-J ones. The chemical model that provides the best fit to the observational data predict the depletion of $\rm N_2H^+$ and to a lesser extent of $\rm N_2D^+$ in the innermost region. The peak values for the deuterium fraction that we find are $\mathrm{D/H_{N_2H^+}} = 0.26^{+0.15}_{-0.14}$ and $\mathrm{D/H_{HCO^+}} = 0.035^{+0.015}_{-0.012}$, in good agreement with previous estimates in the source., Comment: Accepted for publication on A&A on 18/7/19
Published: 2019
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14. The chemical structure of the very young starless core L1521E

Author: A. Vasyunin, Elena Redaelli, Z. Nagy, Paola Caselli, Luca Bizzocchi, D. Prudenzano, Silvia Spezzano, M. Tafalla, Nagy Z., Spezzano S., Caselli P., Vasyunin A., Tafalla M., Bizzocchi L., Prudenzano D., and Redaelli E.
Subjects: CONTINUUM EMISSION, TRANSITION REGIONS, Chemical structure, Continuum (design consultancy), Analytical chemistry, chemistry.chemical_element, SULFUR, FOS: Physical sciences, Context (language use), DUST, Astrophysics, ISM: molecule, 01 natural sciences, chemistry.chemical_compound, MOLECULES, STRUCTURE (COMPOSITION), Abundance (ecology), ISM: cloud, 0103 physical sciences, Molecule, PHYSICAL CONDITIONS, 010303 astronomy & astrophysics, Radio lines: ISM, DYNAMICAL EVOLUTION, Physics, 010308 nuclear & particles physics, Molecular cloud, Astronomy and Astrophysics, ISM [RADIO LINES], Sulfur, Astrophysics - Astrophysics of Galaxies, DEPLETION FACTORS, CLOUDS [ISM], chemistry, Space and Planetary Science, MOLECULES [ISM], Astrophysics of Galaxies (astro-ph.GA), TELESCOPES, METHANOL, Methanol, STARS
Abstract: L1521E is a dense starless core in Taurus that was found to have relatively low molecular depletion by earlier studies, thus suggesting a recent formation. We aim to characterize the chemical structure of L1521E and compare it to the more evolved L1544 pre-stellar core. We have obtained $\sim$2.5$\times$2.5 arcminute maps toward L1521E using the IRAM-30m telescope in transitions of various species. We derived abundances for the species and compared them to those obtained toward L1544. We estimated CO depletion factors. Similarly to L1544, $c$-C$_3$H$_2$ and CH$_3$OH peak at different positions. Most species peak toward the $c$-C$_3$H$_2$ peak. The CO depletion factor derived toward the $Herschel$ dust peak is 4.3$\pm$1.6, which is about a factor of three lower than that toward L1544. The abundances of sulfur-bearing molecules are higher toward L1521E than toward L1544 by factors of $\sim$2-20. The abundance of methanol is similar toward the two cores. The higher abundances of sulfur-bearing species toward L1521E than toward L1544 suggest that significant sulfur depletion takes place during the dynamical evolution of dense cores, from the starless to pre-stellar stage. The CO depletion factor measured toward L1521E suggests that CO is more depleted than previously found. Similar CH$_3$OH abundances between L1521E and L1544 hint that methanol is forming at specific physical conditions in Taurus, characterized by densities of a few $\times$10$^4$ cm$^{-3}$ and $N$(H$_2$)$\gtrsim$10$^{22}$ cm$^{-2}$, when CO starts to catastrophically freeze-out, while water can still be significantly photodissociated, so that the surfaces of dust grains become rich in solid CO and CH$_3$OH, as already found toward L1544. Methanol can thus provide selective crucial information about the transition region between dense cores and the surrounding parent cloud., Comment: Accepted for publication in A&A, abstract abridged
Published: 2019
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15. Connecting young star clusters to CO molecular gas in NGC 7793 with ALMA-LEGUS

Author: Grasha, K, Calzetti, D, Bittle, L, Johnson, K, Donovan Meyer, J, Kennicutt, R, Elmegreen, B, Adamo, A, Krumholz, M, Fumagalli, M, Grebel, E, Gouliermis, D, Cook, D, Gallagher, J, Aloisi, A, Dale, D, Linden, S, Sacchi, E, Thilker, D, Walterbos, R, Messa, M, Wofford, A, Smith, L, Grasha K., Calzetti D., Bittle L., Johnson K. E., Donovan Meyer J., Kennicutt R. C., Elmegreen B. G., Adamo A., Krumholz M. R., Fumagalli M., Grebel E. K., Gouliermis D. A., Cook D. O., Gallagher J. S., Aloisi A., Dale D. A., Linden S., Sacchi E., Thilker D. A., Walterbos R. A. M., Messa M., Wofford A., Smith L. J., Grasha, K, Calzetti, D, Bittle, L, Johnson, K, Donovan Meyer, J, Kennicutt, R, Elmegreen, B, Adamo, A, Krumholz, M, Fumagalli, M, Grebel, E, Gouliermis, D, Cook, D, Gallagher, J, Aloisi, A, Dale, D, Linden, S, Sacchi, E, Thilker, D, Walterbos, R, Messa, M, Wofford, A, Smith, L, Grasha K., Calzetti D., Bittle L., Johnson K. E., Donovan Meyer J., Kennicutt R. C., Elmegreen B. G., Adamo A., Krumholz M. R., Fumagalli M., Grebel E. K., Gouliermis D. A., Cook D. O., Gallagher J. S., Aloisi A., Dale D. A., Linden S., Sacchi E., Thilker D. A., Walterbos R. A. M., Messa M., Wofford A., and Smith L. J.
Abstract: We present an investigation of the relationship between giant molecular cloud (GMC) properties and the associated stellar clusters in the nearby flocculent galaxy NGC 7793.We combine the star cluster catalogue from the HST LEGUS (Legacy ExtraGalactic UV Survey) programme with the 15 pc resolution ALMA CO(2-1) observations. We find a strong spatial correlation between young star clusters and GMCs such that all clusters still associated with a GMC are younger than 11 Myr and display a median age of 2 Myr. The age distribution increases gradually as the cluster-GMC distance increases, with star clusters that are spatially unassociated with molecular gas exhibiting a median age of 7Myr. Thus, star clusters are able to emerge from their natal clouds long before the time-scale required for clouds to disperse. To investigate if the hierarchy observed in the stellar components is inherited from the GMCs, we quantify the amount of clustering in the spatial distributions of the components and find that the star clusters have a fractal dimension slope of -0.35 ± 0.03, significantly more clustered than the molecular cloud hierarchy with slope of -0.18 ± 0.04 over the range 40-800 pc. We find, however, that the spatial clustering becomes comparable in strength for GMCs and star clusters with slopes of -0.44 ± 0.03 and -0.45 ± 0.06, respectively, when we compare massive (> 105 M⊙) GMCs to massive and young star clusters. This shows that massive star clusters trace the same hierarchy as their parent GMCs, under the assumption that the star formation efficiency is a few per cent.
Published: 2018

16. Connecting young star clusters to CO molecular gas in NGC 7793 with ALMA-LEGUS

Author: Alessandra Aloisi, D. Calzetti, Rene A. M. Walterbos, Linda J. Smith, Bruce G. Elmegreen, Aida Wofford, John S. Gallagher, David A. Thilker, Daniel A. Dale, David O. Cook, Eva K. Grebel, Robert C. Kennicutt, Matteo Messa, K. E. Johnson, Angela Adamo, Dimitrios A. Gouliermis, Mark R. Krumholz, Elena Sacchi, Kathryn Grasha, Michele Fumagalli, J. Donovan Meyer, Lauren Bittle, Sean T. Linden, Kennicutt, Robert [0000-0001-5448-1821], Apollo - University of Cambridge Repository, Grasha, K, Calzetti, D, Bittle, L, Johnson, K, Donovan Meyer, J, Kennicutt, R, Elmegreen, B, Adamo, A, Krumholz, M, Fumagalli, M, Grebel, E, Gouliermis, D, Cook, D, Gallagher, J, Aloisi, A, Dale, D, Linden, S, Sacchi, E, Thilker, D, Walterbos, R, Messa, M, Wofford, A, and Smith, L
Subjects: ISM: structure, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, ISM: clouds, ISM: cloud, Young star, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, 010308 nuclear & particles physics, Star formation, Molecular cloud, galaxies: individual: NGC 7793, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Galaxy, Star cluster, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), galaxies: star clusters: general, Spatial clustering, galaxies: stellar content, galaxies: structure, Age distribution, Astrophysics::Earth and Planetary Astrophysics
Abstract: We present an investigation of the relationship between giant molecular cloud (GMC) properties and the associated stellar clusters in the nearby flocculent galaxy NGC 7793. We combine the star cluster catalog from the HST LEGUS (Legacy ExtraGalactic UV Survey) program with the 15 parsec resolution ALMA CO(2-1) observations. We find a strong spatial correlation between young star clusters and GMCs such that all clusters still associated with a GMC are younger than 11 Myr and display a median age of 2 Myr. The age distribution increases gradually as the cluster-GMC distance increases, with star clusters that are spatially unassociated with molecular gas exhibiting a median age of 7 Myr. Thus, star clusters are able to emerge from their natal clouds long before the timescale required for clouds to disperse. To investigate if the hierarchy observed in the stellar components is inherited from the GMCs, we quantify the amount of clustering in the spatial distributions of the components and find that the star clusters have a fractal dimension slope of $-0.35 \pm 0.03$, significantly more clustered than the molecular cloud hierarchy with slope of $-0.18 \pm 0.04$ over the range 40-800 pc. We find, however, that the spatial clustering becomes comparable in strength for GMCs and star clusters with slopes of $-0.44\pm0.03$ and $-0.45\pm0.06$ respectively, when we compare massive ($>$10$^5$ M$_{\odot}$) GMCs to massive and young star clusters. This shows that massive star clusters trace the same hierarchy as their parent GMCs, under the assumption that the star formation efficiency is a few percent., 12 page, 8 figures. Accepted for publication in MNRAS
Published: 2018

17. XMM-Newton observation of the supernova remnant Kes 78 (G32.8-0.1): Evidence for shock-cloud interaction

Author: Samar Safi-Harb, Aya Bamba, Marco Miceli, Ping Zhou, Yi Chen, Salvatore Orlando, Fabrizio Bocchino, ITA, CAN, TWN, JPN, Miceli, M., Bamba, A., Orlando, S., Zhou, P., Safi-Harb, S., Chen, Y., Bocchino, F., and High Energy Astrophys. & Astropart. Phys (API, FNWI)
Subjects: 010504 meteorology & atmospheric sciences, Astrophysics::High Energy Astrophysical Phenomena, Hadron, Synchrotron radiation, FOS: Physical sciences, Electron, Astrophysics, ISM: individual objects: Kes 78, 01 natural sciences, Spectral line, law.invention, law, ISM: cloud, 0103 physical sciences, Supernova remnant, 010303 astronomy & astrophysics, ISM: supernova remnant, Astrophysics::Galaxy Astrophysics, 0105 earth and related environmental sciences, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Molecular cloud, Astronomy and Astrophysics, Plasma, Astronomy and Astrophysic, Acceleration of particle, Synchrotron, X-rays: ISM, 13. Climate action, Space and Planetary Science, Astrophysics - High Energy Astrophysical Phenomena
Abstract: The Galactic supernova remnant Kes 78 is surrounded by dense molecular clouds, whose projected position overlaps with the extended HESS gamma-ray source HESS J1852-000. The X-ray emission from the remnant has been recently revealed by Suzaku observations, which have shown indications for a hard X-ray component in the spectra, possibly associated with synchrotron radiation. We aim at describing the spatial distribution of the physical properties of the X-ray emitting plasma and at revealing the effects of the interaction of the remnant with the inhomogeneous ambient medium. We also aim at investigating the origin of the gamma-ray emission, which may be Inverse Compton radiation associated with X-ray synchrotron emitting electrons or hadronic emission originating from the impact of high energy protons on the nearby clouds. We analyzed an XMM-Newton EPIC observation of Kes 78 by performing image analysis and spatially resolved spectral analysis on a set of three regions. We tested our findings against the observations of the 12CO and 13CO emission in the environment of the remnant. We revealed the complex X-ray morphology of Kes 78 and found variations of the spectral properties of the plasma, with significantly denser and cooler material at the eastern edge of the remnant, which we interpret as a signature of interaction with a molecular cloud. We also exclude the presence of narrow filaments emitting X-ray synchrotron radiation. Assuming that the very high energy gamma-ray emission is associated with Kes 78, the lack of synchrotron emission rules out a leptonic origin. A hadronic origin is further supported by evidence for interaction of the remnant with a dense molecular cloud in its eastern limb., Accepted for publication in A&A
Published: 2016

18. Modeling the shock-cloud interaction in SN 1006: unveiling the origin of nonthermal X-ray and gamma-ray emission

Author: Fabio Reale, Frank P. Winkler, Fabio Acero, Marco Miceli, Anne Decourchelle, Rosaria Bonito, Jiang-Tao Li, Satoru Katsuda, Victor Pereira, Salvatore Orlando, Gloria Mabel Dubner, Giovanni Peres, Miceli, M., Orlando, S., Pereira, V., Acero, F., Katsuda, S., Decourchelle, A., Winkler, F., Bonito, R., Reale, F., Peres, G., Li, J., Dubner, G., Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), ITA, USA, FRA, ESP, ARG, JPN, Laboratoire AIM, Université Paris Diderot - Paris 7 ( UPD7 ) -Centre d'Etudes de Saclay, Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), and Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112))
Subjects: Astrofísica, Proper motion, Magnetohydrodynamics (MHD), [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Astrophysics::High Energy Astrophysical Phenomena, Hadron, FOS: Physical sciences, Context (language use), Astrophysics, ISM: individual objects: SN 1006, 01 natural sciences, ISM: clouds, law.invention, Settore FIS/05 - Astronomia E Astrofisica, law, ISM: cloud, 0103 physical sciences, Magnetohydrodynamic drive, Supernova remnant, 010303 astronomy & astrophysics, ISM: supernova remnant, Astrophysics::Galaxy Astrophysics, acceleration of particles, ISM: supernova remnants, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), 010308 nuclear & particles physics, clouds, X-rays: ISM, Astronomy and Astrophysics, Space and Planetary Science [Acceleration of particles, ISM], X-ray, Astronomy and Astrophysic, Acceleration of particle, Synchrotron, Shock (mechanics), Astronomía, 13. Climate action, Space and Planetary Science, Astrophysics - High Energy Astrophysical Phenomena, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract: The supernova remnant SN 1006 is a source of high-energy particles and its southwestern limb is interacting with a dense ambient cloud, thus being a promising region for gamma-ray hadronic emission. We aim at describing the physics and the nonthermal emission associated with the shock-cloud interaction to derive the physical parameters of the cloud (poorly constrained by the data analysis), to ascertain the origin of the observed spatial variations in the spectral properties of the X-ray synchrotron emission, and to predict spectral and morphological features of the resulting gamma-ray emission. We performed 3-D magnetohydrodynamic simulations modeling the evolution of SN 1006 and its interaction with the ambient cloud, and explored different model setups. By applying the REMLIGHT code on the model results, we synthesized the synchrotron X-ray emission, and compared it with actual observations, to constrain the parameters of the model. We also synthesized the leptonic and hadronic gamma-ray emission from the models, deriving constraints on the energy content of the hadrons accelerated at the southwestern limb. We found that the impact of the SN 1006 shock front with a uniform cloud with density 0.5 cm^-3 can explain the observed morphology, the azimuthal variations of the cutoff frequency of the X-ray synchrotron emission, and the shock proper motion in the interaction region. Our results show that the current upper limit for the total hadronic energy in the southwestern limb is 2.5e49 erg., Comment: Accepted for publication in A&A
Published: 2016

19. Planck 2015 results. XXVIII. The Planck Catalogue of Galactic Cold Clumps

Author: Planck Collaboration, Ade, P. A. R., Aghanim, N., Arnaud, M., Ashdown, M., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Bartolo, N., Battaner, E., Benabed, K., Benoît, A., Benoit-Lévy, A., Bernard, J. -P, Bersanelli, M., Bielewicz, P., Bonaldi, A., Bonavera, L., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Bucher, M., Burigana, C., Butler, R. C., Calabrese, E., Catalano, A., Chamballu, A., Chiang, H. C., Christensen, P. R., Clements, D. L., Colombi, S., Colombo, L. P. L., Combet, C., Couchot, F., Coulais, A., Crill, B. P., Curto, A., Cuttaia, F., Danese, L., Davies, R. D., Davis, R. J., Bernardis, P., Rosa, A., Zotti, G., Delabrouille, J., Désert, F. -X, Dickinson, C., Diego, J. M., Dole, H., Donzelli, S., Doré, O., Douspis, M., Ducout, A., Dupac, X., Efstathiou, G., Elsner, F., Enßlin, T. A., Eriksen, H. K., Falgarone, E., Fergusson, J., Finelli, F., Forni, O., Frailis, M., Fraisse, A. A., Franceschi, E., Frejsel, A., Galeotta, S., Galli, S., Ganga, K., Giard, M., Giraud-Héraud, Y., Gjerløw, E., González-Nuevo, J., Górski, K. M., Gratton, S., Gregorio, A., Gruppuso, A., Gudmundsson, J. E., Hansen, F. K., Hanson, D., Harrison, D. L., Helou, G., Henrot-Versillé, S., Hernández-Monteagudo, C., Herranz, D., Hildebrandt, S. R., Hivon, E., Hobson, M., Holmes, W. A., Hornstrup, A., Hovest, W., Huffenberger, K. M., Hurier, G., Jaffe, A. H., Jaffe, T. R., Jones, W. C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T. S., Knoche, J., Kunz, M., Kurki-Suonio, H., Lagache, G., Lamarre, J. -M, Lasenby, A., Lattanzi, M., Lawrence, C. R., Leonardi, R., Lesgourgues, J., Levrier, F., Liguori, M., Lilje, P. B., Linden-Vørnle, M., López-Caniego, M., Lubin, P. M., Macías-Pérez, J. F., Maggio, G., Maino, D., Mandolesi, N., Mangilli, A., Marshall, D. J., Martin, P. G., Martínez-González, E., Masi, S., Matarrese, S., Mazzotta, P., Mcgehee, P., Melchiorri, A., Mendes, L., Mennella, A., Migliaccio, M., Mitra, S., Miville-Deschênes, M. -A, Moneti, A., Montier, L., Morgante, G., Mortlock, D., Moss, A., Munshi, D., Murphy, J. A., Naselsky, P., Nati, F., Natoli, P., Netterfield, C. B., Nørgaard-Nielsen, H. U., Noviello, F., Novikov, D., Novikov, I., Oxborrow, C. A., Paci, F., Pagano, L., Pajot, F., Paladini, R., Paoletti, D., Pasian, F., Patanchon, G., Pearson, T. J., Pelkonen, V. -M, Perdereau, O., Perotto, L., Perrotta, F., Pettorino, V., Piacentini, F., Piat, M., Pierpaoli, E., Pietrobon, D., Plaszczynski, S., Pointecouteau, E., Gianluca Polenta, Pratt, G. W., Prézeau, G., Prunet, S., Puget, J. -L, Rachen, J. P., Reach, W. T., Rebolo, R., Reinecke, M., Remazeilles, M., Renault, C., Renzi, A., Ristorcelli, I., Rocha, G., Rosset, C., Rossetti, M., Roudier, G., Rubiño-Martín, J. A., Rusholme, B., Sandri, M., Santos, D., Savelainen, M., Savini, G., Scott, D., Seiffert, M. D., Shellard, E. P. S., Spencer, L. D., Stolyarov, V., Sudiwala, R., Sunyaev, R., Sutton, D., Suur-Uski, A. -S, Sygnet, J. -F, Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., Tuovinen, J., Umana, G., Valenziano, L., Valiviita, J., Tent, B., Vielva, P., Villa, F., Wade, L. A., Wandelt, B. D., Wehus, I. K., Yvon, D., Zacchei, A., Zonca, A., Hélium : du fondamental aux applications (HELFA), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Planck, Ade, P, Aghanim, N, Arnaud, M, Ashdown, M, Aumont, J, Baccigalupi, C, Banday, A, Barreiro, R, Bartolo, N, Battaner, E, Benabed, K, Benoît, A, Benoit Lévy, A, Bernard, J, Bersanelli, M, Bielewicz, P, Bonaldi, A, Bonavera, L, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Bucher, M, Burigana, C, Butler, R, Calabrese, E, Catalano, A, Chamballu, A, Chiang, H, Christensen, P, Clements, D, Colombi, S, Colombo, L, Combet, C, Couchot, F, Coulais, A, Crill, B, Curto, A, Cuttaia, F, Danese, L, Davies, R, Davis, R, DE BERNARDIS, P, De Rosa, A, De Zotti, G, Delabrouille, J, Désert, F, Dickinson, C, Diego, J, Dole, H, Donzelli, S, Doré, O, Douspis, M, Ducout, A, Dupac, X, Efstathiou, G, Elsner, F, Enßlin, T, Eriksen, H, Falgarone, E, Fergusson, J, Finelli, F, Forni, O, Frailis, M, Fraisse, A, Franceschi, E, Frejsel, A, Galeotta, S, Galli, S, Ganga, K, Giard, M, Giraud Héraud, Y, Gjerløw, E, González Nuevo, J, Górski, K, Gratton, S, Gregorio, A, Gruppuso, A, Gudmundsson, J, Hansen, F, Hanson, D, Harrison, D, Helou, G, Henrot Versillé, S, Hernández Monteagudo, C, Herranz, D, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hornstrup, A, Hovest, W, Huffenberger, K, Hurier, G, Jaffe, A, Jaffe, T, Jones, W, Juvela, M, Keihänen, E, Keskitalo, R, Kisner, T, Knoche, J, Kunz, M, Kurki Suonio, H, Lagache, G, Lamarre, J, Lasenby, A, Lattanzi, M, Lawrence, C, Leonardi, R, Lesgourgues, J, Levrier, F, Liguori, M, Lilje, P, Linden Vørnle, M, López Caniego, M, Lubin, P, Macías Pérez, J, Maggio, G, Maino, D, Mandolesi, N, Mangilli, A, Marshall, D, Martin, P, Martínez González, E, Masi, S, Matarrese, S, Mazzotta, P, Mcgehee, P, Melchiorri, A, Mendes, L, Mennella, A, Migliaccio, M, Mitra, S, Miville Deschênes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Moss, A, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Natoli, P, Netterfield, C, Nørgaard Nielsen, H, Noviello, F, Novikov, D, Novikov, I, Oxborrow, C, Paci, F, Pagano, L, Pajot, F, Paladini, R, Paoletti, D, Pasian, F, Patanchon, G, Pearson, T, Pelkonen, V, Perdereau, O, Perotto, L, Perrotta, F, Pettorino, V, Piacentini, F, Piat, M, Pierpaoli, E, Pietrobon, D, Plaszczynski, S, Pointecouteau, E, Polenta, G, Pratt, G, Prézeau, G, Prunet, S, Puget, J, Rachen, J, Reach, W, Rebolo, R, Reinecke, M, Remazeilles, M, Renault, C, Renzi, A, Ristorcelli, I, Rocha, G, Rosset, C, Rossetti, M, Roudier, G, Rubiño Martín, J, Rusholme, B, Sandri, M, Santos, D, Savelainen, M, Savini, G, Scott, D, Seiffert, M, Shellard, E, Spencer, L, Stolyarov, V, Sudiwala, R, Sunyaev, R, Sutton, D, Suur Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Tucci, M, Tuovinen, J, Umana, G, Valenziano, L, Valiviita, J, Van Tent, B, Vielva, P, Villa, F, Wade, L, Wandelt, B, Wehus, I, Yvon, D, Zacchei, A, Zonca, A, Hélium : du fondamental aux applications (NEEL - HELFA), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique d'Orsay [Orsay] (LPT), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Science and Technology Facilities Council (STFC), Imperial College Trust, Ade, P. A. R., Aghanim, N., Arnaud, M., Ashdown, M., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Bartolo, N., Battaner, E., Benabed, K., Benoît, A., Benoit Lévy, A., Bernard, J. P., Bersanelli, M., Bielewicz, P., Bonaldi, A., Bonavera, L., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Bucher, M., Burigana, C., Butler, R. C., Calabrese, E., Catalano, A., Chamballu, A., Chiang, H. C., Christensen, P. R., Clements, D. L., Colombi, S., Colombo, L. P. L., Combet, C., Couchot, F., Coulais, A., Crill, B. P., Curto, A., Cuttaia, F., Danese, L., Davies, R. D., Davis, R. J., De Bernardis, P., De Rosa, A., De Zotti, G., Delabrouille, J., Désert, F. X., Dickinson, C., Diego, J. M., Dole, H., Donzelli, Simona, Doré, O., Douspis, M., Ducout, A., Dupac, X., Efstathiou, G., Elsner, F., Enßlin, T. A., Eriksen, H. K., Falgarone, E., Fergusson, J., Finelli, F., Forni, O., Frailis, M., Fraisse, A. A., Franceschi, E., Frejsel, A., Galeotta, S., Galli, S., Ganga, K., Giard, M., Giraud Héraud, Y., Gjerløw, E., González Nuevo, J., Górski, K. M., Gratton, S., Gregorio, Anna, Gruppuso, A., Gudmundsson, J. E., Hansen, F. K., Hanson, D., Harrison, D. L., Helou, G., Henrot Versillé, S., Hernández Monteagudo, C., Herranz, D., Hildebrandt, S. R., Hivon, E., Hobson, M., Holmes, W. A., Hornstrup, A., Hovest, W., Huffenberger, K. M., Hurier, G., Jaffe, A. H., Jaffe, T. R., Jones, W. C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T. S., Knoche, J., Kunz, M., Kurki Suonio, H., Lagache, G., Lamarre, J. M., Lasenby, A., Lattanzi, M., Lawrence, C. R., Leonardi, R., Lesgourgues, J., Levrier, F., Liguori, M., Lilje, P. B., Linden Vørnle, M., López Caniego, M., Lubin, P. M., Macías Pérez, J. F., Maggio, G., Maino, D., Mandolesi, N., Mangilli, A., Marshall, D. J., Martin, P. G., Martínez González, E., Masi, S., Matarrese, S., Mazzotta, P., Mcgehee, P., Melchiorri, A., Mendes, L., Mennella, A., Migliaccio, M., Mitra, S., Miville Deschênes, M. A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Moss, A., Munshi, D., Murphy, J. A., Naselsky, P., Nati, F., Natoli, P., Netterfield, C. B., Nørgaard Nielsen, H. U., Noviello, F., Novikov, D., Novikov, I., Oxborrow, C. A., Paci, F., Pagano, L., Pajot, F., Paladini, R., Paoletti, D., Pasian, F., Patanchon, G., Pearson, T. J., Pelkonen, V. M., Perdereau, O., Perotto, L., Perrotta, F., Pettorino, V., Piacentini, F., Piat, M., Pierpaoli, E., Pietrobon, D., Plaszczynski, S., Pointecouteau, E., Polenta, G., Pratt, G. W., Prézeau, G., Prunet, S., Puget, J. L., Rachen, J. P., Reach, W. T., Rebolo, R., Reinecke, M., Remazeilles, M., Renault, C., Renzi, A., Ristorcelli, I., Rocha, G., Rosset, C., Rossetti, M., Roudier, G., Rubiño Martín, J. A., Rusholme, B., Sandri, M., Santos, D., Savelainen, M., Savini, G., Scott, D., Seiffert, M. D., Shellard, E. P. S., Spencer, L. D., Stolyarov, V., Sudiwala, R., Sunyaev, R., Sutton, D., Suur Uski, A. S., Sygnet, J. F., Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., Tuovinen, J., Umana, G., Valenziano, L., Valiviita, J., Van Tent, B., Vielva, P., Villa, F., Wade, L. A., Wandelt, B. D., Wehus, I. K., Yvon, D., Zacchei, A., and Zonca, A.
Subjects: 010504 meteorology & atmospheric sciences, Astronomy, cloud [ISM], Astrophysics, 01 natural sciences, ISM: clouds, Luminosity, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), 010303 astronomy & astrophysics, formation [Stars], media_common, Physics, Astrophysics::Instrumentation and Methods for Astrophysics, Planck temperature, ISM: structure, local insterstellar matter, stars: formation, Astronomy and Astrophysics, Space and Planetary Science, symbols, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], clouds [ISM], astro-ph.GA, media_common.quotation_subject, Local insterstellar matter, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astronomy & Astrophysics, Spatial distribution, Latitude, NO, symbols.namesake, Settore FIS/05 - Astronomia e Astrofisica, ISM: cloud, 0103 physical sciences, Planck, Astrophysics::Galaxy Astrophysics, 0105 earth and related environmental sciences, Molecular cloud, Galactic plane, Astronomy and Astrophysic, Astrophysics - Astrophysics of Galaxies, 0201 Astronomical And Space Sciences, [PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], 13. Climate action, Sky, Astrophysics of Galaxies (astro-ph.GA), structure [ISM]
Abstract: CSIC, Consejo Superior de Investigaciones Científicas; ERC, European Research Council; MINECO, Ministerio de Economía y Competitividad; MPG, Max-Planck-Gesellschaft; NASA, National Aeronautics and Space Administration; etc., Ade, P.A.R., Aghanim, N., Arnaud, M., Ashdown, M., Aumont, J., Baccigalupi, C., Banday, A.J., Barreiro, R.B., Bartolo, N., Battaner, E., Benabed, K., Benoît, A., Benoit-Lévy, A., Bernard, J.-P., Bersanelli, M., Bielewicz, P., Bonaldi, A., Bonavera, L., Bond, J.R., Borrill, J., Bouchet, F.R., Boulanger, F., Bucher, M., Burigana, C., Butler, R.C., Calabrese, E., Catalano, A., Chamballu, A., Chiang, H.C., Christensen, P.R., Clements, D.L., Colombi, S., Colombo, L.P.L., Combet, C., Couchot, F., Coulais, A., Crill, B.P., Curto, A., Cuttaia, F., Danese, L., Davies, R.D., Davis, R.J., De Bernardis, P., De Rosa, A., De Zotti, G., Delabrouille, J., Désert, F.-X., Dickinson, C., Diego, J.M., Dole, H., Donzelli, S., Doré, O., Douspis, M., Ducout, A., Dupac, X., Efstathiou, G., Elsner, F., Enßlin, T.A., Eriksen, H.K., Falgarone, E., Fergusson, J., Finelli, F., Forni, O., Frailis, M., Fraisse, A.A., Franceschi, E., Frejsel, A., Galeotta, S., Galli, S., Ganga, K., Giard, M., Giraud-Héraud, Y., Gjerløw, E., González-Nuevo, J., Górski, K.M., Gratton, S., Gregorio, A., Gruppuso, A., Gudmundsson, J.E., Hansen, F.K., Hanson, D., Harrison, D.L., Helou, G., Henrot-Versillé, S., Hernández-Monteagudo, C., Herranz, D., Hildebrandt, S.R., Hivon, E., Hobson, M., Holmes, W.A., Hornstrup, A., Hovest, W., Huffenberger, K.M., Hurier, G., Jaffe, A.H., Jaffe, T.R., Jones, W.C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T.S., Knoche, J., Kunz, M., Kurki-Suonio, H., Lagache, G., Lamarre, J.-M., Lasenby, A., Lattanzi, M., Lawrence, C.R., Leonardi, R., Lesgourgues, J., Levrier, F., Liguori, M., Lilje, P.B., Linden-Vørnle, M., López-Caniego, M., Lubin, P.M., Macías-Pérez, J.F., Maggio, G., Maino, D., Mandolesi, N., Mangilli, A., Marshall, D.J., Martin, P.G., Martínez-González, E., Masi, S., Matarrese, S., Mazzotta, P., McGehee, P., Melchiorri, A., Mendes, L., Mennella, A., Migliaccio, M., Mitra, S., Miville-Deschênes, M.-A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Moss, A., Munshi, D., Murphy, J.A., Naselsky, P., Nati, F., Natoli, P., Netterfield, C.B., Nørgaard-Nielsen, H.U., Noviello, F., Novikov, D., Novikov, I., Oxborrow, C.A., Paci, F., Pagano, L., Pajot, F., Paladini, R., Paoletti, D., Pasian, F., Patanchon, G., Pearson, T.J., Pelkonen, V.-M., Perdereau, O., Perotto, L., Perrotta, F., Pettorino, V., Piacentini, F., Piat, M., Pierpaoli, E., Pietrobon, D., Plaszczynski, S., Pointecouteau, E., Polenta, G., Pratt, G.W., Prézeau, G., Prunet, S., Puget, J.-L., Rachen, J.P., Reach, W.T., Rebolo, R., Reinecke, M., Remazeilles, M., Renault, C., Renzi, A., Ristorcelli, I., Rocha, G., Rosset, C., Rossetti, M., Roudier, G., Rubiño-Martín, J.A., Rusholme, B., Sandri, M., Santos, D., Savelainen, M., Savini, G., Scott, D., Seiffert, M.D., Shellard, E.P.S., Spencer, L.D., Stolyarov, V., Sudiwala, R., Sunyaev, R., Sutton, D., Suur-Uski, A.-S., Sygnet, J.-F., Tauber, J.A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., Tuovinen, J., Umana, G., Valenziano, L., Valiviita, J., Van Tent, B., Vielva, P., Villa, F., Wade, L.A., Wandelt, B.D., Wehus, I.K., Yvon, D., Zacchei, A., Zonca, A.
Published: 2016

20. Planck intermediate results: XXXV. Probing the role of the magnetic field in the formation of structure in molecular clouds

Author: Ade, P. A. R., Aghanim, N., Alves, M. I. R., Arnaud, M., Arzoumanian, D., Ashdown, M., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Bartolo, N., Battaner, E., Benabed, K., Benoît, A., Benoit-Lévy, A., Bernard, J.-P., Bersanelli, M., Bielewicz, P., Bock, J. J., Bonavera, L., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Bracco, A., Burigana, C., Calabrese, E., Cardoso, J.-F., Catalano, A., Chiang, H. C., Christensen, P. R., Colombo, L. P. L., Combet, C., Couchot, F., Crill, B. P., Curto, A., Cuttaia, F., Danese, L., Davies, R. D., Davis, R. J., De Bernardis, P., De Rosa, A., De Zotti, G., Delabrouille, J., Dickinson, C., Diego, J. M., Dole, H., Donzelli, S., Doré, O., Douspis, M., Ducout, A., Dupac, X., Efstathiou, G., Elsner, F., Enßlin, T. A., Eriksen, H. K., Falceta-Gonçalves, D., Falgarone, E., Ferrière, K., Finelli, F., Forni, O., Frailis, M., Fraisse, A., Franceschi, E., Frejsel, A., Galeotta, S., Galli, S., Ganga, K., Ghosh, T., Giard, M., Gjerløw, E., González-Nuevo, J., Górski, K. M., Gregorio, A., Gruppuso, A., Gudmundsson, J. E., Guillet, V., Harrison, D. L., Helou, G., Hennebelle, P., Henrot-Versille, S., Hernández-Monteagudo, C., Herranz, D., Hildebrandt, S. R., Hivon, E., Holmes, W. A., Hornstrup, A., Huffenberger, K. M., Hurier, G., Jaffe, A. H., Jaffe, T. R., Jones, W. C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T. S., Knoche, J., Kunz, M., Kurki-Suonio, H., Lagache, Guilaine, Lamarre, J.-M., Lasenby, A., Lattanzi, M., Lawrence, C. R., Leonardi, R., Levrier, F., Liguori, M., Lilje, P. B., Linden-Vørnle, M., López-Caniego, M., Lubin, P. M., Macías-Pérez, J. F., Maino, D., Mandolesi, N., Mangilli, A., Maris, M., Martin, P. G., Martínez-González, E., Masi, S., Matarrese, S., Melchiorri, A., Mendes, L., Mennella, A., Migliaccio, M., Miville-Deschênes, M.-A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Munshi, D., Murphy, J. A., Naselsky, P., Nati, F., Netterfield, C. B., Noviello, F., Novikov, D., Novikov, I., Oppermann, N., Oxborrow, C. A., Pagano, L., Pajot, F., Paladini, R., Paoletti, D., Pasian, F., Perotto, L., Pettorino, V., Piacentini, F., Piat, M., Pierpaoli, E., Pietrobon, D., Plaszczynski, S., Pointecouteau, E., Polenta, G., Ponthieu, N., Pratt, G. W., Prunet, S., Puget, J.-L., Rachen, J. P., Reinecke, M., Remazeilles, M., Renault, C., Renzi, A., Ristorcelli, I., Rocha, G., Rossetti, M., Roudier, G., Rubiño-Martín, J. A., Rusholme, B., Sandri, M., Santos, D., Savelainen, M., Savini, G., Scott, D., Soler, J. D., Stolyarov, V., Sudiwala, R., Sutton, D., Suur-Uski, A.-S., Sygnet, J.-F., Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., Umana, G., Valenziano, L., Valiviita, J., Van Tent, B., Vielva, P., Villa, F., Wade, L. A., Wandelt, B. D., Wehus, I. K., Ysard, N., Yvon, D., Zonca, A., Banday, J., Bouchet, R., Chiang, C., Colombo, P., Crill, P., Davies, D., Davis, J., Bernard, P., Diego, M., Enßlin, A., Eriksen, K., Górski, M., Hildebrandt, R., Holmes, A., Huffenberger, M., Jaffe, R., Jones, C., Kisner, S., Lamarre, M., Rachen, P., Soler, D., Wade, A., Wandelt, D., Wehus, K., Hélium : du fondamental aux applications (HELFA), Institut Néel (NEEL), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology [2007-2019] (Grenoble INP [2007-2019])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology [2007-2019] (Grenoble INP [2007-2019])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology [2007-2019] (Grenoble INP [2007-2019])-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), PLANCK, Scuola Internazionale Superiore di Studi Avanzati / International School for Advanced Studies (SISSA / ISAS), INO-CNR BEC Center and Dipartimento di Fisica, Università degli Studi di Trento (UNITN), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Lawrence Berkeley National Laboratory [Berkeley] (LBNL), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Istituto Nazionale di Fisica Nucleare [Milano] (INFN), Laboratoire Traitement et Communication de l'Information (LTCI), Télécom ParisTech-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Steward Observatory, University of Arizona, Laboratoire de Radioastronomie (LRA), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Laboratoire Astrophysique de Toulouse-Tarbes (LATT), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, APC - Cosmologie, Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Institut de recherche en astrophysique et planétologie (IRAP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Laboratoire Pluridisciplinaire de Recherche en Ingénierie des Systèmes, Mécanique et Energétique (PRISME), Université d'Orléans (UO)-Ecole Nationale Supérieure d'Ingénieurs de Bourges (ENSI Bourges), Spitzer Science Center, California Institute of Technology, Pasadena, California Institute of Technology (CALTECH), Laboratoire d'Astrophysique de Grenoble (LAOG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS Paris)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), Cavendish Laboratory, University of Cambridge [UK] (CAM), International Center for Relativistic Astrophysics (ICRA), Università degli Studi di Roma, Laboratoire de Modélisation Multi-échelles des Combustibles (LM2C), Service d'Etudes de Simulation du Comportement du combustibles (SESC), Département d'Etudes des Combustibles (DEC), CEA-Direction de l'Energie Nucléaire (CEA-DEN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CEA-Direction de l'Energie Nucléaire (CEA-DEN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Département d'Etudes des Combustibles (DEC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Dipartimento di Fisica, Università degli Studi di Roma 'La Sapienza' [Rome], Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Dipartimento di Fisica, Universita` di Roma Tor Vergata, Università degli Studi di Roma Tor Vergata [Roma], AstroParticule et Cosmologie (APC (UMR_7164)), University of Southern California (USC), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), INAF-IASF Milano, Istituto Nazionale di Astrofisica (INAF), Geophysics Centre of Évora, AUTRES, Antarctic Research a European Network for Astrophysics (ARENA), Laboratoire de Physique Théorique d'Orsay [Orsay] (LPT), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Synopsys, Universita degli Studi di Padova, Ade, P, Aghanim, N, Alves, M, Arnaud, M, Arzoumanian, D, Ashdown, M, Aumont, J, Baccigalupi, C, Banday, A, Barreiro, R, Bartolo, N, Battaner, E, Benabed, K, Benoît, A, Benoit Lévy, A, Bernard, J, Bersanelli, M, Bielewicz, P, Bock, J, Bonavera, L, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Bracco, A, Burigana, C, Calabrese, E, Cardoso, J, Catalano, A, Chiang, H, Christensen, P, Colombo, L, Combet, C, Couchot, F, Crill, B, Curto, A, Cuttaia, F, Danese, L, Davies, R, Davis, R, De Bernardis, P, De Rosa, A, De Zotti, G, Delabrouille, J, Dickinson, C, Diego, J, Dole, H, Donzelli, S, Doré, O, Douspis, M, Ducout, A, Dupac, X, Efstathiou, G, Elsner, F, Enßlin, T, Eriksen, H, Falceta Gonçalves, D, Falgarone, E, Ferrière, K, Finelli, F, Forni, O, Frailis, M, Fraisse, A, Franceschi, E, Frejsel, A, Galeotta, S, Galli, S, Ganga, K, Ghosh, T, Giard, M, Gjerløw, E, González Nuevo, J, Górski, K, Gregorio, A, Gruppuso, A, Gudmundsson, J, Guillet, V, Harrison, D, Helou, G, Hennebelle, P, Henrot Versillé, S, Hernández Monteagudo, C, Herranz, D, Hildebrandt, S, Hivon, E, Holmes, W, Hornstrup, A, Huffenberger, K, Hurier, G, Jaffe, A, Jaffe, T, Jones, W, Juvela, M, Keihänen, E, Keskitalo, R, Kisner, T, Knoche, J, Kunz, M, Kurki Suonio, H, Lagache, G, Lamarre, J, Lasenby, A, Lattanzi, M, Lawrence, C, Leonardi, R, Levrier, F, Liguori, M, Lilje, P, Linden Vørnle, M, López Caniego, M, Lubin, P, Macías Pérez, J, Maino, D, Mandolesi, N, Mangilli, A, Maris, M, Martin, P, Martínez González, E, Masi, S, Matarrese, S, Melchiorri, A, Mendes, L, Mennella, A, Migliaccio, M, Miville Deschênes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Netterfield, C, Noviello, F, Novikov, D, Novikov, I, Oppermann, N, Oxborrow, C, Pagano, L, Pajot, F, Paladini, R, Paoletti, D, Pasian, F, Perotto, L, Pettorino, V, Piacentini, F, Piat, M, Pierpaoli, E, Pietrobon, D, Plaszczynski, S, Pointecouteau, E, Polenta, G, Ponthieu, N, Pratt, G, Prunet, S, Puget, J, Rachen, J, Reinecke, M, Remazeilles, M, Renault, C, Renzi, A, Ristorcelli, I, Rocha, G, Rossetti, M, Roudier, G, Rubiño Martín, J, Rusholme, B, Sandri, M, Santos, D, Savelainen, M, Savini, G, Scott, D, Soler, J, Stolyarov, V, Sudiwala, R, Sutton, D, Suur Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Tucci, M, Umana, G, Valenziano, L, Valiviita, J, Van Tent, B, Vielva, P, Villa, F, Wade, L, Wandelt, B, Wehus, I, Ysard, N, Yvon, D, Zonca, A, Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Istituto Nazionale di Fisica Nucleare, Sezione di Milano (INFN), Istituto Nazionale di Fisica Nucleare (INFN), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Ade, P. A. R., Aghanim, N., Alves, M. I. R., Arnaud, M., Arzoumanian, D., Ashdown, M., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Bartolo, N., Battaner, E., Benabed, K., Benoît, A., Benoit Lévy, A., Bernard, J. P., Bersanelli, M., Bielewicz, P., Bock, J. J., Bonavera, L., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Bracco, A., Burigana, C., Calabrese, E., Cardoso, J. F., Catalano, A., Chiang, H. C., Christensen, P. R., Colombo, L. P. L., Combet, C., Couchot, F., Crill, B. P., Curto, A., Cuttaia, F., Danese, L., Davies, R. D., Davis, R. J., De Bernardis, P., De Rosa, A., De Zotti, G., Delabrouille, J., Dickinson, C., Diego, J. M., Dole, H., Donzelli, S., Doré, O., Douspis, M., Ducout, A., Dupac, X., Efstathiou, G., Elsner, F., Enßlin, T. A., Eriksen, H. K., Falceta Gonçalves, D., Falgarone, E., Ferrière, K., Finelli, F., Forni, O., Frailis, M., Fraisse, A. A., Franceschi, E., Frejsel, A., Galeotta, S., Galli, S., Ganga, K., Ghosh, T., Giard, M., Gjerløw, E., González Nuevo, J., Górski, K. M., Gregorio, Anna, Gruppuso, A., Gudmundsson, J. E., Guillet, V., Harrison, D. L., Helou, G., Hennebelle, P., Henrot Versillé, S., Hernández Monteagudo, C., Herranz, D., Hildebrandt, S. R., Hivon, E., Holmes, W. A., Hornstrup, A., Huffenberger, K. M., Hurier, G., Jaffe, A. H., Jaffe, T. R., Jones, W. C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T. S., Knoche, J., Kunz, M., Kurki Suonio, H., Lagache, G., Lamarre, J. M., Lasenby, A., Lattanzi, M., Lawrence, C. R., Leonardi, R., Levrier, F., Liguori, M., Lilje, P. B., Linden Vørnle, M., López Caniego, M., Lubin, P. M., Macías Pérez, J. F., Maino, D., Mandolesi, N., Mangilli, A., Maris, M., Martin, P. G., Martínez González, E., Masi, S., Matarrese, S., Melchiorri, A., Mendes, L., Mennella, A., Migliaccio, M., Miville Deschênes, M. A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Munshi, D., Murphy, J. A., Naselsky, P., Nati, F., Netterfield, C. B., Noviello, F., Novikov, D., Novikov, I., Oppermann, N., Oxborrow, C. A., Pagano, L., Pajot, F., Paladini, R., Paoletti, D., Pasian, F., Perotto, L., Pettorino, V., Piacentini, F., Piat, M., Pierpaoli, E., Pietrobon, D., Plaszczynski, S., Pointecouteau, E., Polenta, G., Ponthieu, N., Pratt, G. W., Prunet, S., Puget, J. L., Rachen, J. P., Reinecke, M., Remazeilles, M., Renault, C., Renzi, A., Ristorcelli, I., Rocha, G., Rossetti, M., Roudier, G., Rubiño Martín, J. A., Rusholme, B., Sandri, M., Santos, D., Savelainen, M., Savini, G., Scott, D., Soler, Juan D, Stolyarov, V., Sudiwala, R., Sutton, D., Suur Uski, A. S., Sygnet, J. F., Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., Umana, G., Valenziano, L., Valiviita, J., Van Tent, B., Vielva, P., Villa, F., Wade, L. A., Wandelt, B. D., Wehus, I. K., Ysard, N., Yvon, D., Zonca, A., Science and Technology Facilities Council (STFC), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Hélium : du fondamental aux applications (NEEL - HELFA), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), European Research Council, and European Commission
Subjects: SOLAR NEIGHBORHOOD, magnetic field [ISM], Astronomy, cloud [ISM], Astrophysics, IMAGING POLARIMETRY, 01 natural sciences, ISM: clouds, INTERSTELLAR CLOUDS, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, media_common, Physics, infrared: ISM, general [ISM], Turbulence, extinction, ISM [Submillimeter], Dust, Extinction, VELOCITY ANISOTROPY, Magnetic field, Physical Sciences, Physics::Space Physics, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, symbols, submillimeter: ISM, Astrophysics::Earth and Planetary Astrophysics, ISM: magnetic fields, dust, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], clouds [ISM], FAR-INFRARED POLARIMETRY, GRAIN ALIGNMENT, NUVENS, RADIATIVE TORQUES, Astrophysics::High Energy Astrophysical Phenomena, astro-ph.GA, media_common.quotation_subject, ISM [Infrared], FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astronomy & Astrophysics, Magnetohydrodynamic turbulence, NO, STAR-FORMATION, Dust, extinction, Infrared: ISM, ISM: general, Submillimeter: ISM, Astronomy and Astrophysics, Space and Planetary Science, symbols.namesake, ISM: magnetic field, Settore FIS/05 - Astronomia e Astrofisica, ISM: cloud, 0103 physical sciences, Planck, Astrophysics::Galaxy Astrophysics, Science & Technology, dust, extinction, 010308 nuclear & particles physics, Plane (geometry), Molecular cloud, magnetic fields [ISM], Astronomy and Astrophysic, Astrophysics - Astrophysics of Galaxies, Orientation (vector space), 0201 Astronomical And Space Sciences, NONHOMOLOGOUS CONTRACTION, [PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], 13. Climate action, Sky, [SDU]Sciences of the Universe [physics], Astrophysics of Galaxies (astro-ph.GA), ALFVENIC TURBULENCE
Abstract: Interstellar and circumstellar matter.-- et al., Within ten nearby (d < 450 pc) Gould belt molecular clouds we evaluate statistically the relative orientation between the magnetic field projected on the plane of sky, inferred from the polarized thermal emission of Galactic dust observed by Planck at 353 GHz, and the gas column density structures, quantified by the gradient of the column density, NH. The selected regions, covering several degrees in size, are analysed at an effective angular resolution of 10′ FWHM, thus sampling physical scales from 0.4 to 40 pc in the nearest cloud. The column densities in the selected regions range from NH≈ 1021 to1023 cm-2, and hence they correspond to the bulk of the molecular clouds. The relative orientation is evaluated pixel by pixel and analysed in bins of column density using the novel statistical tool called “histogram of relative orientations”. Throughout this study, we assume that the polarized emission observed by Planck at 353 GHz is representative of the projected morphology of the magnetic field in each region, i.e., we assume a constant dust grain alignment efficiency, independent of the local environment. Within most clouds we find that the relative orientation changes progressively with increasing NH, from mostly parallel or having no preferred orientation to mostly perpendicular. In simulations of magnetohydrodynamic turbulence in molecular clouds this trend in relative orientation is a signature of Alfvénic or sub-Alfvénic turbulence, implying that the magnetic field is significant for the gas dynamics at the scales probed by Planck. We compare the deduced magnetic field strength with estimates we obtain from other methods and discuss the implications of the Planck observations for the general picture of molecular cloud formation and evolution., The research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement No. 267934.
Published: 2016

21. Planck 2015 results: XXVIII. the Planck Catalogue of Galactic cold clumps

Author: Ade, P, Aghanim, N, Arnaud, M, Ashdown, M, Aumont, J, Baccigalupi, C, Banday, A, Barreiro, R, Bartolo, N, Battaner, E, Benabed, K, Benoît, A, Benoit Lévy, A, Bernard, J, Bersanelli, M, Bielewicz, P, Bonaldi, A, Bonavera, L, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Bucher, M, Burigana, C, Butler, R, Calabrese, E, Catalano, A, Chamballu, A, Chiang, H, Christensen, P, Clements, D, Colombi, S, Colombo, L, Combet, C, Couchot, F, Coulais, A, Crill, B, Curto, A, Cuttaia, F, Danese, L, Davies, R, Davis, R, DE BERNARDIS, P, De Rosa, A, De Zotti, G, Delabrouille, J, Désert, F, Dickinson, C, Diego, J, Dole, H, Donzelli, S, Doré, O, Douspis, M, Ducout, A, Dupac, X, Efstathiou, G, Elsner, F, Enßlin, T, Eriksen, H, Falgarone, E, Fergusson, J, Finelli, F, Forni, O, Frailis, M, Fraisse, A, Franceschi, E, Frejsel, A, Galeotta, S, Galli, S, Ganga, K, Giard, M, Giraud Héraud, Y, Gjerløw, E, González Nuevo, J, Górski, K, Gratton, S, Gregorio, A, Gruppuso, A, Gudmundsson, J, Hansen, F, Hanson, D, Harrison, D, Helou, G, Henrot Versillé, S, Hernández Monteagudo, C, Herranz, D, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hornstrup, A, Hovest, W, Huffenberger, K, Hurier, G, Jaffe, A, Jaffe, T, Jones, W, Juvela, M, Keihänen, E, Keskitalo, R, Kisner, T, Knoche, J, Kunz, M, Kurki Suonio, H, Lagache, G, Lamarre, J, Lasenby, A, Lattanzi, M, Lawrence, C, Leonardi, R, Lesgourgues, J, Levrier, F, Liguori, M, Lilje, P, Linden Vørnle, M, López Caniego, M, Lubin, P, Macías Pérez, J, Maggio, G, Maino, D, Mandolesi, N, Mangilli, A, Marshall, D, Martin, P, Martínez González, E, Masi, S, Matarrese, S, Mazzotta, P, Mcgehee, P, Melchiorri, A, Mendes, L, Mennella, A, Migliaccio, M, Mitra, S, Miville Deschênes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Moss, A, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Natoli, P, Netterfield, C, Nørgaard Nielsen, H, Noviello, F, Novikov, D, Novikov, I, Oxborrow, C, Paci, F, Pagano, L, Pajot, F, Paladini, R, Paoletti, D, Pasian, F, Patanchon, G, Pearson, T, Pelkonen, V, Perdereau, O, Perotto, L, Perrotta, F, Pettorino, V, Piacentini, F, Piat, M, Pierpaoli, E, Pietrobon, D, Plaszczynski, S, Pointecouteau, E, Polenta, G, Pratt, G, Prézeau, G, Prunet, S, Puget, J, Rachen, J, Reach, W, Rebolo, R, Reinecke, M, Remazeilles, M, Renault, C, Renzi, A, Ristorcelli, I, Rocha, G, Rosset, C, Rossetti, M, Roudier, G, Rubiño Martín, J, Rusholme, B, Sandri, M, Santos, D, Savelainen, M, Savini, G, Scott, D, Seiffert, M, Shellard, E, Spencer, L, Stolyarov, V, Sudiwala, R, Sunyaev, R, Sutton, D, Suur Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Tucci, M, Tuovinen, J, Umana, G, Valenziano, L, Valiviita, J, Van Tent, B, Vielva, P, Villa, F, Wade, L, Wandelt, B, Wehus, I, Yvon, D, Zacchei, A, Zonca, A, Ade, P. A. R., Aghanim, N., Arnaud, M., Ashdown, M., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Bartolo, N., Battaner, E., Benabed, K., Benoît, A., Benoit Lévy, A., Bernard, J. P., Bersanelli, M., Bielewicz, P., Bonaldi, A., Bonavera, L., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Bucher, M., Burigana, C., Butler, R. C., Calabrese, E., Catalano, A., Chamballu, A., Chiang, H. C., Christensen, P. R., Clements, D. L., Colombi, S., Colombo, L. P. L., Combet, C., Couchot, F., Coulais, A., Crill, B. P., Curto, A., Cuttaia, F., Danese, L., Davies, R. D., Davis, R. J., DE BERNARDIS, Paolo, De Rosa, A., De Zotti, G., Delabrouille, J., Désert, F. X., Dickinson, C., Diego, J. M., Dole, H., Donzelli, S., Doré, O., Douspis, M., Ducout, A., Dupac, X., Efstathiou, G., Elsner, F., Enßlin, T. A., Eriksen, H. K., Falgarone, E., Fergusson, J., Finelli, F., Forni, O., Frailis, M., Fraisse, A. A., Franceschi, E., Frejsel, A., Galeotta, S., Galli, S., Ganga, K., Giard, M., Giraud Héraud, Y., Gjerløw, E., González Nuevo, J., Górski, K. M., Gratton, S., Gregorio, A., Gruppuso, A., Gudmundsson, J. E., Hansen, F. K., Hanson, D., Harrison, D. L., Helou, G., Henrot Versillé, S., Hernández Monteagudo, C., Herranz, D., Hildebrandt, S. R., Hivon, E., Hobson, M., Holmes, W. A., Hornstrup, A., Hovest, W., Huffenberger, K. M., Hurier, G., Jaffe, A. H., Jaffe, T. R., Jones, W. C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T. S., Knoche, J., Kunz, M., Kurki Suonio, H., Lagache, G., Lamarre, J. M., Lasenby, A., Lattanzi, M., Lawrence, C. R., Leonardi, R., Lesgourgues, J., Levrier, F., Liguori, M., Lilje, P. B., Linden Vørnle, M., López Caniego, M., Lubin, P. M., Macías Pérez, J. F., Maggio, G., Maino, D., Mandolesi, N., Mangilli, A., Marshall, D. J., Martin, P. G., Martínez González, E., MASI, Silvia, Matarrese, S., Mazzotta, P., Mcgehee, P., MELCHIORRI, Alessandro, Mendes, L., Mennella, A., Migliaccio, M., Mitra, S., Miville Deschênes, M. A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Moss, A., Munshi, D., Murphy, J. A., Naselsky, P., NATI, FEDERICO, Natoli, P., Netterfield, C. B., Nørgaard Nielsen, H. U., Noviello, F., Novikov, D., Novikov, I., Oxborrow, C. A., Paci, F., Pagano, L., Pajot, F., Paladini, R., Paoletti, D., Pasian, F., Patanchon, G., Pearson, T. J., Pelkonen, V. M., Perdereau, O., Perotto, L., Perrotta, F., Pettorino, V., PIACENTINI, Francesco, Piat, M., Pierpaoli, E., Pietrobon, D., Plaszczynski, S., Pointecouteau, E., Polenta, G., Pratt, G. W., Prézeau, G., Prunet, S., Puget, J. L., Rachen, J. P., Reach, W. T., Rebolo, R., Reinecke, M., Remazeilles, M., Renault, C., Renzi, A., Ristorcelli, I., Rocha, G., Rosset, C., Rossetti, M., Roudier, G., Rubiño Martín, J. A., Rusholme, B., Sandri, M., Santos, D., Savelainen, M., Savini, G., Scott, D., Seiffert, M. D., Shellard, E. P. S., Spencer, L. D., Stolyarov, V., Sudiwala, R., Sunyaev, R., Sutton, D., Suur Uski, A. S., Sygnet, J. F., Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., Tuovinen, J., Umana, G., Valenziano, L., Valiviita, J., Van Tent, B., Vielva, P., Villa, F., Wade, L. A., Wandelt, B. D., Wehus, I. K., Yvon, D., Zacchei, A., Zonca, A., Ade, P, Aghanim, N, Arnaud, M, Ashdown, M, Aumont, J, Baccigalupi, C, Banday, A, Barreiro, R, Bartolo, N, Battaner, E, Benabed, K, Benoît, A, Benoit Lévy, A, Bernard, J, Bersanelli, M, Bielewicz, P, Bonaldi, A, Bonavera, L, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Bucher, M, Burigana, C, Butler, R, Calabrese, E, Catalano, A, Chamballu, A, Chiang, H, Christensen, P, Clements, D, Colombi, S, Colombo, L, Combet, C, Couchot, F, Coulais, A, Crill, B, Curto, A, Cuttaia, F, Danese, L, Davies, R, Davis, R, DE BERNARDIS, P, De Rosa, A, De Zotti, G, Delabrouille, J, Désert, F, Dickinson, C, Diego, J, Dole, H, Donzelli, S, Doré, O, Douspis, M, Ducout, A, Dupac, X, Efstathiou, G, Elsner, F, Enßlin, T, Eriksen, H, Falgarone, E, Fergusson, J, Finelli, F, Forni, O, Frailis, M, Fraisse, A, Franceschi, E, Frejsel, A, Galeotta, S, Galli, S, Ganga, K, Giard, M, Giraud Héraud, Y, Gjerløw, E, González Nuevo, J, Górski, K, Gratton, S, Gregorio, A, Gruppuso, A, Gudmundsson, J, Hansen, F, Hanson, D, Harrison, D, Helou, G, Henrot Versillé, S, Hernández Monteagudo, C, Herranz, D, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hornstrup, A, Hovest, W, Huffenberger, K, Hurier, G, Jaffe, A, Jaffe, T, Jones, W, Juvela, M, Keihänen, E, Keskitalo, R, Kisner, T, Knoche, J, Kunz, M, Kurki Suonio, H, Lagache, G, Lamarre, J, Lasenby, A, Lattanzi, M, Lawrence, C, Leonardi, R, Lesgourgues, J, Levrier, F, Liguori, M, Lilje, P, Linden Vørnle, M, López Caniego, M, Lubin, P, Macías Pérez, J, Maggio, G, Maino, D, Mandolesi, N, Mangilli, A, Marshall, D, Martin, P, Martínez González, E, Masi, S, Matarrese, S, Mazzotta, P, Mcgehee, P, Melchiorri, A, Mendes, L, Mennella, A, Migliaccio, M, Mitra, S, Miville Deschênes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Moss, A, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Natoli, P, Netterfield, C, Nørgaard Nielsen, H, Noviello, F, Novikov, D, Novikov, I, Oxborrow, C, Paci, F, Pagano, L, Pajot, F, Paladini, R, Paoletti, D, Pasian, F, Patanchon, G, Pearson, T, Pelkonen, V, Perdereau, O, Perotto, L, Perrotta, F, Pettorino, V, Piacentini, F, Piat, M, Pierpaoli, E, Pietrobon, D, Plaszczynski, S, Pointecouteau, E, Polenta, G, Pratt, G, Prézeau, G, Prunet, S, Puget, J, Rachen, J, Reach, W, Rebolo, R, Reinecke, M, Remazeilles, M, Renault, C, Renzi, A, Ristorcelli, I, Rocha, G, Rosset, C, Rossetti, M, Roudier, G, Rubiño Martín, J, Rusholme, B, Sandri, M, Santos, D, Savelainen, M, Savini, G, Scott, D, Seiffert, M, Shellard, E, Spencer, L, Stolyarov, V, Sudiwala, R, Sunyaev, R, Sutton, D, Suur Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Tucci, M, Tuovinen, J, Umana, G, Valenziano, L, Valiviita, J, Van Tent, B, Vielva, P, Villa, F, Wade, L, Wandelt, B, Wehus, I, Yvon, D, Zacchei, A, Zonca, A, Ade, P. A. R., Aghanim, N., Arnaud, M., Ashdown, M., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Bartolo, N., Battaner, E., Benabed, K., Benoît, A., Benoit Lévy, A., Bernard, J. P., Bersanelli, M., Bielewicz, P., Bonaldi, A., Bonavera, L., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Bucher, M., Burigana, C., Butler, R. C., Calabrese, E., Catalano, A., Chamballu, A., Chiang, H. C., Christensen, P. R., Clements, D. L., Colombi, S., Colombo, L. P. L., Combet, C., Couchot, F., Coulais, A., Crill, B. P., Curto, A., Cuttaia, F., Danese, L., Davies, R. D., Davis, R. J., DE BERNARDIS, Paolo, De Rosa, A., De Zotti, G., Delabrouille, J., Désert, F. X., Dickinson, C., Diego, J. M., Dole, H., Donzelli, S., Doré, O., Douspis, M., Ducout, A., Dupac, X., Efstathiou, G., Elsner, F., Enßlin, T. A., Eriksen, H. K., Falgarone, E., Fergusson, J., Finelli, F., Forni, O., Frailis, M., Fraisse, A. A., Franceschi, E., Frejsel, A., Galeotta, S., Galli, S., Ganga, K., Giard, M., Giraud Héraud, Y., Gjerløw, E., González Nuevo, J., Górski, K. M., Gratton, S., Gregorio, A., Gruppuso, A., Gudmundsson, J. E., Hansen, F. K., Hanson, D., Harrison, D. L., Helou, G., Henrot Versillé, S., Hernández Monteagudo, C., Herranz, D., Hildebrandt, S. R., Hivon, E., Hobson, M., Holmes, W. A., Hornstrup, A., Hovest, W., Huffenberger, K. M., Hurier, G., Jaffe, A. H., Jaffe, T. R., Jones, W. C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T. S., Knoche, J., Kunz, M., Kurki Suonio, H., Lagache, G., Lamarre, J. M., Lasenby, A., Lattanzi, M., Lawrence, C. R., Leonardi, R., Lesgourgues, J., Levrier, F., Liguori, M., Lilje, P. B., Linden Vørnle, M., López Caniego, M., Lubin, P. M., Macías Pérez, J. F., Maggio, G., Maino, D., Mandolesi, N., Mangilli, A., Marshall, D. J., Martin, P. G., Martínez González, E., MASI, Silvia, Matarrese, S., Mazzotta, P., Mcgehee, P., MELCHIORRI, Alessandro, Mendes, L., Mennella, A., Migliaccio, M., Mitra, S., Miville Deschênes, M. A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Moss, A., Munshi, D., Murphy, J. A., Naselsky, P., NATI, FEDERICO, Natoli, P., Netterfield, C. B., Nørgaard Nielsen, H. U., Noviello, F., Novikov, D., Novikov, I., Oxborrow, C. A., Paci, F., Pagano, L., Pajot, F., Paladini, R., Paoletti, D., Pasian, F., Patanchon, G., Pearson, T. J., Pelkonen, V. M., Perdereau, O., Perotto, L., Perrotta, F., Pettorino, V., PIACENTINI, Francesco, Piat, M., Pierpaoli, E., Pietrobon, D., Plaszczynski, S., Pointecouteau, E., Polenta, G., Pratt, G. W., Prézeau, G., Prunet, S., Puget, J. L., Rachen, J. P., Reach, W. T., Rebolo, R., Reinecke, M., Remazeilles, M., Renault, C., Renzi, A., Ristorcelli, I., Rocha, G., Rosset, C., Rossetti, M., Roudier, G., Rubiño Martín, J. A., Rusholme, B., Sandri, M., Santos, D., Savelainen, M., Savini, G., Scott, D., Seiffert, M. D., Shellard, E. P. S., Spencer, L. D., Stolyarov, V., Sudiwala, R., Sunyaev, R., Sutton, D., Suur Uski, A. S., Sygnet, J. F., Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., Tuovinen, J., Umana, G., Valenziano, L., Valiviita, J., Van Tent, B., Vielva, P., Villa, F., Wade, L. A., Wandelt, B. D., Wehus, I. K., Yvon, D., Zacchei, A., and Zonca, A.
Abstract: We present the Planck Catalogue of Galactic Cold Clumps (PGCC), an all-sky catalogue of Galactic cold clump candidates detected by Planck. This catalogue is the full version of the Early Cold Core (ECC) catalogue, which was made available in 2011 with the Early Release Compact Source Catalogue (ERCSC) and which contained 915 high signal-to-noise sources. It is based on the Planck 48-month mission data that are currently being released to the astronomical community. The PGCC catalogue is an observational catalogue consisting exclusively of Galactic cold sources. The three highest Planck bands (857, 454, and 353 GHz) have been combined with IRAS data at 3 THz to perform a multi-frequency detection of sources colder than their local environment. After rejection of possible extragalactic contaminants, the PGCC catalogue contains 13188 Galactic sources spread across the whole sky, i.e., from the Galactic plane to high latitudes, following the spatial distribution of the main molecular cloud complexes. The median temperature of PGCC sources lies between 13 and 14.5 K, depending on the quality of the flux density measurements, with a temperature ranging from 5.8 to 20 K after removing the sources with the top 1% highest temperature estimates. Using seven independent methods, reliable distance estimates have been obtained for 5574 sources, which allows us to derive their physical properties such as their mass, physical size, mean density, and luminosity.The PGCC sources are located mainly in the solar neighbourhood, but also up to a distance of 10.5 kpc in the direction of the Galactic centre, and range from low-mass cores to large molecular clouds. Because of this diversity and because the PGCC catalogue contains sources in very different environments, the catalogue is useful for investigating the evolution from molecular clouds to cores. Finally, it also includes 54 additional sources located in the Small and Large Magellanic Clouds.
Published: 2016

22. Planck intermediate results: XXXV. Probing the role of the magnetic field in the formation of structure in molecular clouds

Author: Ade, P, Aghanim, N, Alves, M, Arnaud, M, Arzoumanian, D, Ashdown, M, Aumont, J, Baccigalupi, C, Banday, A, Barreiro, R, Bartolo, N, Battaner, E, Benabed, K, Benoît, A, Benoit Lévy, A, Bernard, J, Bersanelli, M, Bielewicz, P, Bock, J, Bonavera, L, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Bracco, A, Burigana, C, Calabrese, E, Cardoso, J, Catalano, A, Chiang, H, Christensen, P, Colombo, L, Combet, C, Couchot, F, Crill, B, Curto, A, Cuttaia, F, Danese, L, Davies, R, Davis, R, De Bernardis, P, De Rosa, A, De Zotti, G, Delabrouille, J, Dickinson, C, Diego, J, Dole, H, Donzelli, S, Doré, O, Douspis, M, Ducout, A, Dupac, X, Efstathiou, G, Elsner, F, Enßlin, T, Eriksen, H, Falceta Gonçalves, D, Falgarone, E, Ferrière, K, Finelli, F, Forni, O, Frailis, M, Fraisse, A, Franceschi, E, Frejsel, A, Galeotta, S, Galli, S, Ganga, K, Ghosh, T, Giard, M, Gjerløw, E, González Nuevo, J, Górski, K, Gregorio, A, Gruppuso, A, Gudmundsson, J, Guillet, V, Harrison, D, Helou, G, Hennebelle, P, Henrot Versillé, S, Hernández Monteagudo, C, Herranz, D, Hildebrandt, S, Hivon, E, Holmes, W, Hornstrup, A, Huffenberger, K, Hurier, G, Jaffe, A, Jaffe, T, Jones, W, Juvela, M, Keihänen, E, Keskitalo, R, Kisner, T, Knoche, J, Kunz, M, Kurki Suonio, H, Lagache, G, Lamarre, J, Lasenby, A, Lattanzi, M, Lawrence, C, Leonardi, R, Levrier, F, Liguori, M, Lilje, P, Linden Vørnle, M, López Caniego, M, Lubin, P, Macías Pérez, J, Maino, D, Mandolesi, N, Mangilli, A, Maris, M, Martin, P, Martínez González, E, Masi, S, Matarrese, S, Melchiorri, A, Mendes, L, Mennella, A, Migliaccio, M, Miville Deschênes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Netterfield, C, Noviello, F, Novikov, D, Novikov, I, Oppermann, N, Oxborrow, C, Pagano, L, Pajot, F, Paladini, R, Paoletti, D, Pasian, F, Perotto, L, Pettorino, V, Piacentini, F, Piat, M, Pierpaoli, E, Pietrobon, D, Plaszczynski, S, Pointecouteau, E, Polenta, G, Ponthieu, N, Pratt, G, Prunet, S, Puget, J, Rachen, J, Reinecke, M, Remazeilles, M, Renault, C, Renzi, A, Ristorcelli, I, Rocha, G, Rossetti, M, Roudier, G, Rubiño Martín, J, Rusholme, B, Sandri, M, Santos, D, Savelainen, M, Savini, G, Scott, D, Soler, J, Stolyarov, V, Sudiwala, R, Sutton, D, Suur Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Tucci, M, Umana, G, Valenziano, L, Valiviita, J, Van Tent, B, Vielva, P, Villa, F, Wade, L, Wandelt, B, Wehus, I, Ysard, N, Yvon, D, Zonca, A, Ade, P. A. R., Aghanim, N., Alves, M. I. R., Arnaud, M., Arzoumanian, D., Ashdown, M., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Bartolo, N., Battaner, E., Benabed, K., Benoît, A., Benoit Lévy, A., Bernard, J. P., Bersanelli, M., Bielewicz, P., Bock, J. J., Bonavera, L., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Bracco, A., Burigana, C., Calabrese, E., Cardoso, J. F., Catalano, A., Chiang, H. C., Christensen, P. R., Colombo, L. P. L., Combet, C., Couchot, F., Crill, B. P., Curto, A., Cuttaia, F., Danese, L., Davies, R. D., Davis, R. J., De Rosa, A., De Zotti, G., Delabrouille, J., Dickinson, C., Diego, J. M., Dole, H., Donzelli, S., Doré, O., Douspis, M., Ducout, A., Dupac, X., Efstathiou, G., Elsner, F., Enßlin, T. A., Eriksen, H. K., Falceta Gonçalves, D., Falgarone, E., Ferrière, K., Finelli, F., Forni, O., Frailis, M., Fraisse, A. A., Franceschi, E., Frejsel, A., Galeotta, S., Galli, S., Ganga, K., Ghosh, T., Giard, M., Gjerløw, E., González Nuevo, J., Górski, K. M., Gregorio, A., Gruppuso, A., Gudmundsson, J. E., Guillet, V., Harrison, D. L., Helou, G., Hennebelle, P., Henrot Versillé, S., Hernández Monteagudo, C., Herranz, D., Hildebrandt, S. R., Hivon, E., Holmes, W. A., Hornstrup, A., Huffenberger, K. M., Hurier, G., Jaffe, A. H., Jaffe, T. R., Jones, W. C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T. S., Knoche, J., Kunz, M., Kurki Suonio, H., Lagache, G., Lamarre, J. M., Lasenby, A., Lawrence, C. R., Leonardi, R., Levrier, F., Liguori, M., Lilje, P. B., Linden Vørnle, M., López Caniego, M., Lubin, P. M., Macías Pérez, J. F., Maino, D., Mandolesi, N., Mangilli, A., Maris, M., Martin, P. G., Martínez González, E., MASI, Silvia, Matarrese, S., MELCHIORRI, Alessandro, Mendes, L., Mennella, A., Migliaccio, M., Miville Deschênes, M. A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Munshi, D., Murphy, J. A., Naselsky, P., Netterfield, C. B., Noviello, F., Novikov, D., Novikov, I., Oppermann, N., Oxborrow, C. A., Pajot, F., Paladini, R., Paoletti, D., Pasian, F., Perotto, L., Pettorino, V., Piat, M., Pierpaoli, E., Pietrobon, D., Plaszczynski, S., Pointecouteau, E., Polenta, G., Ponthieu, N., Pratt, G. W., Prunet, S., Puget, J. L., Rachen, J. P., Reinecke, M., Remazeilles, M., Renault, C., Renzi, A., Ristorcelli, I., Rocha, G., Rossetti, M., Roudier, G., Rubiño Martín, J. A., Rusholme, B., Sandri, M., Santos, D., Savelainen, M., Savini, G., Scott, D., Soler, Juan D, Stolyarov, V., Sudiwala, R., Sutton, D., Suur Uski, A. S., Sygnet, J. F., Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., Umana, G., Valenziano, L., Valiviita, J., Van Tent, B., Vielva, P., Villa, F., Wade, L. A., Wandelt, B. D., Wehus, I. K., Ysard, N., Yvon, D., Zonca, A., Ade, P, Aghanim, N, Alves, M, Arnaud, M, Arzoumanian, D, Ashdown, M, Aumont, J, Baccigalupi, C, Banday, A, Barreiro, R, Bartolo, N, Battaner, E, Benabed, K, Benoît, A, Benoit Lévy, A, Bernard, J, Bersanelli, M, Bielewicz, P, Bock, J, Bonavera, L, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Bracco, A, Burigana, C, Calabrese, E, Cardoso, J, Catalano, A, Chiang, H, Christensen, P, Colombo, L, Combet, C, Couchot, F, Crill, B, Curto, A, Cuttaia, F, Danese, L, Davies, R, Davis, R, De Bernardis, P, De Rosa, A, De Zotti, G, Delabrouille, J, Dickinson, C, Diego, J, Dole, H, Donzelli, S, Doré, O, Douspis, M, Ducout, A, Dupac, X, Efstathiou, G, Elsner, F, Enßlin, T, Eriksen, H, Falceta Gonçalves, D, Falgarone, E, Ferrière, K, Finelli, F, Forni, O, Frailis, M, Fraisse, A, Franceschi, E, Frejsel, A, Galeotta, S, Galli, S, Ganga, K, Ghosh, T, Giard, M, Gjerløw, E, González Nuevo, J, Górski, K, Gregorio, A, Gruppuso, A, Gudmundsson, J, Guillet, V, Harrison, D, Helou, G, Hennebelle, P, Henrot Versillé, S, Hernández Monteagudo, C, Herranz, D, Hildebrandt, S, Hivon, E, Holmes, W, Hornstrup, A, Huffenberger, K, Hurier, G, Jaffe, A, Jaffe, T, Jones, W, Juvela, M, Keihänen, E, Keskitalo, R, Kisner, T, Knoche, J, Kunz, M, Kurki Suonio, H, Lagache, G, Lamarre, J, Lasenby, A, Lattanzi, M, Lawrence, C, Leonardi, R, Levrier, F, Liguori, M, Lilje, P, Linden Vørnle, M, López Caniego, M, Lubin, P, Macías Pérez, J, Maino, D, Mandolesi, N, Mangilli, A, Maris, M, Martin, P, Martínez González, E, Masi, S, Matarrese, S, Melchiorri, A, Mendes, L, Mennella, A, Migliaccio, M, Miville Deschênes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Netterfield, C, Noviello, F, Novikov, D, Novikov, I, Oppermann, N, Oxborrow, C, Pagano, L, Pajot, F, Paladini, R, Paoletti, D, Pasian, F, Perotto, L, Pettorino, V, Piacentini, F, Piat, M, Pierpaoli, E, Pietrobon, D, Plaszczynski, S, Pointecouteau, E, Polenta, G, Ponthieu, N, Pratt, G, Prunet, S, Puget, J, Rachen, J, Reinecke, M, Remazeilles, M, Renault, C, Renzi, A, Ristorcelli, I, Rocha, G, Rossetti, M, Roudier, G, Rubiño Martín, J, Rusholme, B, Sandri, M, Santos, D, Savelainen, M, Savini, G, Scott, D, Soler, J, Stolyarov, V, Sudiwala, R, Sutton, D, Suur Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Tucci, M, Umana, G, Valenziano, L, Valiviita, J, Van Tent, B, Vielva, P, Villa, F, Wade, L, Wandelt, B, Wehus, I, Ysard, N, Yvon, D, Zonca, A, Ade, P. A. R., Aghanim, N., Alves, M. I. R., Arnaud, M., Arzoumanian, D., Ashdown, M., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Bartolo, N., Battaner, E., Benabed, K., Benoît, A., Benoit Lévy, A., Bernard, J. P., Bersanelli, M., Bielewicz, P., Bock, J. J., Bonavera, L., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Bracco, A., Burigana, C., Calabrese, E., Cardoso, J. F., Catalano, A., Chiang, H. C., Christensen, P. R., Colombo, L. P. L., Combet, C., Couchot, F., Crill, B. P., Curto, A., Cuttaia, F., Danese, L., Davies, R. D., Davis, R. J., De Rosa, A., De Zotti, G., Delabrouille, J., Dickinson, C., Diego, J. M., Dole, H., Donzelli, S., Doré, O., Douspis, M., Ducout, A., Dupac, X., Efstathiou, G., Elsner, F., Enßlin, T. A., Eriksen, H. K., Falceta Gonçalves, D., Falgarone, E., Ferrière, K., Finelli, F., Forni, O., Frailis, M., Fraisse, A. A., Franceschi, E., Frejsel, A., Galeotta, S., Galli, S., Ganga, K., Ghosh, T., Giard, M., Gjerløw, E., González Nuevo, J., Górski, K. M., Gregorio, A., Gruppuso, A., Gudmundsson, J. E., Guillet, V., Harrison, D. L., Helou, G., Hennebelle, P., Henrot Versillé, S., Hernández Monteagudo, C., Herranz, D., Hildebrandt, S. R., Hivon, E., Holmes, W. A., Hornstrup, A., Huffenberger, K. M., Hurier, G., Jaffe, A. H., Jaffe, T. R., Jones, W. C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T. S., Knoche, J., Kunz, M., Kurki Suonio, H., Lagache, G., Lamarre, J. M., Lasenby, A., Lawrence, C. R., Leonardi, R., Levrier, F., Liguori, M., Lilje, P. B., Linden Vørnle, M., López Caniego, M., Lubin, P. M., Macías Pérez, J. F., Maino, D., Mandolesi, N., Mangilli, A., Maris, M., Martin, P. G., Martínez González, E., MASI, Silvia, Matarrese, S., MELCHIORRI, Alessandro, Mendes, L., Mennella, A., Migliaccio, M., Miville Deschênes, M. A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Munshi, D., Murphy, J. A., Naselsky, P., Netterfield, C. B., Noviello, F., Novikov, D., Novikov, I., Oppermann, N., Oxborrow, C. A., Pajot, F., Paladini, R., Paoletti, D., Pasian, F., Perotto, L., Pettorino, V., Piat, M., Pierpaoli, E., Pietrobon, D., Plaszczynski, S., Pointecouteau, E., Polenta, G., Ponthieu, N., Pratt, G. W., Prunet, S., Puget, J. L., Rachen, J. P., Reinecke, M., Remazeilles, M., Renault, C., Renzi, A., Ristorcelli, I., Rocha, G., Rossetti, M., Roudier, G., Rubiño Martín, J. A., Rusholme, B., Sandri, M., Santos, D., Savelainen, M., Savini, G., Scott, D., Soler, Juan D, Stolyarov, V., Sudiwala, R., Sutton, D., Suur Uski, A. S., Sygnet, J. F., Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., Umana, G., Valenziano, L., Valiviita, J., Van Tent, B., Vielva, P., Villa, F., Wade, L. A., Wandelt, B. D., Wehus, I. K., Ysard, N., Yvon, D., and Zonca, A.
Abstract: Within ten nearby (d < 450 pc) Gould belt molecular clouds we evaluate statistically the relative orientation between the magnetic field projected on the plane of sky, inferred from the polarized thermal emission of Galactic dust observed by Planck at 353 GHz, and the gas column density structures, quantified by the gradient of the column density, NH. The selected regions, covering several degrees in size, are analysed at an effective angular resolution of 10′ FWHM, thus sampling physical scales from 0.4 to 40 pc in the nearest cloud. The column densities in the selected regions range from NH ≈ 1021 to 1023 cm-2, and hence they correspond to the bulk of the molecular clouds. The relative orientation is evaluated pixel by pixel and analysed in bins of column density using the novel statistical tool called "histogram of relative orientations". Throughout this study, we assume that the polarized emission observed by Planck at 353 GHz is representative of the projected morphology of the magnetic field in each region, i.e., we assume a constant dust grain alignment efficiency, independent of the local environment. Within most clouds we find that the relative orientation changes progressively with increasing NH, from mostly parallel or having no preferred orientation to mostly perpendicular. In simulations of magnetohydrodynamic turbulence in molecular clouds this trend in relative orientation is a signature of Alfvénic or sub-Alfvénic turbulence, implying that the magnetic field is significant for the gas dynamics at the scales probed by Planck. We compare the deduced magnetic field strength with estimates we obtain from other methods and discuss the implications of the Planck observations for the general picture of molecular cloud formation and evolution.
Published: 2016

23. 14N/15N ratio measurements in prestellar cores with N2H+: new evidence of 15N-antifractionation

Author: Jorma Harju, Luca Dore, E. Leonardo, Luca Bizzocchi, Elena Redaelli, Paola Caselli, Ana Chacón-Tanarro, Department of Physics, Redaelli, E., Bizzocchi, L., Caselli, P., Harju, J., Chacón-Tanarro, A., Leonardo, E., and Dore, L.
Subjects: Solar System, STARLESS CORES, 010504 meteorology & atmospheric sciences, NITROGEN ISOTOPIC FRACTIONATION, FOS: Physical sciences, DUST, ISM: molecule, Astrophysics, ISM: clouds, 01 natural sciences, ISM: abundances, GAS TEMPERATURE, SOLAR-SYSTEM, RADIATIVE-TRANSFER, ISM: cloud, 0103 physical sciences, Radiative transfer, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), 0105 earth and related environmental sciences, Physics, radio lines: ISM, stars: formation, Molecular cloud, L694-2, Astronomy and Astrophysics, Astronomy and Astrophysic, 115 Astronomy, Space science, Astrophysics - Astrophysics of Galaxies, ISM: abundance, ISM: molecules, HYPERFINE EXCITATION, Astrophysics - Solar and Stellar Astrophysics, 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), MOLECULAR CLOUDS, DEPLETION
Abstract: Context: The $^{15}$N fractionation has been observed to show large variations among astrophysical sources, depending both on the type of target and on the molecular tracer used. These variations cannot be reproduced by the current chemical models. Aims: Until now, the $^{14}$N/$^{15}$N ratio in N$_2$H$^+$ has been accurately measured in only one prestellar source, L1544, where strong levels of fractionation, with depletion in $^{15}$N, are found ($^{14}$N/$^{15}$N$\: \approx 1000$). In this paper we extend the sample to three more bona fide prestellar cores, in order to understand if the antifractionation in N$_2$H$^+$ is a common feature of this kind of sources. Methods: We observed N$_2$H$^+$,N$^{15}$NH$^+$ and $^{15}$NNH$^+$ in L183, L429 and L694-2 with the IRAM 30m telescope. We modeled the emission with a non-local radiative transfer code in order to obtain accurate estimates of the molecular column densities, including the one for the optically thick N$_2$H$^+$. We used the most recent collisional rate coefficients available, and with these we also re-analysed the L1544 spectra previously published. Results: The obtained isotopic ratios are in the range $630-770$ and significantly differ with the value, predicted by the most recent chemical models, of $\approx 440$, close to the protosolar value. Our prestellar core sample shows high level of depletion of $^{15}$N in diazenylium, as previously found in L1544. A revision of the N chemical networks is needed in order to explain these results., Comment: Accepted for publication in A&A
Published: 2018

24. Planck intermediate results. XXI. Comparison of polarized thermal emission from Galactic dust at 353 GHz with interstellar polarization in the visible

Author: Planck Collaboration, Ade, P. A. R., Aghanim, N., Alina, D., Aniano, G., Armitage-Caplan, C., Arnaud, M., Ashdown, M., Atrio-Barandela, F., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Battaner, E., Beichman, C., Benabed, K., Benoit-L√©vy, A., J-P, Bernard, Bersanelli, M., Bielewicz, P., Bock, J. J., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Burigana, C., J-F, Cardoso, Catalano, A., Chamballu, A., R-R, Chary, Chiang, H. C., Christensen, P. R., Colombi, S., Colombo, L. P. L., Combet, C., Couchot, F., Coulais, A., Crill, B. P., Curto, A., Cuttaia, F., Danese, L., Davies, R. D., Davis, R. J., Bernardis, P., Rosa, A., Zotti, G., Delabrouille, J., F-X, D√©sert, Clive Dickinson, Diego, J. M., Donzelli, S., Dor√©, O., Douspis, M., Dunkley, J., Dupac, X., Efstathiou, G., En√ülin, T. A., Eriksen, H. K., Falgarone, E., Fanciullo, L., Finelli, F., Forni, O., Frailis, M., Fraisse, A. A., Franceschi, E., Galeotta, S., Ganga, K., Ghosh, T., Giard, M., Giraud-H√©raud, Y., Gonz√°lez-Nuevo, J., G√≥rski, K. M., Gregorio, A., Gruppuso, A., Guillet, V., Hansen, F. K., Harrison, D. L., Helou, G., Hern√°ndez-Monteagudo, C., Hildebrandt, S. R., Hivon, E., Hobson, M., Holmes, W. A., Hornstrup, A., Huffenberger, K. M., Jaffe, A. H., Jaffe, T. R., Jones, W. C., Juvela, M., Keih√§nen, E., Keskitalo, R., Kisner, T. S., Kneissl, R., Knoche, J., Kunz, M., Kurki-Suonio, H., Lagache, G., L√§hteenm√§ki, A., J-M, Lamarre, Lasenby, A., Lawrence, C. R., Leonardi, R., Levrier, F., Liguori, M., Lilje, P. B., Linden-V√∏rnle, M., L√≥pez-Caniego, M., Lubin, P. M., Mac√ ̸as-P√©rez, J. F., Maffei, B., Magalh√£es, A. M., Maino, D., Mandolesi, N., Maris, M., Marshall, D. J., Martin, P. G., Mart√ ̸nez-Gonz√°lez, E., Masi, S., Matarrese, S., Mazzotta, P., Melchiorri, A., Mendes, L., Mennella, A., Migliaccio, M., M-A, Miville-Desch√™nes, Moneti, A., Montier, L., Morgante, G., Mortlock, D., Munshi, D., Murphy, J. A., Naselsky, P., Nati, F., Natoli, P., Netterfield, C. B., Noviello, F., Novikov, D., Novikov, I., Oxborrow, C. A., Pagano, L., Pajot, F., Paladini, R., Paoletti, D., Pasian, F., Perdereau, O., Perotto, L., Perrotta, F., Piacentini, F., Piat, M., Pietrobon, D., Plaszczynski, S., Poidevin, F., Pointecouteau, E., Polenta, G., Popa, L., Pratt, G. W., Prunet, S., J-L, Puget, Rachen, J. P., Reach, W. T., Rebolo, R., Reinecke, M., Remazeilles, M., Renault, C., Ricciardi, S., Riller, T., Ristorcelli, I., Rocha, G., Rosset, C., Roudier, G., Rusholme, B., Sandri, M., Savini, G., Scott, D., Spencer, L. D., Stolyarov, V., Stompor, R., Sudiwala, R., Sutton, D., A-S, Suur-Uski, J-F, Sygnet, Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., Umana, G., Valenziano, L., Valiviita, J., Tent, B., Vielva, P., Villa, F., Wade, L. A., Wandelt, B. D., Zonca, A., Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), PLANCK, Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS-PSL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Anne Lähteenmäki Group, Department of Radio Science and Engineering, Aalto-yliopisto, Aalto University, European Commission, Consejo Superior de Investigaciones Científicas (España), Junta de Andalucía, Ministerio de Ciencia e Innovación (España), European Research Council, Ade, P, Aghanim, N, Alina, D, Aniano, G, Armitage Caplan, C, Arnaud, M, Ashdown, M, Atrio Barandela, F, Aumont, J, Baccigalupi, C, Banday, A, Barreiro, R, Battaner, E, Beichman, C, Benabed, K, Benoit Lévy, A, Bernard, J, Bersanelli, M, Bielewicz, P, Bock, J, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Burigana, C, Cardoso, J, Catalano, A, Chamballu, A, Chary, R, Chiang, H, Christensen, P, Colombi, S, Colombo, L, Combet, C, Couchot, F, Coulais, A, Crill, B, Curto, A, Cuttaia, F, Danese, L, Davies, R, Davis, R, DE BERNARDIS, P, De Rosa, A, De Zotti, G, Delabrouille, J, Désert, F, Dickinson, C, Diego, J, Donzelli, S, Doré, O, Douspis, M, Dunkley, J, Dupac, X, Efstathiou, G, Enßlin, T, Eriksen, H, Falgarone, E, Fanciullo, L, Finelli, F, Forni, O, Frailis, M, Fraisse, A, Franceschi, E, Galeotta, S, Ganga, K, Ghosh, T, Giard, M, Giraud Héraud, Y, González Nuevo, J, Górski, K, Gregorio, A, Gruppuso, A, Guillet, V, Hansen, F, Harrison, D, Helou, G, Hernández Monteagudo, C, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hornstrup, A, Huffenberger, K, Jaffe, A, Jaffe, T, Jones, W, Juvela, M, Keihänen, E, Keskitalo, R, Kisner, T, Kneissl, R, Knoche, J, Kunz, M, Kurki Suonio, H, Lagache, G, Lähteenmäki, A, Lamarre, J, Lasenby, A, Lawrence, C, Leonardi, R, Levrier, F, Liguori, M, Lilje, P, Linden Vørnle, M, López Caniego, M, Lubin, P, Macías Pérez, J, Maffei, B, Magalhães, A, Maino, D, Mandolesi, N, Maris, M, Marshall, D, Martin, P, Martínez González, E, Masi, S, Matarrese, S, Mazzotta, P, Melchiorri, A, Mendes, L, Mennella, A, Migliaccio, M, Miville Deschênes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Natoli, P, Netterfield, C, Noviello, F, Novikov, D, Novikov, I, Oxborrow, C, Pagano, L, Pajot, F, Paladini, R, Paoletti, D, Pasian, F, Perdereau, O, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Pietrobon, D, Plaszczynski, S, Poidevin, F, Pointecouteau, E, Polenta, G, Popa, L, Pratt, G, Prunet, S, Puget, J, Rachen, J, Reach, W, Rebolo, R, Reinecke, M, Remazeilles, M, Renault, C, Ricciardi, S, Riller, T, Ristorcelli, I, Rocha, G, Rosset, C, Roudier, G, Rusholme, B, Sandri, M, Savini, G, Scott, D, Spencer, L, Stolyarov, V, Stompor, R, Sudiwala, R, Sutton, D, Suur Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Tucci, M, Umana, G, Valenziano, L, Valiviita, J, Van Tent, B, Vielva, P, Villa, F, Wade, L, Wandelt, B, Zonca, A, Ade, P. A. R., Aghanim, N., Alina, D., Aniano, G., Armitage Caplan, C., Arnaud, M., Ashdown, M., Atrio Barandela, F., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Battaner, E., Beichman, C., Benabed, K., Benoit Lévy, A., Bernard, J. P., Bersanelli, M., Bielewicz, P., Bock, J. J., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Burigana, C., Cardoso, J. F., Catalano, A., Chamballu, A., Chary, R. R., Chiang, H. C., Christensen, P. R., Colombi, S., Colombo, L. P. L., Combet, C., Couchot, F., Coulais, A., Crill, B. P., Curto, A., Cuttaia, F., Danese, L., Davies, R. D., Davis, R. J., De Bernardis, P., De Rosa, A., De Zotti, G., Delabrouille, J., Désert, F. X., Dickinson, C., Diego, J. M., Donzelli, S., Doré, O., Douspis, M., Dunkley, J., Dupac, X., Efstathiou, G., Enßlin, T. A., Eriksen, H. K., Falgarone, E., Fanciullo, L., Finelli, F., Forni, O., Frailis, M., Fraisse, A. A., Franceschi, E., Galeotta, S., Ganga, K., Ghosh, T., Giard, M., Giraud Héraud, Y., González Nuevo, J., Górski, K. M., Gregorio, Anna, Gruppuso, A., Guillet, V., Hansen, F. K., Harrison, D. L., Helou, G., Hernández Monteagudo, C., Hildebrandt, S. R., Hivon, E., Hobson, M., Holmes, W. A., Hornstrup, A., Huffenberger, K. M., Jaffe, A. H., Jaffe, T. R., Jones, W. C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T. S., Kneissl, R., Knoche, J., Kunz, M., Kurki Suonio, H., Lagache, G., Lähteenmäki, A., Lamarre, J. M., Lasenby, A., Lawrence, C. R., Leonardi, R., Levrier, F., Liguori, M., Lilje, P. B., Linden Vørnle, M., López Caniego, M., Lubin, P. M., Macías Pérez, J. F., Maffei, B., Magalhães, A. M., Maino, D., Mandolesi, N., Maris, M., Marshall, D. J., Martin, P. G., Martínez González, E., Masi, S., Matarrese, S., Mazzotta, P., Melchiorri, A., Mendes, L., Mennella, A., Migliaccio, M., Miville Deschênes, M. A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Munshi, D., Murphy, J. A., Naselsky, P., Nati, F., Natoli, P., Netterfield, C. B., Noviello, F., Novikov, D., Novikov, I., Oxborrow, C. A., Pagano, L., Pajot, F., Paladini, R., Paoletti, D., Pasian, F., Perdereau, O., Perotto, L., Perrotta, F., Piacentini, F., Piat, M., Pietrobon, D., Plaszczynski, S., Poidevin, F., Pointecouteau, E., Polenta, G., Popa, L., Pratt, G. W., Prunet, S., Puget, J. L., Rachen, J. P., Reach, W. T., Rebolo, R., Reinecke, M., Remazeilles, M., Renault, C., Ricciardi, S., Riller, T., Ristorcelli, I., Rocha, G., Rosset, C., Roudier, G., Rusholme, B., Sandri, M., Savini, G., Scott, D., Spencer, L. D., Stolyarov, V., Stompor, R., Sudiwala, R., Sutton, D., Suur Uski, A. S., Sygnet, J. F., Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., Umana, G., Valenziano, L., Valiviita, J., Van Tent, B., Vielva, P., Villa, F., Wade, L. A., Wandelt, B. D., Zonca, A., Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), École normale supérieure - Paris (ENS Paris)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université de Cergy Pontoise (UCP), Department of Physics, and Helsinki Institute of Physics
Subjects: magnetic field [ISM], Astronomy, cloud [ISM], Astrophysics, MOLECULAR CLOUD, 7. Clean energy, ISM: clouds, Light scattering, Polarization, extinction / ISM: clouds / ISM: magnetic fields / submillimeter: ISM, QB, Physics, education.field_of_study, general [ISM], Dust extinction, ISM: magnetic fields, Submillimeter: ISM, Astronomy and Astrophysics, Space and Planetary Science, extinction, WAVELENGTH DEPENDENCE, Polarization (waves), EXTINCTION, symbols, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, polarization / dust, Degree of polarization, dust, Astrophysics::Earth and Planetary Astrophysics, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], CAMPO MAGNÉTICO, clouds [ISM], Population, MU-M, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, NO, symbols.namesake, ISM: magnetic field, Settore FIS/05 - Astronomia e Astrofisica, ISM: cloud, Planck, education, ISM [submillimeter], Dust, extinction, Astrophysics::Galaxy Astrophysics, dust, extinction, polarization [ISM], LINEAR-POLARIZATION, SUBMILLIMETER POLARIZATION, SPECTRUM, polarization, magnetic fields [ISM], Astronomy and Astrophysic, 115 Astronomy, Space science, Astrophysics - Astrophysics of Galaxies, Interstellar medium, Stars, [PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], INFRARED POLARIZATION, 13. Climate action, Astrophysics of Galaxies (astro-ph.GA), PROBE WMAP OBSERVATIONS, STARS, V band
Abstract: et al., The Planck survey provides unprecedented full-sky coverage of the submillimetre polarized emission from Galactic dust. In addition to the information on the direction of the Galactic magnetic field, this also brings new constraints on the properties of dust. The dust grains that emit the radiation seen by Planck in the submillimetre also extinguish and polarize starlight in the visible. Comparison of the polarization of the emission and of the interstellar polarization on selected lines of sight probed by stars provides unique new diagnostics of the emission and light scattering properties of dust, and therefore of the important dust model parameters, composition, size, and shape. Using ancillary catalogues of interstellar polarization and extinction of starlight, we obtain the degree of polarization, pV, and the optical depth in the V band to the star, τV. Toward these stars we measure the submillimetre polarized intensity, PS, and total intensity, IS, in the Planck 353 GHz channel. We compare the column density measure in the visible, E(B − V), with that inferred from the Planck product map of the submillimetre dust optical depth and compare the polarization direction (position angle) in the visible with that in the submillimetre. For those lines of sight through the diffuse interstellar medium with comparable values of the estimated column density and polarization directions close to orthogonal, we correlate properties in the submillimetre and visible to find two ratios, RS /V = (PS/IS) / (pV/τV) and RP/p = PS/pV, the latter focusing directly on the polarization properties of the aligned grain population alone.We find RS /V = 4.2, with statistical and systematic uncertainties 0.2 and 0.3, respectively, and RP/p = 5.4 MJy sr-1, with uncertainties 0.2 and 0.3 MJy sr-1, respectively. Our estimate of RS /V is compatible with predictions based on a range of polarizing dust models that have been developed for the diffuse interstellar medium. This estimate provides new empirical validation of many of the common underlying assumptions of the models, but is not yet very discriminating among them. However, our estimate of RP/p is not compatible with predictions, which are too low by a factor of about 2.5. This more discriminating diagnostic, RP/p, indicates that changes to the optical properties in the models of the aligned grain population are required. These new diagnostics, together with the spectral dependence in the submillimetre from Planck,will be important for constraining and understanding the full complexity of the grain models, and for interpreting the Planck thermal dust polarization and refinement of the separation of this contamination of the cosmic microwave background., The development of Planck has been supported by: ESA; CNES and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MICINN, JA and RES (Spain); Tekes, AoF and CSC (Finland); DLR and MPG (Germany); CSA (Canada); DTU Space (Denmark); SER/SSO (Switzerland); RCN (Norway); SFI (Ireland); FCT/MCTES (Portugal); and PRACE (EU). The research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007−2013) / ERC grant agreement No. 267934.
Published: 2015

25. Planck intermediate results. XX. Comparison of polarized thermal emission from Galactic dust with simulations of MHD turbulence

Author: A. Coulais, G. de Zotti, A. Benoit-Lévy, B. P. Crill, B. Van Tent, Francesca Perrotta, F. Atrio-Barandela, S. Ricciardi, T. Riller, Federico Nati, Anna Gregorio, R. B. Barreiro, A. Mennella, Y. Giraud-Héraud, Torsten A. Enßlin, Radek Stompor, Jörg P. Rachen, Allan Hornstrup, D. Sutton, X. Dupac, M. Tomasi, Ben Rusholme, Mika Juvela, D. Alina, Jacques Delabrouille, Rashmikant V. Sudiwala, Marc-Antoine Miville-Deschênes, Luca Terenzi, C. Combet, Doris Arzoumanian, Etienne Pointecouteau, Marco Bersanelli, A. De Rosa, L. Fanciullo, L. Popa, J.-F. Cardoso, Jose M. Diego, A. Moneti, Benjamin D. Wandelt, Julian Borrill, Eric Hivon, Stéphane Plaszczynski, Kevin M. Huffenberger, Katia Ferrière, H. K. Eriksen, Ken Ganga, F. Noviello, O. Doré, Gianluca Morgante, Carlo Burigana, Paolo Natoli, Fabio Finelli, M. Piat, Michael P. Hobson, L. A. Montier, C. A. Oxborrow, F. Boulanger, Fabrizio Villa, J.-P. Bernard, M. I. R. Alves, Alessandro Gruppuso, Pavel Naselsky, C. Armitage-Caplan, L. Mendes, Sabino Matarrese, W. Holmes, John Bond, Peter G. Martin, F. Piacentini, Douglas J. Marshall, Igor D. Novikov, A. Curto, E. Battaner, J.-M. Lamarre, Andrea Zonca, François R. Bouchet, Juan D. Soler, R. J. Davis, J. A. Tauber, D. L. Harrison, H. C. Chiang, George Helou, Luigi Danese, V. Stolyarov, Monique Arnaud, Hannu Kurki-Suonio, M. Migliaccio, R. Kneissl, A. Catalano, L. Pagano, Karim Benabed, Tuhin Ghosh, Charles R. Lawrence, M. Tucci, Enrique Martínez-González, F. Pajot, F. Couchot, T. R. Jaffe, Nabila Aghanim, F. Pasian, Alessandro Melchiorri, Andrea Bracco, R. D. Davies, P. B. Lilje, Peter A. R. Ade, G. Polenta, Clive Dickinson, V.-M. Pelkonen, I. Ristorcelli, G. Umana, Davide Pietrobon, Ted Kisner, M. Ashdown, Edith Falgarone, S. Donzelli, Marian Douspis, Davide Maino, A. A. Fraisse, G. Aniano, L. Toffolatti, Sergi R. Hildebrandt, L. P. L. Colombo, Anthony Lasenby, E. Keihänen, G. W. Pratt, Krzysztof M. Gorski, Calvin B. Netterfield, Stephane Colombi, Martin Kunz, P. R. Christensen, A. J. Banday, Dmitry Novikov, L. A. Wade, Daniela Paoletti, A. Chamballu, R. Leonardi, C. Rosset, G. Roudier, Dipak Munshi, Mathieu Remazeilles, George Efstathiou, Michele Liguori, M. Linden-Vørnle, Jussi Valiviita, Vincent Guillet, J. González-Nuevo, Silvia Masi, Locke D. Spencer, J. Knoche, Simon Prunet, P. Bielewicz, Olivier Forni, M. Frailis, M. Reinecke, Carlo Baccigalupi, François Levrier, C. Hernández-Monteagudo, F. K. Hansen, J.-F. Sygnet, Luca Valenziano, E. Franceschi, S. Galeotta, J. Aumont, J. F. Macías-Pérez, Graca Rocha, Douglas Scott, N. Mandolesi, Andrew H. Jaffe, Philip Lubin, P. de Bernardis, L. Perotto, O. Perdereau, A.-S. Suur-Uski, M. Giard, M. Maris, Reijo Keskitalo, Guilaine Lagache, M. López-Caniego, Daniel J. Mortlock, M. Sandri, P. Vielva, J. A. Murphy, Matthieu Tristram, Pasquale Mazzotta, C. Renault, F. Cuttaia, Jean-Loup Puget, W. C. Jones, Consejo Superior de Investigaciones Científicas (España), European Research Council, Junta de Andalucía, European Commission, Ministerio de Ciencia e Innovación (España), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Planck, Department of Physics, Helsinki Institute of Physics, Ade, P, Aghanim, N, Alina, D, Alves, M, Aniano, G, Armitage-Caplan, C, Arnaud, M, Arzoumanian, D, Ashdown, M, Atrio-Barandela, F, Aumont, J, Baccigalupi, C, Banday, A, Barreiro, R, Battaner, E, Benabed, K, Benoit-Levy, A, Bernard, J, Bersanelli, M, Bielewicz, P, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Bracco, A, Burigana, C, Cardoso, J, Catalano, A, Chamballu, A, Chiang, H, Christensen, P, Colombi, S, Colombo, L, Combet, C, Couchot, F, Coulais, A, Crill, B, Curto, A, Cuttaia, F, Danese, L, Davies, R, Davis, R, De Bernardis, P, De Rosa, A, De Zotti, G, Delabrouille, J, Dickinson, C, Diego, J, Donzelli, S, Dore, O, Douspis, M, Dupac, X, Efstathiou, G, Ensslin, T, Eriksen, H, Falgarone, E, Fanciullo, L, Ferriere, K, Finelli, F, Forni, O, Frailis, M, Fraisse, A, Franceschi, E, Galeotta, S, Ganga, K, Ghosh, T, Giard, M, Giraud-Heraud, Y, Gonzalez-Nuevo, J, Gorski, K, Gregorio, A, Gruppuso, A, Guillet, V, Hansen, F, Harrison, D, Helou, G, Hernandez-Monteagudo, C, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hornstrup, A, Huffenberger, K, Jaffe, A, Jaffe, T, Jones, W, Juvela, M, Keihanen, E, Keskitalo, R, Kisner, T, Kneissl, R, Knoche, J, Kunz, M, Kurki-Suonio, H, Lagache, G, Lamarre, J, Lasenby, A, Lawrence, C, Leonardi, R, Levrier, F, Liguori, M, Lilje, P, Linden-Vornle, M, Lopez-Caniego, M, Lubin, P, Macias-Perez, J, Maino, D, Mandolesi, N, Maris, M, Marshall, D, Martin, P, Martinez-Gonzalez, E, Masi, S, Matarrese, S, Mazzotta, P, Melchiorri, A, Mendes, L, Mennella, A, Migliaccio, M, Miville-Deschenes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Natoli, P, Netterfield, C, Noviello, F, Novikov, D, Novikov, I, Oxborrow, C, Pagano, L, Pajot, F, Paoletti, D, Pasian, F, Pelkonen, V, Perdereau, O, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Pietrobon, D, Plaszczynski, S, Pointecouteau, E, Polenta, G, Popa, L, Pratt, G, Prunet, S, Puget, J, Rachen, J, Reinecke, M, Remazeilles, M, Renault, C, Ricciardi, S, Riller, T, Ristorcelli, I, Rocha, G, Rosset, C, Roudier, G, Rusholme, B, Sandri, M, Scott, D, Soler, J, Spencer, L, Stolyarov, V, Stompor, R, Sudiwala, R, Sutton, D, Suur-Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Tucci, M, Umana, G, Valenziano, L, Valiviita, J, Van Tent, B, Vielva, P, Villa, F, Wade, L, Wandelt, B, Zonca, A, Ade, P. A. R., Aghanim, N., Alina, D., Alves, M. I. R., Aniano, G., Armitage Caplan, C., Arnaud, M., Arzoumanian, D., Ashdown, M., Atrio Barandela, F., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Battaner, E., Benabed, K., Benoit Lévy, A., Bernard, J. P., Bersanelli, M., Bielewicz, P., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Bracco, A., Burigana, C., Cardoso, J. F., Catalano, A., Chamballu, A., Chiang, H. C., Christensen, P. R., Colombi, S., Colombo, L. P. L., Combet, C., Couchot, F., Coulais, A., Crill, B. P., Curto, A., Cuttaia, F., Danese, L., Davies, R. D., Davis, R. J., De Bernardis, P., De Rosa, A., De Zotti, G., Delabrouille, J., Dickinson, C., Diego, J. M., Donzelli, S., Doré, O., Douspis, M., Dupac, X., Efstathiou, G., Enßlin, T. A., Eriksen, H. K., Falgarone, E., Fanciullo, L., Ferrière, K., Finelli, F., Forni, O., Frailis, M., Fraisse, A. A., Franceschi, E., Galeotta, S., Ganga, K., Ghosh, T., Giard, M., Giraud Héraud, Y., González Nuevo, J., Górski, K. M., Gregorio, Anna, Gruppuso, A., Guillet, V., Hansen, F. K., Harrison, D. L., Helou, G., Hernández Monteagudo, C., Hildebrandt, S. R., Hivon, E., Hobson, M., Holmes, W. A., Hornstrup, A., Huffenberger, K. M., Jaffe, A. H., Jaffe, T. R., Jones, W. C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T. S., Kneissl, R., Knoche, J., Kunz, M., Kurki Suonio, H., Lagache, G., Lamarre, J. M., Lasenby, A., Lawrence, C. R., Leonardi, R., Levrier, F., Liguori, M., Lilje, P. B., Linden Vørnle, M., López Caniego, M., Lubin, P. M., Macías Pérez, J. F., Maino, D., Mandolesi, N., Maris, M., Marshall, D. J., Martin, P. G., Martínez González, E., Masi, S., Matarrese, S., Mazzotta, P., Melchiorri, A., Mendes, L., Mennella, A., Migliaccio, M., Miville Deschênes, M. A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Munshi, D., Murphy, J. A., Naselsky, P., Nati, F., Natoli, P., Netterfield, C. B., Noviello, F., Novikov, D., Novikov, I., Oxborrow, C. A., Pagano, L., Pajot, F., Paoletti, D., Pasian, F., Pelkonen, V. M., Perdereau, O., Perotto, L., Perrotta, F., Piacentini, F., Piat, M., Pietrobon, D., Plaszczynski, S., Pointecouteau, E., Polenta, G., Popa, L., Pratt, G. W., Prunet, S., Puget, J. L., Rachen, J. P., Reinecke, M., Remazeilles, M., Renault, C., Ricciardi, S., Riller, T., Ristorcelli, I., Rocha, G., Rosset, C., Roudier, G., Rusholme, B., Sandri, M., Scott, D., Soler, J. D., Spencer, L. D., Stolyarov, V., Stompor, R., Sudiwala, R., Sutton, D., Suur Uski, A. S., Sygnet, J. F., Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., Umana, G., Valenziano, L., Valiviita, J., Van Tent, B., Vielva, P., Villa, F., Wade, L. A., Wandelt, B. D., Zonca, A., Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS Paris), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), École normale supérieure - Paris (ENS Paris)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, and PSL Research University (PSL)-PSL Research University (PSL)-Université de Cergy Pontoise (UCP)
Subjects: statistical [Methods], magnetic field [ISM], Astronomy, cloud [ISM], Astrophysics, 7. Clean energy, ISM: clouds, TAURUS, Anisotropy, ComputingMilieux_MISCELLANEOUS, QB, ASSOCIATIONS, Physics, infrared: ISM, Dust , extinction, Line-of-sight, general [ISM], extinction, ADAPTIVE MESH REFINEMENT, ISM [Submillimeter], Dust, SUBMILLIMETER EMISSION, Polarization (waves), Magnetic field, symbols, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, submillimeter: ISM, INTERSTELLAR POLARIZATION, dust, extinction, ISM: magnetic fields, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], Atomic physics, clouds [ISM], EFFICIENCY, Opacity, GRAIN ALIGNMENT, ISM [Infrared], FOS: Physical sciences, MAGNETIC-FIELDS, NO, Dust, extinction, Infrared: ISM, ISM: general, Submillimeter: ISM, Astronomy and Astrophysics, Space and Planetary Science, symbols.namesake, ISM: magnetic field, Settore FIS/05 - Astronomia e Astrofisica, ISM: cloud, RADIATIVE TORQUE ALIGNMENT, Planck, Astrophysics::Galaxy Astrophysics, Brewster's angle, numerical [Methods], magnetic fields [ISM], Astronomy and Astrophysic, 115 Astronomy, Space science, Astrophysics - Astrophysics of Galaxies, Observational [Methods], [PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], 13. Climate action, Astrophysics of Galaxies (astro-ph.GA), MOLECULAR CLOUDS, Magnetohydrodynamics
Abstract: et al., Polarized emission observed by Planck HFI at 353 GHz towards a sample of nearby fields is presented, focusing on the statistics of polarization fractions p and angles ψ. The polarization fractions and column densities in these nearby fields are representative of the range of values obtained over the whole sky. We find that: (i) the largest polarization fractions are reached in the most diffuse fields; (ii) the maximum polarization fraction pmax decreases with column density NH in the more opaque fields with NH> 1021 cm-2; and (iii) the polarization fraction along a given line of sight is correlated with the local spatial coherence of the polarization angle. These observations are compared to polarized emission maps computed in simulations of anisotropic magnetohydrodynamical turbulence in which we assume a uniform intrinsic polarization fraction of the dust grains. We find that an estimate of this parameter may be recovered from the maximum polarization fraction pmax in diffuse regions where the magnetic field is ordered on large scales and perpendicular to the line of sight. This emphasizes the impact of anisotropies of the magnetic field on the emerging polarization signal. The decrease of the maximum polarization fraction with column density in nearby molecular clouds is well reproduced in the simulations, indicating that it is essentially due to the turbulent structure of the magnetic field: an accumulation of variously polarized structures along the line of sight leads to such an anti-correlation. In the simulations, polarization fractions are also found to anti-correlate with the angle dispersion function . However, the dispersion of the polarization angle for a given polarization fraction is found to be larger in the simulations than in the observations, suggesting a shortcoming in the physical content of these numerical models. In summary, we find that the turbulent structure of the magnetic field is able to reproduce the main statistical properties of the dust polarization as observed in a variety of nearby clouds, dense cores excluded, and that the large-scale field orientation with respect to the line of sight plays a major role in the quantitative analysis of these statistical properties., The development of Planck has been supported by: ESA; CNES and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MICINN, JA and RES (Spain); Tekes, AoF and CSC (Finland); DLR and MPG (Germany); CSA (Canada); DTU Space (Denmark); SER/SSO (Switzerland); RCN (Norway); SFI (Ireland); FCT/MCTES (Portugal); and PRACE (EU). The research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013) / ERC grant agreement No. 267934.
Published: 2015

26. Planck intermediate results. XIX. An overview of the polarized thermal emission from Galactic dust

Author: Planck Collaboration, Ade, P. A. R., Aghanim, N., Alina, D., Alves, M. I. R., Armitage-Caplan, C., Arnaud, M., Arzoumanian, D., Ashdown, M., Atrio-Barandela, F., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Battaner, E., Benabed, K., Benoit-Lévy, A., Bernard, J. -P., Bersanelli, M., Bielewicz, P., Bock, J. J., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Bracco, A., BURIGANA, CARLO, Butler, R. C., Cardoso, J. -F., Catalano, A., Chamballu, A., Chary, R. -R., Chiang, H. C., Christensen, P. R., Colombi, S., Colombo, L. P. L., Combet, C., Couchot, F., Coulais, A., Crill, B. P., Curto, A., CUTTAIA, FRANCESCO, Danese, L., Davies, R. D., Davis, R. J., de Bernardis, P., de Gouveia Dal Pino, E. M., De Rosa, A., de Zotti, G., Delabrouille, J., Désert, F. -X., Dickinson, C., Diego, J. M., Donzelli, S., Doré, O., Douspis, M., Dunkley, J., Dupac, X., Efstathiou, G., Enßlin, T. A., Eriksen, H. K., Falgarone, E., Ferrière, K., FINELLI, FABIO, Forni, O., FRAILIS, Marco, Fraisse, A. A., FRANCESCHI, ENRICO, GALEOTTA, Samuele, Ganga, K., Ghosh, T., Giard, M., Giraud-Héraud, Y., González-Nuevo, J., Górski, K. M., Gregorio, A., GRUPPUSO, ALESSANDRO, Guillet, V., Hansen, F. K., Harrison, D. L., Helou, G., Hernández-Monteagudo, C., Hildebrandt, S. R., Hivon, E., Hobson, M., Holmes, W. A., Hornstrup, A., Huffenberger, K. M., Jaffe, A. H., Jaffe, T. R., Jones, W. C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T. S., Kneissl, R., Knoche, J., Kunz, M., Kurki-Suonio, H., Lagache, G., Lähteenmäki, A., Lamarre, J. -M., Lasenby, A., Lawrence, C. R., Leahy, J. P., Leonardi, R., Levrier, F., Liguori, M., Lilje, P. B., Linden-Vørnle, M., López-Caniego, M., Lubin, P. M., Macías-Pérez, J. F., Maffei, B., Magalhães, A. M., Maino, D., Mandolesi, N., MARIS, Michele, Marshall, D. J., Martin, P. G., Martínez-González, E., Masi, S., Matarrese, S., Mazzotta, P., Melchiorri, A., Mendes, L., Mennella, A., Migliaccio, M., Miville-Deschênes, M. -A., Moneti, A., Montier, L., MORGANTE, GIANLUCA, Mortlock, D., Munshi, D., Murphy, J. A., Naselsky, P., Nati, F., Natoli, P., Netterfield, C. B., Noviello, F., Novikov, D., Novikov, I., Oxborrow, C. A., Pagano, L., Pajot, F., Paladini, R., PAOLETTI, DANIELA, Pasian, F., Pearson, T. J., Perdereau, O., Perotto, L., Perrotta, F., Piacentini, F., Piat, M., Pietrobon, D., Plaszczynski, S., Poidevin, F., Pointecouteau, E., Polenta, G., Popa, L., Pratt, G. W., Prunet, S., Puget, J. -L., Rachen, J. P., Reach, W. T., Rebolo, R., Reinecke, M., Remazeilles, M., Renault, C., RICCIARDI, SARA, Riller, T., Ristorcelli, I., Rocha, G., Rosset, C., Roudier, G., Rubiño-Martín, J. A., Rusholme, B., SANDRI, MAURA, Savini, G., Scott, D., Spencer, L. D., Stolyarov, V., Stompor, R., Sudiwala, R., Sutton, D., Suur-Uski, A. -S., Sygnet, J. -F., Tauber, J. A., TERENZI, LUCA, Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., UMANA, Grazia Maria Gloria, VALENZIANO, LUCA, Valiviita, J., Van Tent, B., Vielva, P., VILLA, FABRIZIO, Wade, L. A., Wandelt, B. D., ZACCHEI, Andrea, Zonca, A., AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS Paris)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), PLANCK, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Ade, P, Aghanim, N, Alina, D, Alves, M, Armitage Caplan, C, Arnaud, M, Arzoumanian, D, Ashdown, M, Atrio Barandela, F, Aumont, J, Baccigalupi, C, Banday, A, Barreiro, R, Battaner, E, Benabed, K, Benoit Lévy, A, Bernard, J, Bersanelli, M, Bielewicz, P, Bock, J, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Bracco, A, Burigana, C, Butler, R, Cardoso, J, Catalano, A, Chamballu, A, Chary, R, Chiang, H, Christensen, P, Colombi, S, Colombo, L, Combet, C, Couchot, F, Coulais, A, Crill, B, Curto, A, Cuttaia, F, Danese, L, Davies, R, Davis, R, DE BERNARDIS, P, De Gouveia Dal Pino, E, De Rosa, A, De Zotti, G, Delabrouille, J, Désert, F, Dickinson, C, Diego, J, Donzelli, S, Doré, O, Douspis, M, Dunkley, J, Dupac, X, Efstathiou, G, Enßlin, T, Eriksen, H, Falgarone, E, Ferrière, K, Finelli, F, Forni, O, Frailis, M, Fraisse, A, Franceschi, E, Galeotta, S, Ganga, K, Ghosh, T, Giard, M, Giraud Héraud, Y, González Nuevo, J, Górski, K, Gregorio, A, Gruppuso, A, Guillet, V, Hansen, F, Harrison, D, Helou, G, Hernández Monteagudo, C, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hornstrup, A, Huffenberger, K, Jaffe, A, Jaffe, T, Jones, W, Juvela, M, Keihänen, E, Keskitalo, R, Kisner, T, Kneissl, R, Knoche, J, Kunz, M, Kurki Suonio, H, Lagache, G, Lähteenmäki, A, Lamarre, J, Lasenby, A, Lawrence, C, Leahy, J, Leonardi, R, Levrier, F, Liguori, M, Lilje, P, Linden Vørnle, M, López Caniego, M, Lubin, P, Macías Pérez, J, Maffei, B, Magalhães, A, Maino, D, Mandolesi, N, Maris, M, Marshall, D, Martin, P, Martínez González, E, Masi, S, Matarrese, S, Mazzotta, P, Melchiorri, A, Mendes, L, Mennella, A, Migliaccio, M, Miville Deschênes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Natoli, P, Netterfield, C, Noviello, F, Novikov, D, Novikov, I, Oxborrow, C, Pagano, L, Pajot, F, Paladini, R, Paoletti, D, Pasian, F, Pearson, T, Perdereau, O, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Pietrobon, D, Plaszczynski, S, Poidevin, F, Pointecouteau, E, Polenta, G, Popa, L, Pratt, G, Prunet, S, Puget, J, Rachen, J, Reach, W, Rebolo, R, Reinecke, M, Remazeilles, M, Renault, C, Ricciardi, S, Riller, T, Ristorcelli, I, Rocha, G, Rosset, C, Roudier, G, Rubiño Martín, J, Rusholme, B, Sandri, M, Savini, G, Scott, D, Spencer, L, Stolyarov, V, Stompor, R, Sudiwala, R, Sutton, D, Suur Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Tucci, M, Umana, G, Valenziano, L, Valiviita, J, Van Tent, B, Vielva, P, Villa, F, Wade, L, Wandelt, B, Zacchei, A, Zonca, A, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), École normale supérieure - Paris (ENS Paris), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Ministerio de Ciencia e Innovación (España), Consejo Superior de Investigaciones Científicas (España), Junta de Andalucía, European Research Council, European Commission, Universidade de São Paulo, Department of Physics, Helsinki Institute of Physics, Anne Lähteenmäki Group, Department of Radio Science and Engineering, Aalto-yliopisto, Aalto University, ITA, USA, GBR, FRA, DEU, ESP, Ade, P. A. R., Aghanim, N., Alina, D., Alves, M. I. R., Armitage Caplan, C., Arnaud, M., Arzoumanian, D., Ashdown, M., Atrio Barandela, F., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Battaner, E., Benabed, K., Benoit Lévy, A., Bernard, J. P., Bersanelli, M., Bielewicz, P., Bock, J. J., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Bracco, A., Burigana, C., Butler, R. C., Cardoso, J. F., Catalano, A., Chamballu, A., Chary, R. R., Chiang, H. C., Christensen, P. R., Colombi, S., Colombo, L. P. L., Combet, C., Couchot, F., Coulais, A., Crill, B. P., Curto, A., Cuttaia, F., Danese, L., Davies, R. D., Davis, R. J., De Bernardis, P., De Gouveia Dal Pino, E. M., De Rosa, A., De Zotti, G., Delabrouille, J., Désert, F. X., Dickinson, C., Diego, J. M., Donzelli, S., Doré, O., Douspis, M., Dunkley, J., Dupac, X., Efstathiou, G., Enßlin, T. A., Eriksen, H. K., Falgarone, E., Ferrière, K., Finelli, F., Forni, O., Frailis, M., Fraisse, A. A., Franceschi, E., Galeotta, S., Ganga, K., Ghosh, T., Giard, M., Giraud Héraud, Y., González Nuevo, J., Górski, K. M., Gregorio, Anna, Gruppuso, A., Guillet, V., Hansen, F. K., Harrison, D. L., Helou, G., Hernández Monteagudo, C., Hildebrandt, S. R., Hivon, E., Hobson, M., Holmes, W. A., Hornstrup, A., Huffenberger, K. M., Jaffe, A. H., Jaffe, T. R., Jones, W. C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T. S., Kneissl, R., Knoche, J., Kunz, M., Kurki Suonio, H., Lagache, G., Lähteenmäki, A., Lamarre, J. M., Lasenby, A., Lawrence, C. R., Leahy, J. P., Leonardi, R., Levrier, F., Liguori, M., Lilje, P. B., Linden Vørnle, M., López Caniego, M., Lubin, P. M., Macías Pérez, J. F., Maffei, B., Magalhães, A. M., Maino, D., Mandolesi, N., Maris, M., Marshall, D. J., Martin, P. G., Martínez González, E., Masi, S., Matarrese, S., Mazzotta, P., Melchiorri, A., Mendes, L., Mennella, A., Migliaccio, M., Miville Deschênes, M. A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Munshi, D., Murphy, J. A., Naselsky, P., Nati, F., Natoli, P., Netterfield, C. B., Noviello, F., Novikov, D., Novikov, I., Oxborrow, C. A., Pagano, L., Pajot, F., Paladini, R., Paoletti, D., Pasian, F., Pearson, T. J., Perdereau, O., Perotto, L., Perrotta, F., Piacentini, F., Piat, M., Pietrobon, D., Plaszczynski, S., Poidevin, F., Pointecouteau, E., Polenta, G., Popa, L., Pratt, G. W., Prunet, S., Puget, J. L., Rachen, J. P., Reach, W. T., Rebolo, R., Reinecke, M., Remazeilles, M., Renault, C., Ricciardi, S., Riller, T., Ristorcelli, I., Rocha, G., Rosset, C., Roudier, G., Rubiño Martín, J. A., Rusholme, B., Sandri, M., Savini, G., Scott, D., Spencer, L. D., Stolyarov, V., Stompor, R., Sudiwala, R., Sutton, D., Suur Uski, A. S., Sygnet, J. F., Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., Umana, G., Valenziano, L., Valiviita, J., Van Tent, B., Vielva, P., Villa, F., Wade, L. A., Wandelt, B. D., Zacchei, A., and Zonca, A.
Subjects: magnetic field [ISM], EXTRAGALACTIC SOURCES, Astronomy, cloud [ISM], Dust, extinction, ISM: clouds, ISM: general, ISM: magnetic fields, Submillimeter: ISM, Astronomy and Astrophysics, Space and Planetary Science, [ISM], Astrophysics, clouds, 7. Clean energy, Radiative transfer, INTERSTELLAR TURBULENCE, SOUTHERN SKY, extinction / ISM: magnetic fields / ISM: clouds / submillimeter: ISM, QB, Physics, general [ISM], extinction, Dust, Polarization (waves), Magnetic field, ROTATION MEASURES, symbols, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Polar, dust, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], dust [ISM], clouds [ISM], NUVENS, GRAIN ALIGNMENT, ISM: general / dust, FOS: Physical sciences, Cosmic ray, 1.4 GHZ, Astrophysics::Cosmology and Extragalactic Astrophysics, NO, symbols.namesake, ISM: magnetic field, Settore FIS/05 - Astronomia e Astrofisica, ISM: cloud, Faraday effect, RADIATIVE TORQUE ALIGNMENT, Planck, FORMING MOLECULAR CLOUDS, ISM [submillimeter], Astrophysics::Galaxy Astrophysics, Brewster's angle, magnetic fields [ISM], Astronomy and Astrophysic, 115 Astronomy, Space science, Astrophysics - Astrophysics of Galaxies, [PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], Astrophysics of Galaxies (astro-ph.GA), PROBE WMAP OBSERVATIONS, MAGNETIC-FIELD GEOMETRY
Abstract: et al., This paper presents an overview of the polarized sky as seen by Planck HFI at 353 GHz, which is the most sensitive Planck channel for dust polarization. We construct and analyse maps of dust polarization fraction and polarization angle at 1° resolution, taking into account noise bias and possible systematic effects. The sensitivity of the Planck HFI polarization measurements allows for the first time a mapping of Galactic dust polarized emission on large scales, including low column density regions. We find that the maximum observed dust polarization fraction is high (pmax = 19.8%), in particular in some regions of moderate hydrogen column density (NH < 2 × 1021 cm-2). The polarization fraction displays a large scatter at NH below a few 1021 cm-2. There is a general decrease in the dust polarization fraction with increasing column density above NH ≃ 1 × 1021 cm-2 and in particular a sharp drop above NH ≃ 1.5 × 1022 cm-2. We characterize the spatial structure of the polarization angle using the angle dispersion function. We find that the polarization angle is ordered over extended areas of several square degrees, separated by filamentary structures of high angle dispersion function. These appear as interfaces where the sky projection of the magnetic field changes abruptly without variations in the column density. The polarization fraction is found to be anti-correlated with the dispersion of polarization angles. These results suggest that, at the resolution of 1°, depolarization is due mainly to fluctuations in the magnetic field orientation along the line of sight, rather than to the loss of grain alignment in shielded regions. We also compare the polarization of thermal dust emission with that of synchrotron measured with Planck, low-frequency radio data, and Faraday rotation measurements toward extragalactic sources. These components bear resemblance along the Galactic plane and in some regions such as the Fan and North Polar Spur regions. The poor match observed in other regions shows, however, that dust, cosmic-ray electrons, and thermal electrons generally sample different parts of the line of sight., The development of Planck has been supported by: ESA; CNES and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MICINN, J.A., and RES (Spain); Tekes, AoF, and CSC (Finland); DLR and MPG (Germany); CSA (Canada); DTU Space (Denmark); SER/SSO (Switzerland); RCN (Norway); SFI (Ireland); FCT/M CTES (Portugal); and PRACE (EU). The research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013)/ ERC grant agreement no 267934 and from a joint agreement between University of São Paulo, Brazil, and COFECUB, France (grant nos. USP 2007.1.433.14.2 and COFECUB Uc Te 114/08).
Published: 2015

27. Planck intermediate results. XIX. An overview of the polarized thermal emission from Galactic dust

Author: Ade, P, Aghanim, N, Alina, D, Alves, M, Armitage Caplan, C, Arnaud, M, Arzoumanian, D, Ashdown, M, Atrio Barandela, F, Aumont, J, Baccigalupi, C, Banday, A, Barreiro, R, Battaner, E, Benabed, K, Benoit Lévy, A, Bernard, J, Bersanelli, M, Bielewicz, P, Bock, J, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Bracco, A, Burigana, C, Butler, R, Cardoso, J, Catalano, A, Chamballu, A, Chary, R, Chiang, H, Christensen, P, Colombi, S, Colombo, L, Combet, C, Couchot, F, Coulais, A, Crill, B, Curto, A, Cuttaia, F, Danese, L, Davies, R, Davis, R, DE BERNARDIS, P, De Gouveia Dal Pino, E, De Rosa, A, De Zotti, G, Delabrouille, J, Désert, F, Dickinson, C, Diego, J, Donzelli, S, Doré, O, Douspis, M, Dunkley, J, Dupac, X, Efstathiou, G, Enßlin, T, Eriksen, H, Falgarone, E, Ferrière, K, Finelli, F, Forni, O, Frailis, M, Fraisse, A, Franceschi, E, Galeotta, S, Ganga, K, Ghosh, T, Giard, M, Giraud Héraud, Y, González Nuevo, J, Górski, K, Gregorio, A, Gruppuso, A, Guillet, V, Hansen, F, Harrison, D, Helou, G, Hernández Monteagudo, C, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hornstrup, A, Huffenberger, K, Jaffe, A, Jaffe, T, Jones, W, Juvela, M, Keihänen, E, Keskitalo, R, Kisner, T, Kneissl, R, Knoche, J, Kunz, M, Kurki Suonio, H, Lagache, G, Lähteenmäki, A, Lamarre, J, Lasenby, A, Lawrence, C, Leahy, J, Leonardi, R, Levrier, F, Liguori, M, Lilje, P, Linden Vørnle, M, López Caniego, M, Lubin, P, Macías Pérez, J, Maffei, B, Magalhães, A, Maino, D, Mandolesi, N, Maris, M, Marshall, D, Martin, P, Martínez González, E, Masi, S, Matarrese, S, Mazzotta, P, Melchiorri, A, Mendes, L, Mennella, A, Migliaccio, M, Miville Deschênes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Natoli, P, Netterfield, C, Noviello, F, Novikov, D, Novikov, I, Oxborrow, C, Pagano, L, Pajot, F, Paladini, R, Paoletti, D, Pasian, F, Pearson, T, Perdereau, O, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Pietrobon, D, Plaszczynski, S, Poidevin, F, Pointecouteau, E, Polenta, G, Popa, L, Pratt, G, Prunet, S, Puget, J, Rachen, J, Reach, W, Rebolo, R, Reinecke, M, Remazeilles, M, Renault, C, Ricciardi, S, Riller, T, Ristorcelli, I, Rocha, G, Rosset, C, Roudier, G, Rubiño Martín, J, Rusholme, B, Sandri, M, Savini, G, Scott, D, Spencer, L, Stolyarov, V, Stompor, R, Sudiwala, R, Sutton, D, Suur Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Tucci, M, Umana, G, Valenziano, L, Valiviita, J, Van Tent, B, Vielva, P, Villa, F, Wade, L, Wandelt, B, Zacchei, A, Zonca, A, Ade, P. A. R., Aghanim, N., Alina, D., Alves, M. I. R., Armitage Caplan, C., Arnaud, M., Arzoumanian, D., Ashdown, M., Atrio Barandela, F., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Battaner, E., Benabed, K., Benoit Lévy, A., Bernard, J. P., Bersanelli, M., Bielewicz, P., Bock, J. J., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Bracco, A., Burigana, C., Butler, R. C., Cardoso, J. F., Catalano, A., Chamballu, A., Chary, R. R., Chiang, H. C., Christensen, P. R., Colombi, S., Colombo, L. P. L., Combet, C., Couchot, F., Coulais, A., Crill, B. P., Curto, A., Cuttaia, F., Danese, L., Davies, R. D., Davis, R. J., DE BERNARDIS, Paolo, De Gouveia Dal Pino, E. M., De Rosa, A., De Zotti, G., Delabrouille, J., Désert, F. X., Dickinson, C., Diego, J. M., Donzelli, S., Doré, O., Douspis, M., Dunkley, J., Dupac, X., Efstathiou, G., Enßlin, T. A., Eriksen, H. K., Falgarone, E., Ferrière, K., Finelli, F., Forni, O., Frailis, M., Fraisse, A. A., Franceschi, E., Galeotta, S., Ganga, K., Ghosh, T., Giard, M., Giraud Héraud, Y., González Nuevo, J., Górski, K. M., Gregorio, A., Gruppuso, A., Guillet, V., Hansen, F. K., Harrison, D. L., Helou, G., Hernández Monteagudo, C., Hildebrandt, S. R., Hivon, E., Hobson, M., Holmes, W. A., Hornstrup, A., Huffenberger, K. M., Jaffe, A. H., Jaffe, T. R., Jones, W. C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T. S., Kneissl, R., Knoche, J., Kunz, M., Kurki Suonio, H., Lagache, G., Lähteenmäki, A., Lamarre, J. M., Lasenby, A., Lawrence, C. R., Leahy, J. P., Leonardi, R., Levrier, F., Liguori, M., Lilje, P. B., Linden Vørnle, M., López Caniego, M., Lubin, P. M., Macías Pérez, J. F., Maffei, B., Magalhães, A. M., Maino, D., Mandolesi, N., Maris, M., Marshall, D. J., Martin, P. G., Martínez González, E., MASI, Silvia, Matarrese, S., Mazzotta, P., MELCHIORRI, Alessandro, Mendes, L., Mennella, A., Migliaccio, M., Miville Deschênes, M. A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Munshi, D., Murphy, J. A., Naselsky, P., NATI, FEDERICO, Natoli, P., Netterfield, C. B., Noviello, F., Novikov, D., Novikov, I., Oxborrow, C. A., PAGANO, LUCA, Pajot, F., Paladini, R., Paoletti, D., Pasian, F., Pearson, T. J., Perdereau, O., Perotto, L., Perrotta, F., PIACENTINI, Francesco, Piat, M., Pietrobon, D., Plaszczynski, S., Poidevin, F., Pointecouteau, E., Polenta, G., Popa, L., Pratt, G. W., Prunet, S., Puget, J. L., Rachen, J. P., Reach, W. T., Rebolo, R., Reinecke, M., Remazeilles, M., Renault, C., Ricciardi, S., Riller, T., Ristorcelli, I., Rocha, G., Rosset, C., Roudier, G., Rubiño Martín, J. A., Rusholme, B., Sandri, M., Savini, G., Scott, D., Spencer, L. D., Stolyarov, V., Stompor, R., Sudiwala, R., Sutton, D., Suur Uski, A. S., Sygnet, J. F., Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., Umana, G., Valenziano, L., Valiviita, J., Van Tent, B., Vielva, P., Villa, F., Wade, L. A., Wandelt, B. D., Zacchei, A., Zonca, A., Ade, P, Aghanim, N, Alina, D, Alves, M, Armitage Caplan, C, Arnaud, M, Arzoumanian, D, Ashdown, M, Atrio Barandela, F, Aumont, J, Baccigalupi, C, Banday, A, Barreiro, R, Battaner, E, Benabed, K, Benoit Lévy, A, Bernard, J, Bersanelli, M, Bielewicz, P, Bock, J, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Bracco, A, Burigana, C, Butler, R, Cardoso, J, Catalano, A, Chamballu, A, Chary, R, Chiang, H, Christensen, P, Colombi, S, Colombo, L, Combet, C, Couchot, F, Coulais, A, Crill, B, Curto, A, Cuttaia, F, Danese, L, Davies, R, Davis, R, DE BERNARDIS, P, De Gouveia Dal Pino, E, De Rosa, A, De Zotti, G, Delabrouille, J, Désert, F, Dickinson, C, Diego, J, Donzelli, S, Doré, O, Douspis, M, Dunkley, J, Dupac, X, Efstathiou, G, Enßlin, T, Eriksen, H, Falgarone, E, Ferrière, K, Finelli, F, Forni, O, Frailis, M, Fraisse, A, Franceschi, E, Galeotta, S, Ganga, K, Ghosh, T, Giard, M, Giraud Héraud, Y, González Nuevo, J, Górski, K, Gregorio, A, Gruppuso, A, Guillet, V, Hansen, F, Harrison, D, Helou, G, Hernández Monteagudo, C, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hornstrup, A, Huffenberger, K, Jaffe, A, Jaffe, T, Jones, W, Juvela, M, Keihänen, E, Keskitalo, R, Kisner, T, Kneissl, R, Knoche, J, Kunz, M, Kurki Suonio, H, Lagache, G, Lähteenmäki, A, Lamarre, J, Lasenby, A, Lawrence, C, Leahy, J, Leonardi, R, Levrier, F, Liguori, M, Lilje, P, Linden Vørnle, M, López Caniego, M, Lubin, P, Macías Pérez, J, Maffei, B, Magalhães, A, Maino, D, Mandolesi, N, Maris, M, Marshall, D, Martin, P, Martínez González, E, Masi, S, Matarrese, S, Mazzotta, P, Melchiorri, A, Mendes, L, Mennella, A, Migliaccio, M, Miville Deschênes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Natoli, P, Netterfield, C, Noviello, F, Novikov, D, Novikov, I, Oxborrow, C, Pagano, L, Pajot, F, Paladini, R, Paoletti, D, Pasian, F, Pearson, T, Perdereau, O, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Pietrobon, D, Plaszczynski, S, Poidevin, F, Pointecouteau, E, Polenta, G, Popa, L, Pratt, G, Prunet, S, Puget, J, Rachen, J, Reach, W, Rebolo, R, Reinecke, M, Remazeilles, M, Renault, C, Ricciardi, S, Riller, T, Ristorcelli, I, Rocha, G, Rosset, C, Roudier, G, Rubiño Martín, J, Rusholme, B, Sandri, M, Savini, G, Scott, D, Spencer, L, Stolyarov, V, Stompor, R, Sudiwala, R, Sutton, D, Suur Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Tucci, M, Umana, G, Valenziano, L, Valiviita, J, Van Tent, B, Vielva, P, Villa, F, Wade, L, Wandelt, B, Zacchei, A, Zonca, A, Ade, P. A. R., Aghanim, N., Alina, D., Alves, M. I. R., Armitage Caplan, C., Arnaud, M., Arzoumanian, D., Ashdown, M., Atrio Barandela, F., Aumont, J., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Battaner, E., Benabed, K., Benoit Lévy, A., Bernard, J. P., Bersanelli, M., Bielewicz, P., Bock, J. J., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Bracco, A., Burigana, C., Butler, R. C., Cardoso, J. F., Catalano, A., Chamballu, A., Chary, R. R., Chiang, H. C., Christensen, P. R., Colombi, S., Colombo, L. P. L., Combet, C., Couchot, F., Coulais, A., Crill, B. P., Curto, A., Cuttaia, F., Danese, L., Davies, R. D., Davis, R. J., DE BERNARDIS, Paolo, De Gouveia Dal Pino, E. M., De Rosa, A., De Zotti, G., Delabrouille, J., Désert, F. X., Dickinson, C., Diego, J. M., Donzelli, S., Doré, O., Douspis, M., Dunkley, J., Dupac, X., Efstathiou, G., Enßlin, T. A., Eriksen, H. K., Falgarone, E., Ferrière, K., Finelli, F., Forni, O., Frailis, M., Fraisse, A. A., Franceschi, E., Galeotta, S., Ganga, K., Ghosh, T., Giard, M., Giraud Héraud, Y., González Nuevo, J., Górski, K. M., Gregorio, A., Gruppuso, A., Guillet, V., Hansen, F. K., Harrison, D. L., Helou, G., Hernández Monteagudo, C., Hildebrandt, S. R., Hivon, E., Hobson, M., Holmes, W. A., Hornstrup, A., Huffenberger, K. M., Jaffe, A. H., Jaffe, T. R., Jones, W. C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T. S., Kneissl, R., Knoche, J., Kunz, M., Kurki Suonio, H., Lagache, G., Lähteenmäki, A., Lamarre, J. M., Lasenby, A., Lawrence, C. R., Leahy, J. P., Leonardi, R., Levrier, F., Liguori, M., Lilje, P. B., Linden Vørnle, M., López Caniego, M., Lubin, P. M., Macías Pérez, J. F., Maffei, B., Magalhães, A. M., Maino, D., Mandolesi, N., Maris, M., Marshall, D. J., Martin, P. G., Martínez González, E., MASI, Silvia, Matarrese, S., Mazzotta, P., MELCHIORRI, Alessandro, Mendes, L., Mennella, A., Migliaccio, M., Miville Deschênes, M. A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Munshi, D., Murphy, J. A., Naselsky, P., NATI, FEDERICO, Natoli, P., Netterfield, C. B., Noviello, F., Novikov, D., Novikov, I., Oxborrow, C. A., PAGANO, LUCA, Pajot, F., Paladini, R., Paoletti, D., Pasian, F., Pearson, T. J., Perdereau, O., Perotto, L., Perrotta, F., PIACENTINI, Francesco, Piat, M., Pietrobon, D., Plaszczynski, S., Poidevin, F., Pointecouteau, E., Polenta, G., Popa, L., Pratt, G. W., Prunet, S., Puget, J. L., Rachen, J. P., Reach, W. T., Rebolo, R., Reinecke, M., Remazeilles, M., Renault, C., Ricciardi, S., Riller, T., Ristorcelli, I., Rocha, G., Rosset, C., Roudier, G., Rubiño Martín, J. A., Rusholme, B., Sandri, M., Savini, G., Scott, D., Spencer, L. D., Stolyarov, V., Stompor, R., Sudiwala, R., Sutton, D., Suur Uski, A. S., Sygnet, J. F., Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Tucci, M., Umana, G., Valenziano, L., Valiviita, J., Van Tent, B., Vielva, P., Villa, F., Wade, L. A., Wandelt, B. D., Zacchei, A., and Zonca, A.
Abstract: This paper presents an overview of the polarized sky as seen by Planck HFI at 353 GHz, which is the most sensitive Planck channel for dust polarization. We construct and analyse maps of dust polarization fraction and polarization angle at 1° resolution, taking into account noise bias and possible systematic effects. The sensitivity of the Planck HFI polarization measurements allows for the first time a mapping of Galactic dust polarized emission on large scales, including low column density regions. We find that the maximum observed dust polarization fraction is high (pmax = 19.8%), in particular in some regions of moderate hydrogen column density (NH < 2 × 1021 cm-2). The polarization fraction displays a large scatter at NH below a few 1021 cm-2. There is a general decrease in the dust polarization fraction with increasing column density above NH ∼ 1 × 1021 cm-2 and in particular a sharp drop above NH ∼ 1.5 × 1022 cm-2. We characterize the spatial structure of the polarization angle using the angle dispersion function. We find that the polarization angle is ordered over extended areas of several square degrees, separated by filamentary structures of high angle dispersion function. These appear as interfaces where the sky projection of the magnetic field changes abruptly without variations in the column density. The polarization fraction is found to be anti-correlated with the dispersion of polarization angles. These results suggest that, at the resolution of 1°, depolarization is due mainly to fluctuations in the magnetic field orientation along the line of sight, rather than to the loss of grain alignment in shielded regions. We also compare the polarization of thermal dust emission with that of synchrotron measured with Planck, low-frequency radio data, and Faraday rotation measurements toward extragalactic sources. These components bear resemblance along the Galactic plane and in some regions such as the Fan and North Polar Spur regions. The poor match observ
Published: 2015

28. The Origin of Ionized Filaments Within the Orion-Eridanus Superbubble

Author: Andy Pon, Carl Heiles, Doug Johnstone, and John Bally
Subjects: Physics, Line-of-sight, Astronomy, FOS: Physical sciences, Astronomy and Astrophysics, Superbubble, Astrophysics, ISM: individual objects: Eridanus filments, Orion–Eridanus Superbubble, Astrophysics - Astrophysics of Galaxies, ISM: individual objects: Orion-Eridanus superbubble, Space and Planetary Science, ISM: cloud, Ionization, Astrophysics of Galaxies (astro-ph.GA), High mass, ISM: structu, Eridanus, ISM: bubble
Abstract: The Orion-Eridanus superbubble, formed by the nearby Orion high mass star-forming region, contains multiple bright H$\alpha$ filaments on the Eridanus side of the superbubble. We examine the implications of the H$\alpha$ brightnesses and sizes of these filaments, the Eridanus filaments. We find that either the filaments must be highly elongated along the line of sight or they cannot be equilibrium structures illuminated solely by the Orion star-forming region. The Eridanus filaments may, instead, have formed when the Orion-Eridanus superbubble encountered and compressed a pre-existing, ionized gas cloud, such that the filaments are now out of equilibrium and slowly recombining., Comment: 11 pages, 2 figures, accepted by MNRAS, minor grammatical changes
Published: 2014

29. SHOCK-CLOUD INTERACTION AND PARTICLE ACCELERATION IN THE SOUTHWESTERN LIMB OF SN 1006

Author: Decourchelle, A., Orlando, S., Bocchino, F., Dubner, G., Acero, F., Miceli, M., Troja, E., Miceli, M., Acero, F., Dubner, G., Decourchelle, A., Orlando, S., and Bocchino, F.
Subjects: Ciencias Físicas, Astrophysics::High Energy Astrophysical Phenomena, Hadron, Synchrotron radiation, Astrophysics, Spectral line, ISM: cloud, Indentation, Supernova remnant, ISM: individual objects (SN 1006), acceleration of particle, ISM: supernova remnant, Astrophysics::Galaxy Astrophysics, acceleration of particles, Physics, supernova remnants, X-rays: ISM [ISM], Astronomy and Astrophysics, X-rays: ISM, Shock (mechanics), Particle acceleration, Astronomía, Space and Planetary Science, individual objects: SN 1006 [ISM], clouds [ISM], CIENCIAS NATURALES Y EXACTAS, Fermi Gamma-ray Space Telescope
Abstract: The supernova remnant SN 1006 is a powerful source of high-energy particles and evolves in a relatively tenuous and uniform environment despite interacting with an atomic cloud in its northwestern limb. The X-ray image of SN 1006 reveals an indentation in the southwestern part of the shock front and the H I maps show an isolated (southwestern) cloud, having the same velocity as the northwestern cloud, whose morphology fits perfectly in the indentation. We performed spatially resolved spectral analysis of a set of small regions in the southwestern nonthermal limb and studied the deep X-ray spectra obtained within the XMM-Newton SN 1006 Large Program. We also analyzed archive H I data, obtained by combining single-dish and interferometric observations. We found that the best-fit value of N H derived from the X-ray spectra significantly increases in regions corresponding to the southwestern cloud, while the cutoff energy of the synchrotron emission decreases. The N H variation corresponds perfectly with the H I column density of the southwestern cloud, as measured from the radio data. The decrease in the cutoff energy at the indentation clearly reveals that the back side of the cloud is actually interacting with the remnant. The southwestern limb therefore presents a unique combination of efficient particle acceleration and high ambient density, thus being the most promising region for γ-ray hadronic emission in SN 1006. We estimate that such emission will be detectable with the Fermi telescope within a few years. Fil: Miceli, M.. Istituto Nazionale Di Astrofísica. Osservatorio Astronómico Di Palermo; Italia Fil: Acero, F.. National Aeronautics And Space Administration. Goddart Institute For Space Studies; Estados Unidos Fil: Dubner, Gloria Mabel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina Fil: Decourchelle, A.. Universite Paris Diderot - Paris 7; Francia Fil: Orlando, S.. Istituto Nazionale Di Astrofísica. Osservatorio Astronómico Di Palermo; Italia Fil: Bocchino, F.. Istituto Nazionale Di Astrofísica. Osservatorio Astronómico Di Palermo; Italia
Published: 2014

30. LOFAR detections of low-frequency radio recombination lines towards Cassiopeia A

Author: Jochen Eislöffel, Maaijke Mevius, R. J. van Weeren, Ralph A. M. J. Wijers, A. G. Polatidis, D. McKay-Bukowski, Chiara Ferrari, John Conway, Wilfred Frieswijk, Y. Tang, Glenn J. White, Robert Braun, Michael R. Bell, J. Sluman, W. A. van Cappellen, V. N. Pandey, Richard Fallows, Raffaella Morganti, H. J. A. Röttgering, Philip Best, M. A. Garrett, T. Grit, Charlotte Sobey, Emanuela Orrú, I. M. Avruch, P. Maat, M. J. Norden, Rainer Beck, D. D. Mulcahy, Michel Tagger, Annalisa Bonafede, James Miller-Jones, Aris Karastergiou, Sarod Yatawatta, J.-M. Grießmeier, J. B. R. Oonk, H. Paas, B. Ciardi, C. Tasse, Michael W. Wise, Heino Falcke, Gianni Bernardi, Ashish Asgekar, M. Kuniyoshi, Oleg Smirnov, Matthias Steinmetz, J. Kohler, Marco Iacobelli, E. Juette, John McKean, H. Munk, Marcus Brüggen, Harvey Butcher, G. Kuper, J. M. Anderson, V. I. Kondratiev, Christian Vocks, T. E. Hassall, M. Pandey-Pommier, Casey J. Law, F. Breitling, M. de Vos, A. W. Gunst, S. Duscha, Neal Jackson, Olaf Wucknitz, Sera Markoff, A. de Jong, Laura Birzan, Giulia Macario, A. Schoenmakers, Wolfgang Reich, Huib Intema, J. W. Broderick, J. D. Mol, E. de Geus, Jason W. T. Hessels, R. Pizzo, P. Zarka, George Heald, Mark J. Bentum, W. N. Brouw, Gottfried Mann, R. Vermeulen, Matthias Hoeft, F. Batejat, Bart Scheers, I. van Bemmel, Martin Bell, F. de Gasperin, J. van Leeuwen, R. H. van de Brink, Netherlands Institute for Radio Astronomy (ASTRON), Kapteyn Astronomical Institute [Groningen], University of Groningen [Groningen], Harvard-Smithsonian Center for Astrophysics (CfA), Smithsonian Institution-Harvard University [Cambridge], SLAC National Accelerator Laboratory (SLAC), Stanford University, Jodrell Bank Cent. for Astrophysics, University of Manchester [Manchester], Max-Planck-Institut für Radioastronomie (MPIFR), SRON Netherlands Institute for Space Research (SRON), Onsala Space Observatory (OSO), Chalmers University of Technology [Göteborg], Laboratoire de Chimie Physique Moléculaire (LCPM), Ecole Polytechnique Fédérale de Lausanne (EPFL), University of Southampton, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), University of Edinburgh, Leiden Observatory [Leiden], Universiteit Leiden [Leiden], Jacobs University [Bremen], Technische Universität Dresden = Dresden University of Technology (TU Dresden), Leibniz-Institut für Astrophysik Potsdam (AIP), Max Planck Institute for Astrophysics, Max-Planck-Gesellschaft, Hamburger Sternwarte/Hamburg Observatory, Universität Hamburg (UHH), Medstar Research Institute, Thüringer Landessternwarte Tautenburg (TLS), Radboud university [Nijmegen], Institute of Mathematical and Physical Sciences, Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National d’Études Spatiales [Paris] (CNES), Unité Scientifique de la Station de Nançay (USN), Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO), Jodrell Bank Centre for Astrophysics, University of Amsterdam [Amsterdam] (UvA), Dipartimento di Matematica 'Guido Castelnuovo' [Roma I] (Sapienza University of Rome), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Centre de Mathématiques Laurent Schwartz (CMLS), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X), Ruhr-Universität Bochum [Bochum], Oxford Astrophysics, University of Oxford [Oxford], Karlsruhe Institute of Technology (KIT), Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Oulu, Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), National Radio Astronomy Observatory [Charlottesville] (NRAO), National Radio Astronomy Observatory (NRAO), Rhodes University, Grahamstown, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Argelander-Institut für Astronomie (AlfA), Rheinische Friedrich-Wilhelms-Universität Bonn, ANR-09-JCJC-0001,OPALES(2009), Harvard University-Smithsonian Institution, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Universiteit Leiden, Radboud University [Nijmegen], Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), University of Oxford, École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Asgekar, A., Oonk, J.B.R., Yatawatta, S., Van Weeren, R.J., McKean, J.P., White, G., Jackson, N., Anderson, J., Avruch, I.M., Batejat, F., Beck, R., Bell, M.E., Bell, M.R., Van Bemmel, I., Bentum, M.J., Bernardi, G., Best, P., Bîrzan, L., Bonafede, A., Braun, R., Breitling, F., Van De Brink, R.H., Broderick, J., Brouw, W.N., Brüggen, M., Butcher, H.R., Van Cappellen, W., Ciardi, B., Conway, J.E., De Gasperin, F., De Geus, E., De Jong, A., De Vos, M., Duscha, S., Eislöffel, J., Falcke, H., Fallows, R.A., Ferrari, C., Frieswijk, W., Garrett, M.A., Grießmeier, J.-M., Grit, T., Gunst, A.W., Hassall, T.E., Heald, G., Hessels, J.W.T., Hoeft, M., Iacobelli, M., Intema, H., Juette, E., Karastergiou, A., Kohler, J., Kondratiev, V.I., Kuniyoshi, M., Kuper, G., Law, C., Van Leeuwen, J., Maat, P., MacArio, G., Mann, G., Markoff, S., McKay-Bukowski, D., Mevius, M., Miller-Jones, J.C.A., Mol, J.D., Morganti, R., Mulcahy, D.D., Munk, H., Norden, M.J., Orru, E., Paas, H., Pandey-Pommier, M., Pandey, V.N., Pizzo, R., Polatidis, A.G., Reich, W., Röttgering, H., Scheers, B., Schoenmakers, A., Sluman, J., Smirnov, O., Sobey, C., Steinmetz, M., Tagger, M., Tang, Y., Tasse, C., Vermeulen, R., Vocks, C., Wijers, R.A.M.J., Wise, M.W., Wucknitz, O., Zarka, P., High Energy Astrophys. & Astropart. Phys (API, FNWI), Astronomy, and Kapteyn Astronomical Institute
Subjects: Astronomy, chemistry.chemical_element, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, ISM: individual objects: Cassiopeia A, IR-89496, Astronomy & Astrophysics, Low frequency, ISM: individual objects: Cas siopeia A, 01 natural sciences, ISM: clouds, Spectral line, CARBON, MHZ, ISM: cloud, 0103 physical sciences, EWI-24495, Spectral resolution, Supernova remnant, 010303 astronomy & astrophysics, Helium, Radio lines: ISM, Astrophysics::Galaxy Astrophysics, Line (formation), Physics, radio lines : ISM, 010308 nuclear & particles physics, Astronomy and Astrophysics, LOFAR, Astronomy and Astrophysic, REGIONS, Astrophysics - Astrophysics of Galaxies, METIS-302711, Cassiopeia A, chemistry, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, ISM: clouds / radio lines: ISM / ISM: individual objects: Cassiopeia A, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA]
Abstract: Cassiopeia A was observed using the Low-Band Antennas of the LOw Frequency ARray (LOFAR) with high spectral resolution. This allowed a search for radio recombination lines (RRLs) along the line-of-sight to this source. Five carbon-alpha RRLs were detected in absorption between 40 and 50 MHz with a signal-to-noise ratio of > 5 from two independent LOFAR datasets. The derived line velocities (v_LSR ~ -50 km/s) and integrated optical depths (~ 13 s^-1) of the RRLs in our spectra, extracted over the whole supernova remnant, are consistent within each LOFAR dataset and with those previously reported. For the first time, we are able to extract spectra against the brightest hotspot of the remnant at frequencies below 330 MHz. These spectra show significantly higher (15-80 %) integrated optical depths, indicating that there is small-scale angular structure on the order of ~1 pc in the absorbing gas distribution over the face of the remnant. We also place an upper limit of 3 x 10^-4 on the peak optical depths of hydrogen and helium RRLs. These results demonstrate that LOFAR has the desired spectral stability and sensitivity to study faint recombination lines in the decameter band., Accepted for publication in A&A Letters; 5 pages, 4 colour figures
Published: 2013

31. Detection of 15NNH+ in L1544: non-LTE modelling of dyazenilium hyperfine line emission and accurate14N/15N values

Author: Luca Bizzocchi, Luca Dore, Paola Caselli, E. Leonardo, L. Bizzocchi, P. Caselli, E. Leonardo, and L. Dore
Subjects: 010504 meteorology & atmospheric sciences, Analytical chemistry, FOS: Physical sciences, chemistry.chemical_element, Astrophysics, ISM: molecule, 01 natural sciences, Spectral line, Ion, Interplanetary dust cloud, ISM: cloud, 0103 physical sciences, 010303 astronomy & astrophysics, Hyperfine structure, Solar and Stellar Astrophysics (astro-ph.SR), 0105 earth and related environmental sciences, Line (formation), Physics, Nebula, Polyatomic ion, Astronomy and Astrophysics, Nitrogen, Astrophysics - Solar and Stellar Astrophysics, chemistry, 13. Climate action, Space and Planetary Science, ISM: individual objects: L1544, RADIO LINES: ISM
Abstract: Samples of pristine Solar System material found in meteorites and interplanetary dust particles are highly enriched in (15)N. Conspicuous nitrogen isotopic anomalies have also been measured in comets, and the (14)N/(15)N abundance ratio of the Earth is itself larger than the recognised pre-solar value by almost a factor of two. Ion--molecules, low-temperature chemical reactions in the proto-solar nebula have been repeatedly indicated as responsible for these (15)N-enhancements. We have searched for (15)N variants of the N2H+ ion in L1544, a prototypical starless cloud core which is one of the best candidate sources for detection owing to its low central core temperature and high CO depletion. The goal is the evaluation of accurate and reliable (14)N/(15)N ratio values for this species in the interstellar gas. A deep integration of the (15)NNH+ (1-0) line at 90.4 GHz has been obtained with the IRAM 30 m telescope. Non-LTE radiative transfer modelling has been performed on the J=1-0 emissions of the parent and (15)N-containing dyazenilium ions, using a Bonnor--Ebert sphere as a model for the source. A high-quality fit of the N2H+ (1--0) hyperfine spectrum has allowed us to derive a revised value of the N2H+ column density in L1544. Analysis of the observed N(15)NH+ and (15)NNH+ spectra yielded an abundance ratio N[N(15)NH+]/N[(15)NNH+] = 1.1 +/- 0.3. The obtained (14)N/(15)N ratio is ~ 1000 +/- 200, suggestive of a sizeable (15)N depletion in this molecular ion. Such a result is not consistent with the prediction of present nitrogen chemical models. As chemical models predict large (15)N fractionation of N2H+, we suggest that (15)N(14)N, or (15)N in some other molecular form, is preferentially depleted onto dust grains., 12 pages, 9 figures, manuscript accepted in A&A
Published: 2013

32. Thermal stability of a weakly magnetized rotating plasma

Author: Carlo Nipoti, Lorenzo Posti, C. Nipoti, and L. Posti
Subjects: Physics, instabilitie, Rotational symmetry, FOS: Physical sciences, Astronomy and Astrophysics, Plasma, Astrophysics, Stability (probability), Astrophysics - Astrophysics of Galaxies, Galaxy, Physics - Plasma Physics, Plasma Physics (physics.plasm-ph), Physics::Fluid Dynamics, Space and Planetary Science, ISM: cloud, galaxies: clusters: general, Physics::Plasma Physics, Dispersion relation, ISM: kinematics and dynamic, Astrophysics of Galaxies (astro-ph.GA), Thermal stability, Galaxy cluster
Abstract: The thermal stability of a weakly magnetized, rotating, stratified, optically thin plasma is studied by means of linear-perturbation analysis. We derive dispersion relations and criteria for stability against axisymmetric perturbations that generalize previous results on either non-rotating or unmagnetized fluids. The implications for the hot atmospheres of galaxies and galaxy clusters are discussed., 16 pages, 3 figures, MNRAS accepted. New figures and corrected equations with respect to previous version. Results unchanged
Published: 2012

33. GAMMA-RAY OBSERVATIONS OF THE ORION MOLECULAR CLOUDS WITH THE FERMI LARGE AREA TELESCOPE

Author: Ackermann, M., Ajello, M., Allafort, A., Antolini, E., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Berenji, B., Blandford, R. D., Bloom, E. D., Bonamente, E., Borgland, A. W., Bottacini, E., Brandt, T. J., Bregeon, J., Brigida, M., Bruel, P., Buehler, R., Buson, S., Caliandro, G. A., Cameron, R. A., Caraveo, P. A., Cecchi, C., Chekhtman, A., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Conrad, J., D'Ammando, F., de, Angelis A., de, Palma F., Dermer, C. D., do, Couto e Silva E., Drell, P. S., Drlica-Wagner, A., Falletti, L., Favuzzi, C., Fegan, S. J., Ferrara, E. C., Focke, W. B., Fukui, Y., Fusco, P., Gargano, F., Gasparrini, D., Germani, S., Giglietto, N., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Guiriec, S., Hadasch, D., Harding, A. K., Hayashi, K., Horan, D., Hou, X., Hughes, R. E., Jackson, M. S., Johannesson, G., Johnson, A. S., Kerr, M., Knodlseder, J., Kuss, M., Lande, J., Larsson, S., Lee, S.-H., Longo, F., Loparco, F., Lovellette, M. N., Lubrano, P., Mazziotta, M. N., Mehault, J., Mitthumsiri, W., Moiseev, A. A., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Naumann-Godo, M., Norris, J. P., Nuss, E., Orienti, M., Orlando, E., Ormes, J. F., Paneque, D., Panetta, J. H., Parent, D., Pelassa, V., Pesce-Rollins, M., Pierbattista, M., Piron, F., Pivato, G., Porter, T. A., Raino, S., Razzano, M., Reimer, A., Reimer, O., Roth, M., Sadrozinski, H. F.-W., Sgro, C., Siskind, E. J., Spandre, G., Spinelli, P., Strong, A. W., Enoto, Teruaki, Fukazawa, Yasushi, Hanabata, Yoshitaka, Hayashida, Masaaki, Kamae, Tsuneyoshi, Katagiri, Hideaki, Kataoka, Jun, Makishima, Kazuo, Nakamori, Takeshi, Nishino, Sho, Ohno, Masanori, Ohsugi, Takashi, Okumura, Akira, Ozaki, Masanobu, Takahashi, Hiromitsu, Takahashi, Tadayuki, Ackermann M, Ajello M, Allafort A, Antolini E, Baldini L, Ballet J, Barbiellini G, Bastieri D, Bechtol K, Bellazzini R, Berenji B, Blandford RD, Bloom ED, Bonamente E, Borgland AW, Bottacini E, Brandt TJ, Bregeon J, Brigida M, Bruel P, Buehler R, Buson S, Caliandro GA, Cameron RA, Caraveo PA, Cecchi C, Chekhtman A, Chiang J, Ciprini S, Claus R, Cohen-Tanugi J, Conrad J, DAmmando F, de Angelis A, de Palma F, Dermer CD, Silva EDE, Drell PS, Drlica-Wagner A, Enoto T, Falletti L, Favuzzi C, Fegan SJ, Ferrara EC, Focke WB, Fukazawa Y, Fukui Y, Fusco P, Gargano F, Gasparrini D, Germani S, Giglietto N, Giordano F, Giroletti M, Glanzman T, Godfrey G, Guiriec S, Hadasch D, Hanabata Y, Harding AK, Hayashida M, Hayashi K, Horan D, Hou X, Hughes RE, Jackson MS, Johannesson G, Johnson AS, Kamae T, Katagiri H, Kataoka J, Kerr M, Knodlseder J, Kuss M, Lande J, Larsson S, Lee SH, Longo F, Loparco F, Lovellette MN, Lubrano P, Makishima K, Mazziotta MN, Mehault J, Mitthumsiri W, Moiseev AA, Monte C, Monzani ME, Morselli A, Moskalenko IV, Murgia S, Nakamori T, Naumann-Godo M, Nishino S, Norris JP, Nuss E, Ohno M, Ohsugi T, Okumura A, Orienti M, Orlando E, Ormes JF, Ozaki M, Paneque D, Panetta JH, Parent D, Pelassa V, Pesce-Rollins M, Pierbattista M, Piron F, Pivato G, Porter TA, Raino S, Razzano M, Reimer A, Reimer O, Roth M, Sadrozinski HFW, Sgro C, Siskind EJ, Spandre G, Spinelli P, Strong AW, Takahashi H, Takahashi T, Tanaka T, Thayer JG, Thayer JB, Tibolla O, Tinivella M, Torres DF, Tramacere A, Troja E, Uchiyama Y, Usher TL, Vandenbroucke J, Vasileiou V, Vianello G, Vitale V, Waite AP, Wang P, Winer BL, Wood KS, Yang Z, Zimmer S, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Univers et Particules de Montpellier (LUPM), Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), GLAST, Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Montpellier 2 - Sciences et Techniques (UM2), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Ackermann, M., Ajello, M., Allafort, A., Antolini, E., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Berenji, B., Blandford, R. D., Bloom, E. D., Bonamente, E., Borgland, A. W., Bottacini, E., Brandt, T. J., Bregeon, J., Brigida, M., Bruel, P., Buehler, R., Buson, S., Caliandro, G. A., Cameron, R. A., Caraveo, P. A., Cecchi, C., Chekhtman, A., Chiang, J., Ciprini, S., Claus, R., Cohen Tanugi, J., Conrad, J., D'Ammando, F., Angelis, A., Palma, F., Dermer, C. D., E. d. C., Drell, P. S., Drlica Wagner, A., Enoto, T., Falletti, L., Favuzzi, C., Fegan, S. J., Ferrara, E. C., Focke, W. B., Fukazawa, Y., Fukui, Y., Fusco, P., Gargano, F., Gasparrini, D., Germani, S., Giglietto, N., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Guiriec, S., Hadasch, D., Hanabata, Y., Harding, A. K., Hayashida, M., Hayashi, K., Horan, D., Hou, X., Hughes, R. E., Jackson, M. S., Johannesson, G., Johnson, A. S., Kamae, T., Katagiri, H., Kataoka, J., Kerr, M., Kn\odlseder, J., Kuss, M., Lande, J., Larsson, S., Lee, S., Longo, Francesco, Loparco, F., Lovellette, M. N., Lubrano, P., Makishima, K., Mazziotta, M. N., Mehault, J., Mitthumsiri, W., Moiseev, A. A., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nakamori, T., Naumann Godo, M., Nishino, S., Norris, J. P., Nuss, E., Ohno, M., Ohsugi, T., Okumura, A., Orienti, M., Orlando, E., Ormes, J. F., Ozaki, M., Paneque, D., Panetta, J. H., Parent, D., Pelassa, V., Pesce Rollins, M., Pierbattista, M., Piron, F., Pivato, G., Porter, T. A., Rain\`o, S., Razzano, M., Reimer, A., Reimer, O., Roth, M., Sadrozinski, H. F., Sgr\`o, C., Siskind, E. J., Spandre, G., Spinelli, P., Strong, A. W., Takahashi, H., Takahashi, T., Tanaka, T., Thayer, J. G., Thayer, J. B., Tibolla, O., Tinivella, M., Torres, D. F., Tramacere, A., Troja, E., Uchiyama, Y., Usher, T. L., Vandenbroucke, J., Vasileiou, V., Vianello, G., Vitale, V., Waite, A. P., Wang, P., Winer, B. L., Wood, K. S., Yang, Z., and Zimmer, S.
Subjects: [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics::High Energy Astrophysical Phenomena, cloud [ISM], FOS: Physical sciences, Cosmic ray, Astrophysics, 01 natural sciences, ISM: clouds, law.invention, Telescope, gamma rays: ISM, ISM [gamma rays], Spitzer Space Telescope, law, ISM: cloud, 0103 physical sciences, ISM: general, ISM: individual objects: Orion A and Orion B, 010306 general physics, Electronic band structure, ISM: individual objects (Orion A and Orion B), Astronomy and Astrophysics, Space and Planetary Science, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, individual objects: Orion A and Orion B [ISM], Physics, High Energy Astrophysical Phenomena (astro-ph.HE), general [ISM], Mass distribution, Molecular cloud, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Gamma ray, Astrophysics - Astrophysics of Galaxies, ISM: individual objects (Orion A and Orion B) Online-only material: color figures, Astrophysics of Galaxies (astro-ph.GA), ddc:520, Astrophysics - High Energy Astrophysical Phenomena, Fermi Gamma-ray Space Telescope
Abstract: 著者人数: 145名, Accepted: 2012-06-25, 資料番号: SA1004170000
Published: 2012

34. Planck early results. XXIII. The first all-sky survey of Galactic cold clumps

Author: Poutanen, T., Natoli, P., Polenta, G., Bartlett, J.G., Bucher, M., Cardoso, J.-F., Catalano, A., Delabrouille, J., Ganga, K., Giraud-Héraud, Y., Patanchon, G., Piat, M., Rosset, C., Smoot, G.F., Ashdown, M., Hobson, M., Lasenby, A., Stolyarov, V., Bhatia, R., Kneissl, R., Bond, J.R., Martin, P., Miville-Deschênes, M.-A., Banday, A.J., Bernard, J.-P., Forni, O., Giard, M., Leroy, C., Marshall, D.J., Montier, L., Pointecouteau, E., Ristorcelli, I., Bock, J.J., Doré, O., Helou, G., Hildebrandt, S.R., Paladini, R., Pearson, T.J., Prézeau, G., Rocha, G., Seiffert, M.D., Challinor, A., Starck, J.-L., Yvon, D., Linden-Vørnle, Michael, Nørgaard-Nielsen, Hans Ulrik, Joncas, G., Toffolatti, L., Netterfield, C.B., Dobashi, K., Scott, D., Juvela, M., Keihänen, E., Keskitalo, R., Kurki-Suonio, H., Ysard, N., Jones, W.C., Cayón, L., Knox, L., Leonardi, R., Lubin, P.M., Zonca, A., Wandelt, B.D., Matarrese, S., De Bernardis, P., Masi, S., Melchiorri, A., Nati, F., Piacentini, F., Bersanelli, M., Mennella, A., Tomasi, M., Gregorio, A., Balbi, A., Cabella, P., De Gasperis, G., Mazzotta, P., Vittorio, N., Christensen, P.R., Naselsky, P., Rebolo, R., Rubiño-Martín, J.A., Marton, G., Toth, V., Zahorecz, S., Dupac, X., Mendes, L., Giardino, G., Laureijs, R.J., Tauber, J.A., Umana, G., Bonaldi, A., De Zotti, G., Frailis, M., Galeotta, S., Maris, M., Pasian, F., Zacchei, A., Burigana, C., Cuttaia, F., De Rosa, A., Finelli, F., Franceschi, E., Gruppuso, A., Mandolesi, N., Morgante, G., Ricciardi, S., Sandri, M., Terenzi, L., Valenziano, L., Villa, F., Donzelli, S., Stivoli, F., Désert, F.-X., Chamballu, A., Clements, D.L., Jaffe, A.H., Mortlock, D., Novikov, D., Rowan-Robinson, M., Chary, R.-R., McGehee, P., Pelkonen, V.-M., Rusholme, B., Benoît, A., Aghanim, N., Aumont, J., Boulanger, F., Douspis, M., Lagache, G., Noviello, F., Pajot, F., Ponthieu, N., Puget, J.-L., Torre, J.-P., Benabed, K., Bouchet, F.R., Colombi, S., Delouis, J.-M., Hivon, E., Moneti, A., Prunet, S., Sygnet, J.-F., Chiang, L.-Y., Efstathiou, G., Gratton, S., Harrison, D., Munshi, D., Hansen, F.K., Hoyland, R.J., Barreiro, R.B., Herranz, D., López-Caniego, M., Martínez-González, E., Vielva, P., Crill, B.P., Górski, K.M., Holmes, W.A., Lawrence, C.R., Mitra, S., Wade, L.A., Davies, R.D., Davis, R.J., Dickinson, C., Maffei, B., MacTavish, C.J., Coulais, A., Falgarone, E., Lamarre, J.-M., Arnaud, M., MacÍas-Pérez, J.F., Perotto, L., Renault, C., Santos, D., Couchot, F., Henrot-Versillé, S., Perdereau, O., Plaszczynski, S., Tristram, M., Borrill, J., Cantalupo, C.M., Kisner, T.S., Dörl, U., Enßlin, T.A., Hovest, W., Matthai, F., Reinecke, M., Riller, T., Tuovinen, J., Murphy, A., Novikov, I., Savini, G., Baccigalupi, C., Danese, L., González-Nuevo, J., Leach, S., Perrotta, F., Mann, R., Ade, P.A.R., Sudiwala, R., Osborne, S., Reach, W.T., Battaner, E., Huffenberger, K.M., Universidad de Cantabria, P. A. R., Ade, N., Aghanim, M., Arnaud, M., Ashdown, J., Aumont, C., Baccigalupi, A., Balbi, A. J., Banday, R. B., Barreiro, J. G., Bartlett, E., Battaner, K., Benabed, A., Benoît, J. P., Bernard, M., Bersanelli, R., Bhatia, J. J., Bock, A., Bonaldi, J. R., Bond, J., Borrill, F. R., Bouchet, F., Boulanger, M., Bucher, C., Burigana, P., Cabella, C. M., Cantalupo, J. F., Cardoso, A., Catalano, L., Cayón, A., Challinor, A., Chamballu, R. R., Chary, L. Y., Chiang, P. R., Christensen, D. L., Clement, S., Colombi, F., Couchot, A., Coulai, B. P., Crill, F., Cuttaia, L., Danese, R. D., Davie, R. J., Davi, P., de Bernardi, G., de Gasperi, A., de Rosa, G., de Zotti, J., Delabrouille, J. M., Deloui, F. X., Désert, C., Dickinson, K., Dobashi, S., Donzelli, O., Doré, U., Dörl, M., Douspi, X., Dupac, G., Efstathiou, T. A., Enßlin, E., Falgarone, F., Finelli, O., Forni, M., Fraili, E., Franceschi, S., Galeotta, K., Ganga, M., Giard, G., Giardino, Y., Giraud Héraud, J., González Nuevo, K. M., Górski, S., Gratton, Gregorio, Anna, A., Gruppuso, F. K., Hansen, D., Harrison, G., Helou, S., Henrot Versillé, D., Herranz, S. R., Hildebrandt, E., Hivon, M., Hobson, W. A., Holme, W., Hovest, R. J., Hoyland, K. M., Huffenberger, A. H., Jaffe, G., Jonca, W. C., Jone, M., Juvela, E., Keihänen, R., Keskitalo, T. S., Kisner, R., Kneissl, L., Knox, H., Kurki Suonio, G., Lagache, J. M., Lamarre, A., Lasenby, R. J., Laureij, C. R., Lawrence, S., Leach, R., Leonardi, C., Leroy, M., Linden Vørnle, M., López Caniego, P. M., Lubin, J. F., Macías Pérez, C. J., Mactavish, B., Maffei, N., Mandolesi, R., Mann, M., Mari, D. J., Marshall, P., Martin, E., Martínez González, G., Marton, S., Masi, S., Matarrese, F., Matthai, P., Mazzotta, P., Mcgehee, A., Melchiorri, L., Mende, A., Mennella, S., Mitra, M. A., Miville Deschêne, A., Moneti, L., Montier, G., Morgante, D., Mortlock, D., Munshi, A., Murphy, P., Naselsky, F., Nati, P., Natoli, C. B., Netterfield, H. U., Nørgaard Nielsen, F., Noviello, D., Novikov, I., Novikov, S., Osborne, F., Pajot, R., Paladini, F., Pasian, G., Patanchon, T. J., Pearson, V. M., Pelkonen, O., Perdereau, L., Perotto, F., Perrotta, F., Piacentini, M., Piat, S., Plaszczynski, E., Pointecouteau, G., Polenta, N., Ponthieu, T., Poutanen, G., Prézeau, S., Prunet, J. L., Puget, W. T., Reach, R., Rebolo, M., Reinecke, C., Renault, S., Ricciardi, T., Riller, I., Ristorcelli, G., Rocha, C., Rosset, M., Rowan Robinson, J. A., Rubiño Martín, B., Rusholme, M., Sandri, D., Santo, G., Savini, D., Scott, M. D., Seiffert, G. F., Smoot, J. L., Starck, F., Stivoli, V., Stolyarov, R., Sudiwala, J. F., Sygnet, J. A., Tauber, L., Terenzi, L., Toffolatti, M., Tomasi, J. P., Torre, V., Toth, M., Tristram, J., Tuovinen, G., Umana, L., Valenziano, P., Vielva, F., Villa, N., Vittorio, L. A., Wade, B. D., Wandelt, N., Ysard, D., Yvon, A., Zacchei, S., Zahorecz, A., Zonca, APC - Cosmologie, AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Hélium : du fondamental aux applications (HELFA), Institut Néel (NEEL), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire Traitement et Communication de l'Information (LTCI), Télécom ParisTech-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), APC - Gravitation (APC-Gravitation), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Max-Planck-Gesellschaft-Max-Planck-Gesellschaft, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), PLANCK, Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), HELFA - Hélium : du fondamental aux applications, Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Ade, P, Aghanim, N, Arnaud, M, Ashdown, M, Aumont, J, Baccigalupi, C, Balbi, A, Banday, A, Barreiro, R, Bartlett, J, Battaner, E, Benabed, K, Benoit, A, Bernard, J, Bersanelli, M, Bhatia, R, Bock, J, Bonaldi, A, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Bucher, M, Burigana, C, Cabella, P, Cantalupo, C, Cardoso, J, Catalano, A, Cayon, L, Challinor, A, Chamballu, A, Chary, R, Chiang, L, Christensen, P, Clements, D, Colombi, S, Couchot, F, Coulais, A, Crill, B, Cuttaia, F, Danese, L, Davies, R, Davis, R, De Bernardis, P, De Gasperis, G, De Rosa, A, De Zotti, G, Delabrouille, J, Delouis, J, Desert, F, Dickinson, C, Dobashi, K, Donzelli, S, Dore, O, Dorl, U, Douspis, M, Dupac, X, Efstathiou, G, Ensslin, T, Falgarone, E, Finelli, F, Forni, O, Frailis, M, Franceschi, E, Galeotta, S, Ganga, K, Giard, M, Giardino, G, Giraud-Heraud, Y, Gonzalez-Nuevo, J, Gorski, K, Gratton, S, Gregorio, A, Gruppuso, A, Hansen, F, Harrison, D, Helou, G, Henrot-Versille, S, Herranz, D, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hovest, W, Hoyland, R, Huffenberger, K, Jaffe, A, Joncas, G, Jones, W, Juvela, M, Keihanen, E, Keskitalo, R, Kisner, T, Kneissl, R, Knox, L, Kurki-Suonio, H, Lagache, G, Lamarre, J, Lasenby, A, Laureijs, R, Lawrence, C, Leach, S, Leonardi, R, Leroy, C, Linden-Vornle, M, Lopez-Caniego, M, Lubin, P, MacIas-Perez, J, Mactavish, C, Maffei, B, Mandolesi, N, Mann, R, Maris, M, Marshall, D, Martin, P, Martinez-Gonzalez, E, Marton, G, Masi, S, Matarrese, S, Matthai, F, Mazzotta, P, Mcgehee, P, Melchiorri, A, Mendes, L, Mennella, A, Mitra, S, Miville-Deschenes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Murphy, A, Naselsky, P, Nati, F, Natoli, P, Netterfield, C, Norgaard-Nielsen, H, Noviello, F, Novikov, D, Novikov, I, Osborne, S, Pajot, F, Paladini, R, Pasian, F, Patanchon, G, Pearson, T, Pelkonen, V, Perdereau, O, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Plaszczynski, S, Pointecouteau, E, Polenta, G, Ponthieu, N, Poutanen, T, Prezeau, G, Prunet, S, Puget, J, Reach, W, Rebolo, R, Reinecke, M, Renault, C, Ricciardi, S, Riller, T, Ristorcelli, I, Rocha, G, Rosset, C, Rowan-Robinson, M, Rubino-Martin, J, Rusholme, B, Sandri, M, Santos, D, Savini, G, Scott, D, Seiffert, M, Smoot, G, Starck, J, Stivoli, F, Stolyarov, V, Sudiwala, R, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Torre, J, Toth, V, Tristram, M, Tuovinen, J, Umana, G, Valenziano, L, Vielva, P, Villa, F, Vittorio, N, Wade, L, Wandelt, B, Ysard, N, Yvon, D, Zacchei, A, Zahorecz, S, Zonca, A, Department of Physics, and Helsinki Institute of Physics
Subjects: 010504 meteorology & atmospheric sciences, Experimental Physics, cloud [ISM], Astrophysics, 01 natural sciences, ISM: clouds, ISM [submillimetre], Submillimetre: ISM, 010303 astronomy & astrophysics, media_common, QB, Physics, education.field_of_study, Solar mass, Spectral index, general [ISM], extinction, stars: formation, dust, submillimetre: ISM, ISM: general, catalogs, symbols, Catalog, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], clouds [ISM], media_common.quotation_subject, Stars: formation, Population, education, dust, extinction, Astrophysics::Cosmology and Extragalactic Astrophysics, Spatial distribution, Dust, ism: general, submillimetre: ism, ism: clouds, symbols.namesake, Settore FIS/05 - Astronomia e Astrofisica, ISM: cloud, 0103 physical sciences, Planck, Astrophysics::Galaxy Astrophysics, Dust, extinction, 0105 earth and related environmental sciences, formation [stars], Molecular cloud, Astronomy and Astrophysics, Galactic plane, 115 Astronomy, Space science, Catalogues, [PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], 13. Climate action, Space and Planetary Science, Sky, Catalogs
Abstract: 33 páginas, 24 figuras, 9 tablas.-- Planck Collaboration: et al., We present the statistical properties of the Cold Clump Catalogue of Planck Objects (C3PO), the first all-sky catalogue of cold objects, in terms of their spatial distribution, dust temperature, distance, mass, and morphology. We have combined Planck and IRAS data to extract 10342 cold sources that stand out against a warmer environment. The sources are distributed over the whole sky, including in the Galactic plane, despite the confusion, and up to high latitudes (>30°). We find a strong spatial correlation of these sources with ancillary data tracing Galactic molecular structures and infrared dark clouds where the latter have been catalogued. These cold clumps are not isolated but clustered in groups. Dust temperature and emissivity spectral index values are derived from their spectral energy distributions using both Planck and IRAS data. The temperatures range from 7K to 19K, with a distribution peaking around 13K. The data are inconsistent with a constant value of the associated spectral index β over the whole temperature range: β varies from 1.4 to 2.8, with a mean value around 2.1. Distances are obtained for approximately one third of the objects. Most of the detections lie within 2kpc of the Sun, but more distant sources are also detected, out to 7kpc. The mass estimates inferred from dust emission range from 0.4 M⊙ to 2.4 × 105 M⊙. Their physical properties show that these cold sources trace a broad range of objects, from low-mass dense cores to giant molecular clouds, hence the “cold clump” terminology. This first statistical analysis of the C3PO reveals at least two colder populations of special interest with temperatures in the range 7 to 12K: cores that mostly lie close to the Sun; and massive cold clumps located in the inner Galaxy. We also describe the statistics of the early cold core (ECC) sample that is a subset of the C3PO, containing only the 915 most reliable detections. The ECC is delivered as a part of the Planck Early Release Compact Source Catalogue (ERCSC).
Published: 2011

35. Planck early results. XXII. The submillimetre properties of a sample of Galactic cold clumps

Author: Poutanen, T., Natoli, P., Polenta, G., Bartlett, J.G., Bucher, M., Cardoso, J.-F., Catalano, A., Delabrouille, J., Ganga, K., Giraud-Héraud, Y., Patanchon, G., Piat, M., Rosset, C., Smoot, G.F., Ashdown, M., Hobson, M., Lasenby, A., Stolyarov, V., Bhatia, R., Kneissl, R., Bond, J.R., Martin, P., Miville-Deschênes, M.-A., Banday, A.J., Bernard, J.-P., Forni, O., Giard, M., Leroy, C., Marshall, D.J., Meny, C., Montier, L., Pointecouteau, E., Ristorcelli, I., Bock, J.J., Doré, O., Helou, G., Hildebrandt, S.R., Paladini, R., Prézeau, G., Rocha, G., Seiffert, M.D., Challinor, A., Starck, J.-L., Yvon, D., Linden-Vørnle, Michael, Nørgaard-Nielsen, Hans Ulrik, Toffolatti, L., Netterfield, C.B., Doi, Y., Scott, D., Juvela, M., Keihänen, E., Keskitalo, R., Kurki-Suonio, H., Malinen, J., Ysard, N., Jones, W.C., Cayón, L., Knox, L., Leonardi, R., Lubin, P.M., Zonca, A., Wandelt, B.D., Matarrese, S., De Bernardis, P., Masi, S., Melchiorri, A., Nati, F., Piacentini, F., Bersanelli, M., Mennella, A., Tomasi, M., Gregorio, A., Balbi, A., Cabella, P., De Gasperis, G., Mazzotta, P., Vittorio, N., Christensen, P.R., Naselsky, P., Rebolo, R., Rubiño-Martín, J.A., Toth, V., Dupac, X., Mendes, L., Giardino, G., Laureijs, R.J., Tauber, J.A., Umana, G., Bonaldi, A., De Zotti, G., Frailis, M., Galeotta, S., Maris, M., Pasian, F., Zacchei, A., Burigana, C., Cuttaia, F., De Rosa, A., Finelli, F., Franceschi, E., Gruppuso, A., Mandolesi, N., Morgante, G., Ricciardi, S., Sandri, M., Terenzi, L., Valenziano, L., Villa, F., Donzelli, S., Stivoli, F., Désert, F.-X., Chamballu, A., Clements, D.L., Jaffe, A.H., Mortlock, D., Novikov, D., Rowan-Robinson, M., McGehee, P., Pelkonen, V.-M., Rusholme, B., Benoît, A., Aghanim, N., Aumont, J., Boulanger, F., Douspis, M., Lagache, G., Noviello, F., Pajot, F., Ponthieu, N., Puget, J.-L., Torre, J.-P., Benabed, K., Bouchet, F.R., Colombi, S., Delouis, J.-M., Hivon, E., Moneti, A., Prunet, S., Sygnet, J.-F., Chiang, L.-Y., Efstathiou, G., Gratton, S., Harrison, D., Munshi, D., Ikeda, N., Kitamura, Y., Hansen, F.K., Hoyland, R.J., Barreiro, R.B., Herranz, D., López-Caniego, M., Martínez-González, E., Vielva, P., Crill, B.P., Górski, K.M., Holmes, W.A., Lawrence, C.R., Mitra, S., Wade, L.A., Davies, R.D., Dickinson, C., Maffei, B., MacTavish, C.J., Coulais, A., Falgarone, E., Lamarre, J.-M., Pagani, L., Arnaud, M., MacÍas-Pérez, J.F., Perotto, L., Renault, C., Santos, D., Couchot, F., Henrot-Versillé, S., Perdereau, O., Plaszczynski, S., Tristram, M., Borrill, J., Cantalupo, C.M., Kisner, T.S., Dörl, U., Enßlin, T.A., Hovest, W., Matthai, F., Reinecke, M., Riller, T., Tuovinen, J., Murphy, A., Novikov, I., Savini, G., Baccigalupi, C., Danese, L., González-Nuevo, J., Leach, S., Perrotta, F., Mann, R., Ade, P.A.R., Sudiwala, R., Osborne, S., Reach, W.T., Battaner, E., Huffenberger, K.M., Ade, P. A. R., Aghanim, N., Arnaud, M., Ashdown, M., Aumont, J., Baccigalupi, C., Balbi, A., Banday, A. J., Barreiro, R. B., Bartlett, J. G., Battaner, E., Benabed, K., Benoît, A., Bernard, J. P., Bersanelli, M., Bhatia, R., Bock, J. J., Bonaldi, A., Bond, J. R., Borrill, J., Bouchet, F. R., Boulanger, F., Bucher, M., Burigana, C., Cabella, P., Cantalupo, C. M., Cardoso, J. F., Catalano, A., Cayón, L., Challinor, A., Chamballu, A., Chiang, L. Y, Christensen, P. R., Clements, D. L., Colombi, S., Couchot, F., Coulais, A., Crill, B. P., Cuttaia, F., Danese, L., Davies, R. D., de Bernardis, P., de Gasperis, G., de Rosa, A., de Zotti, G., Delabrouille, J., Delouis, J. M., Désert, F. X., Dickinson, C., Doerl, U., Doi, Y., Donzelli, S., Doré, O., Douspis, M., Dupac, X., Efstathiou, G., Ensslin, T. A., Falgarone, E., Finelli, F., Forni, O., Frailis, M., Franceschi, E., Galeotta, S., Ganga, K., Giard, M., Giardino, G., Giraud Héraud, Y., González Nuevo, J., Górski, K. M., Gratton, S., Gregorio, Anna, Gruppuso, A., Hansen, F. K., Harrison, D., Helou, G., Henrot Versillé, S., Herranz, D., Hildebrandt, S. R., Hivon, E., Hobson, M., Holmes, W. A., Hovest, W., Hoyland, R. J., Huffenberger, K. M., Ikeda, N., Jaffe, A. H., Jones, W. C., Juvela, M., Keihänen, E., Keskitalo, R., Kisner, T. S., Kitamura, Y., Kneissl, R., Knox, L., Kurki Suonio, H., Lagache, G., Lamarre, J. M., Lasenby, A., Laureijs, R. J., Lawrence, C. R., Leach, S., Leonardi, R., Leroy, C., Linden Vornle, M., López Caniego, M., Lubin, P. M., Macías Pérez, J. F., Mactavish, C. J., Maffei, B., Malinen, J., Mandolesi, N., Mann, R., Maris, M., Marshall, D. J., Martin, P., Martínez González, E., Masi, S., Matarrese, S., Matthai, F., Mazzotta, P., Mcgehee, P., Melchiorri, A., Mendes, L., Mennella, A., Meny, C., Mitra, S., Miville Deschênes, M. A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Munshi, D., Murphy, A., Naselsky, P., Nati, F., Natoli, P., Netterfield, C. B., Norgaard Nielsen, H. U., Noviello, F., Novikov, D., Novikov, I., Osborne, S., Pagani, L., Pajot, F., Paladini, R., Pasian, F., Patanchon, G., Pelkonen, V. M., Perdereau, O., Perotto, L., Perrotta, F., Piacentini, F., Piat, M., Plaszczynski, S., Pointecouteau, E., Polenta, G., Ponthieu, N., Poutanen, T., Prézeau, G., Prunet, S., Puget, J. L., Reach, W. T., Rebolo, R., Reinecke, M., Renault, C., Ricciardi, S., Riller, T., Ristorcelli, I., Rocha, G., Rosset, C., Rowan Robinson, M., Rubiño Martín, J. A., Rusholme, B., Sandri, M., Santos, D., Savini, G., Scott, D., Seiffert, M. D., Smoot, G. F., Starck, J. L., Stivoli, F., Stolyarov, V., Sudiwala, R., Sygnet, J. F., Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Torre, J. P., Toth, V., Tristram, M., Tuovinen, J., Umana, G., Valenziano, L., Vielva, P., Villa, F., Vittorio, N., Wade, L. A., Wandelt, B. D., Ysard, N., Yvon, D., Zacchei, A., Zonca, A., APC - Cosmologie, Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), HELFA - Hélium : du fondamental aux applications, Institut Néel (NEEL), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), AstroParticule et Cosmologie (APC (UMR_7164)), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), APC - Gravitation (APC-Gravitation), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Max-Planck-Gesellschaft-Max-Planck-Gesellschaft, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), PLANCK, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Hélium : du fondamental aux applications (HELFA), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Ade, P, Aghanim, N, Arnaud, M, Ashdown, M, Aumont, J, Baccigalupi, C, Balbi, A, Banday, A, Barreiro, R, Bartlett, J, Battaner, E, Benabed, K, Benoit, A, Bernard, J, Bersanelli, M, Bhatia, R, Bock, J, Bonaldi, A, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Bucher, M, Burigana, C, Cabella, P, Cantalupo, C, Cardoso, J, Catalano, A, Cayon, L, Challinor, A, Chamballu, A, Chiang, L, Christensen, P, Clements, D, Colombi, S, Couchot, F, Coulais, A, Crill, B, Cuttaia, F, Danese, L, Davies, R, De Bernardis, P, De Gasperis, G, De Rosa, A, De Zotti, G, Delabrouille, J, Delouis, J, Desert, F, Dickinson, C, Doi, Y, Donzelli, S, Dore, O, Dorl, U, Douspis, M, Dupac, X, Efstathiou, G, Ensslin, T, Falgarone, E, Finelli, F, Forni, O, Frailis, M, Franceschi, E, Galeotta, S, Ganga, K, Giard, M, Giardino, G, Giraud-Heraud, Y, Gonzalez-Nuevo, J, Gorski, K, Gratton, S, Gregorio, A, Gruppuso, A, Hansen, F, Harrison, D, Helou, G, Henrot-Versille, S, Herranz, D, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hovest, W, Hoyland, R, Huffenberger, K, Ikeda, N, Jaffe, A, Jones, W, Juvela, M, Keihanen, E, Keskitalo, R, Kisner, T, Kitamura, Y, Kneissl, R, Knox, L, Kurki-Suonio, H, Lagache, G, Lamarre, J, Lasenby, A, Laureijs, R, Lawrence, C, Leach, S, Leonardi, R, Leroy, C, Linden-Vornle, M, Lopez-Caniego, M, Lubin, P, MacIas-Perez, J, Mactavish, C, Maffei, B, Malinen, J, Mandolesi, N, Mann, R, Maris, M, Marshall, D, Martin, P, Martinez-Gonzalez, E, Masi, S, Matarrese, S, Matthai, F, Mazzotta, P, Mcgehee, P, Melchiorri, A, Mendes, L, Mennella, A, Meny, C, Mitra, S, Miville-Deschenes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Murphy, A, Naselsky, P, Nati, F, Natoli, P, Netterfield, C, Norgaard-Nielsen, H, Noviello, F, Novikov, D, Novikov, I, Osborne, S, Pagani, L, Pajot, F, Paladini, R, Pasian, F, Patanchon, G, Pelkonen, V, Perdereau, O, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Plaszczynski, S, Pointecouteau, E, Polenta, G, Ponthieu, N, Poutanen, T, Prezeau, G, Prunet, S, Puget, J, Reach, W, Rebolo, R, Reinecke, M, Renault, C, Ricciardi, S, Riller, T, Ristorcelli, I, Rocha, G, Rosset, C, Rowan-Robinson, M, Rubino-Martin, J, Rusholme, B, Sandri, M, Santos, D, Savini, G, Scott, D, Seiffert, M, Smoot, G, Starck, J, Stivoli, F, Stolyarov, V, Sudiwala, R, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Torre, J, Toth, V, Tristram, M, Tuovinen, J, Umana, G, Valenziano, L, Vielva, P, Villa, F, Vittorio, N, Wade, L, Wandelt, B, Ysard, N, Yvon, D, Zacchei, A, Zonca, A, Department of Physics, Helsinki Institute of Physics, and Universidad de Cantabria
Subjects: Experimental Physics, Continuum (design consultancy), Astrophysics, extinction – stars: formation – ISM: structure – submillimeter: ISM – stars: protostars, ISM: clouds, 7. Clean energy, 01 natural sciences, formation – ISM: structure – submillimeter: ISM – stars: protostars [extinction – stars], CMB physic, CMB physics, protostars [Stars], Astrophysics::Solar and Stellar Astrophysics, Surface brightness, 010303 astronomy & astrophysics, formation [Stars], QB, Physics, Spectral index, extinction, Planck ESA mission, Resolution (electron density), ISM [Submillimeter], Dust, Sample (graphics), Stars: protostar, dust, stars: protostars, submillimeter: ism, ism: structure, ism: clouds, stars: formation, ISM: clouds – dust, symbols, Cirrus, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], clouds [ISM], ISM: structure, Stars: formation, education, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Stars: protostars, symbols.namesake, Settore FIS/05 - Astronomia e Astrofisica, ISM: cloud, 0103 physical sciences, Emissivity, Planck, Submillimeter: ISM, Dust, extinction, Astrophysics::Galaxy Astrophysics, 010308 nuclear & particles physics, Astronomy and Astrophysics, 115 Astronomy, Space science, Astrophysics - Astrophysics of Galaxies, [PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), clouds – dust [ISM], structure [ISM]
Abstract: 24 páginas, 8 figuras, 3 tablas.-- Planck Collaboration: et al., We perform a detailed investigation of sources from the Cold Cores Catalogue of Planck Objects (C3PO). Our goal is to probe the reliability of the detections, validate the separation between warm and cold dust emission components, provide the first glimpse at the nature, internal morphology and physical characterictics of the Planck-detected sources. We focus on a sub-sample of ten sources from the C3PO list, selected to sample different environments, from high latitude cirrus to nearby (150pc) and remote (2kpc) molecular complexes. We present Planck surface brightness maps and derive the dust temperature, emissivity spectral index, and column densities of the fields. With the help of higher resolution Herschel and AKARI continuum observations and molecular line data, we investigate the morphology of the sources and the properties of the substructures at scales below the Planck beam size. The cold clumps detected by Planck are found to be located on large-scale filamentary (or cometary) structures that extend up to 20pc in the remote sources. The thickness of these filaments ranges between 0.3 and 3pc, for column densities NH2 ~ 0.1 to 1.6 × 1022 cm-2, and with linear mass density covering a broad range, between 15 and 400 M⊙ pc-1. The dust temperatures are low (between 10 and 15K) and the Planck cold clumps correspond to local minima of the line-of-sight averaged dust temperature in these fields. These low temperatures are confirmed when AKARI and Herschel data are added to the spectral energy distributions. Herschel data reveal a wealth of substructure within the Planck cold clumps. In all cases (except two sources harbouring young stellar objects), the substructures are found to be colder, with temperatures as low as 7K. Molecular line observations provide gas column densities which are consistent with those inferred from the dust. The linewidths are all supra-thermal, providing large virial linear mass densities in the range 10 to 300 M⊙ pc-1, comparable within factors of a few, to the gas linear mass densities. The analysis of this small set of cold clumps already probes a broad variety of structures in the C3PO sample, probably associated with different evolutionary stages, from cold and starless clumps, to young protostellar objects still embedded in their cold surrounding cloud. Because of the all-sky coverage and its sensitivity, Planck is able to detect and locate the coldest spots in massive elongated structures that may be the long-searched for progenitors of stellar clusters., The Planck Collaboration acknowledges the support of: ESA; CNES and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MICINN and JA (Spain); Tekes, AoF and CSC (Finland); DLR and MPG (Germany); CSA (Canada); DTU Space (Denmark); SER/SSO (Switzerland); RCN (Norway); SFI (Ireland); FCT/MCTES (Portugal); and DEISA (EU).
Published: 2011

36. The origin of the X-ray-emitting plasma in the eastern edge of the Cygnus Loop

Author: Zhou, Xin., Bocchino, Fabrizio., Miceli, Marco., Orlando, Salvatore., Chen, Yang., Zhou, X., Bocchino, F., Miceli, M., Orlando, S., and Chen, Y.
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), ISM: cloud, Astrophysics::High Energy Astrophysical Phenomena, ISM: individual objects: G74.0-8.5, FOS: Physical sciences, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics::Galaxy Astrophysics, ISM: supernova remnant, X-rays: ISM, ISM: individual objects: Cygnus Loop
Abstract: The Cygnus Loop is interacting with a protrusion of the cavity wall in its eastern edge (the XA region), where the X-ray emission is very bright. The complexity of the environment and the non-linear physical processes of the shock-cloud interaction make the origin of the X-ray emission still not well understood. Our purpose is to understand the physical origin of the X-ray emission in the XA region, addressing, in particular, the role of thermal conduction in the interaction process. We analyzed two XMM-Newton data sets, performing image analysis and spatially resolved spectral analysis on a set of homogeneous regions. We applied a recently developed diagnostic tool to compare spectral analysis results with predictions of theoretical models, and to estimate the efficiency of thermal conduction on the X-ray emitting shocked plasma. We found that the inhomogeneous cavity wall contains both large clumps (the protrusion) and small isolated clumps with different densities. A large indentation bent over to the south is detected. The abundance of the surrounding ISM is ~0.2 times solar value. We confirmed the important role of thermal conduction in the evolution of X-ray emitting plasma during shock-cloud interaction., 7 pages, 5 figures, MNRAS in press
Published: 2010

37. Planck early results. XXII. The submillimetre properties of a sample of Galactic cold clumps

Author: Ade, P, Aghanim, N, Arnaud, M, Ashdown, M, Aumont, J, Baccigalupi, C, Balbi, A, Banday, A, Barreiro, R, Bartlett, J, Battaner, E, Benabed, K, Benoit, A, Bernard, J, Bersanelli, M, Bhatia, R, Bock, J, Bonaldi, A, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Bucher, M, Burigana, C, Cabella, P, Cantalupo, C, Cardoso, J, Catalano, A, Cayon, L, Challinor, A, Chamballu, A, Chiang, L, Christensen, P, Clements, D, Colombi, S, Couchot, F, Coulais, A, Crill, B, Cuttaia, F, Danese, L, Davies, R, De Bernardis, P, De Gasperis, G, De Rosa, A, De Zotti, G, Delabrouille, J, Delouis, J, Desert, F, Dickinson, C, Doi, Y, Donzelli, S, Dore, O, Dorl, U, Douspis, M, Dupac, X, Efstathiou, G, Ensslin, T, Falgarone, E, Finelli, F, Forni, O, Frailis, M, Franceschi, E, Galeotta, S, Ganga, K, Giard, M, Giardino, G, Giraud-Heraud, Y, Gonzalez-Nuevo, J, Gorski, K, Gratton, S, Gregorio, A, Gruppuso, A, Hansen, F, Harrison, D, Helou, G, Henrot-Versille, S, Herranz, D, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hovest, W, Hoyland, R, Huffenberger, K, Ikeda, N, Jaffe, A, Jones, W, Juvela, M, Keihanen, E, Keskitalo, R, Kisner, T, Kitamura, Y, Kneissl, R, Knox, L, Kurki-Suonio, H, Lagache, G, Lamarre, J, Lasenby, A, Laureijs, R, Lawrence, C, Leach, S, Leonardi, R, Leroy, C, Linden-Vornle, M, Lopez-Caniego, M, Lubin, P, MacIas-Perez, J, Mactavish, C, Maffei, B, Malinen, J, Mandolesi, N, Mann, R, Maris, M, Marshall, D, Martin, P, Martinez-Gonzalez, E, Masi, S, Matarrese, S, Matthai, F, Mazzotta, P, Mcgehee, P, Melchiorri, A, Mendes, L, Mennella, A, Meny, C, Mitra, S, Miville-Deschenes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Murphy, A, Naselsky, P, Nati, F, Natoli, P, Netterfield, C, Norgaard-Nielsen, H, Noviello, F, Novikov, D, Novikov, I, Osborne, S, Pagani, L, Pajot, F, Paladini, R, Pasian, F, Patanchon, G, Pelkonen, V, Perdereau, O, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Plaszczynski, S, Pointecouteau, E, Polenta, G, Ponthieu, N, Poutanen, T, Prezeau, G, Prunet, S, Puget, J, Reach, W, Rebolo, R, Reinecke, M, Renault, C, Ricciardi, S, Riller, T, Ristorcelli, I, Rocha, G, Rosset, C, Rowan-Robinson, M, Rubino-Martin, J, Rusholme, B, Sandri, M, Santos, D, Savini, G, Scott, D, Seiffert, M, Smoot, G, Starck, J, Stivoli, F, Stolyarov, V, Sudiwala, R, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Torre, J, Toth, V, Tristram, M, Tuovinen, J, Umana, G, Valenziano, L, Vielva, P, Villa, F, Vittorio, N, Wade, L, Wandelt, B, Ysard, N, Yvon, D, Zacchei, A, Zonca, A, Ade P. A. R., Aghanim N., Arnaud M., Ashdown M., Aumont J., Baccigalupi C., Balbi A., Banday A. J., Barreiro R. B., Bartlett J. G., Battaner E., Benabed K., Benoit A., Bernard J. -P., Bersanelli M., Bhatia R., Bock J. J., Bonaldi A., Bond J. R., Borrill J., Bouchet F. R., Boulanger F., Bucher M., Burigana C., Cabella P., Cantalupo C. M., Cardoso J. -F., Catalano A., Cayon L., Challinor A., Chamballu A., Chiang L. -Y., Christensen P. R., Clements D. L., Colombi S., Couchot F., Coulais A., Crill B. P., Cuttaia F., Danese L., Davies R. D., De Bernardis P., De Gasperis G., De Rosa A., De Zotti G., Delabrouille J., Delouis J. -M., Desert F. -X., Dickinson C., Doi Y., Donzelli S., Dore O., Dorl U., Douspis M., Dupac X., Efstathiou G., Ensslin T. A., Falgarone E., Finelli F., Forni O., Frailis M., Franceschi E., Galeotta S., Ganga K., Giard M., Giardino G., Giraud-Heraud Y., Gonzalez-Nuevo J., Gorski K. M., Gratton S., Gregorio A., Gruppuso A., Hansen F. K., Harrison D., Helou G., Henrot-Versille S., Herranz D., Hildebrandt S. R., Hivon E., Hobson M., Holmes W. A., Hovest W., Hoyland R. J., Huffenberger K. M., Ikeda N., Jaffe A. H., Jones W. C., Juvela M., Keihanen E., Keskitalo R., Kisner T. S., Kitamura Y., Kneissl R., Knox L., Kurki-Suonio H., Lagache G., Lamarre J. -M., Lasenby A., Laureijs R. J., Lawrence C. R., Leach S., Leonardi R., Leroy C., Linden-Vornle M., Lopez-Caniego M., Lubin P. M., MacIas-Perez J. F., MacTavish C. J., Maffei B., Malinen J., Mandolesi N., Mann R., Maris M., Marshall D. J., Martin P., Martinez-Gonzalez E., Masi S., Matarrese S., Matthai F., Mazzotta P., McGehee P., Melchiorri A., Mendes L., Mennella A., Meny C., Mitra S., Miville-Deschenes M. -A., Moneti A., Montier L., Morgante G., Mortlock D., Munshi D., Murphy A., Naselsky P., Nati F., Natoli P., Netterfield C. B., Norgaard-Nielsen H. U., Noviello F., Novikov D., Novikov I., Osborne S., Pagani L., Pajot F., Paladini R., Pasian F., Patanchon G., Pelkonen V. -M., Perdereau O., Perotto L., Perrotta F., Piacentini F., Piat M., Plaszczynski S., Pointecouteau E., Polenta G., Ponthieu N., Poutanen T., Prezeau G., Prunet S., Puget J. -L., Reach W. T., Rebolo R., Reinecke M., Renault C., Ricciardi S., Riller T., Ristorcelli I., Rocha G., Rosset C., Rowan-Robinson M., Rubino-Martin J. A., Rusholme B., Sandri M., Santos D., Savini G., Scott D., Seiffert M. D., Smoot G. F., Starck J. -L., Stivoli F., Stolyarov V., Sudiwala R., Sygnet J. -F., Tauber J. A., Terenzi L., Toffolatti L., Tomasi M., Torre J. -P., Toth V., Tristram M., Tuovinen J., Umana G., Valenziano L., Vielva P., Villa F., Vittorio N., Wade L. A., Wandelt B. D., Ysard N., Yvon D., Zacchei A., Zonca A., Ade, P, Aghanim, N, Arnaud, M, Ashdown, M, Aumont, J, Baccigalupi, C, Balbi, A, Banday, A, Barreiro, R, Bartlett, J, Battaner, E, Benabed, K, Benoit, A, Bernard, J, Bersanelli, M, Bhatia, R, Bock, J, Bonaldi, A, Bond, J, Borrill, J, Bouchet, F, Boulanger, F, Bucher, M, Burigana, C, Cabella, P, Cantalupo, C, Cardoso, J, Catalano, A, Cayon, L, Challinor, A, Chamballu, A, Chiang, L, Christensen, P, Clements, D, Colombi, S, Couchot, F, Coulais, A, Crill, B, Cuttaia, F, Danese, L, Davies, R, De Bernardis, P, De Gasperis, G, De Rosa, A, De Zotti, G, Delabrouille, J, Delouis, J, Desert, F, Dickinson, C, Doi, Y, Donzelli, S, Dore, O, Dorl, U, Douspis, M, Dupac, X, Efstathiou, G, Ensslin, T, Falgarone, E, Finelli, F, Forni, O, Frailis, M, Franceschi, E, Galeotta, S, Ganga, K, Giard, M, Giardino, G, Giraud-Heraud, Y, Gonzalez-Nuevo, J, Gorski, K, Gratton, S, Gregorio, A, Gruppuso, A, Hansen, F, Harrison, D, Helou, G, Henrot-Versille, S, Herranz, D, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hovest, W, Hoyland, R, Huffenberger, K, Ikeda, N, Jaffe, A, Jones, W, Juvela, M, Keihanen, E, Keskitalo, R, Kisner, T, Kitamura, Y, Kneissl, R, Knox, L, Kurki-Suonio, H, Lagache, G, Lamarre, J, Lasenby, A, Laureijs, R, Lawrence, C, Leach, S, Leonardi, R, Leroy, C, Linden-Vornle, M, Lopez-Caniego, M, Lubin, P, MacIas-Perez, J, Mactavish, C, Maffei, B, Malinen, J, Mandolesi, N, Mann, R, Maris, M, Marshall, D, Martin, P, Martinez-Gonzalez, E, Masi, S, Matarrese, S, Matthai, F, Mazzotta, P, Mcgehee, P, Melchiorri, A, Mendes, L, Mennella, A, Meny, C, Mitra, S, Miville-Deschenes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Murphy, A, Naselsky, P, Nati, F, Natoli, P, Netterfield, C, Norgaard-Nielsen, H, Noviello, F, Novikov, D, Novikov, I, Osborne, S, Pagani, L, Pajot, F, Paladini, R, Pasian, F, Patanchon, G, Pelkonen, V, Perdereau, O, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Plaszczynski, S, Pointecouteau, E, Polenta, G, Ponthieu, N, Poutanen, T, Prezeau, G, Prunet, S, Puget, J, Reach, W, Rebolo, R, Reinecke, M, Renault, C, Ricciardi, S, Riller, T, Ristorcelli, I, Rocha, G, Rosset, C, Rowan-Robinson, M, Rubino-Martin, J, Rusholme, B, Sandri, M, Santos, D, Savini, G, Scott, D, Seiffert, M, Smoot, G, Starck, J, Stivoli, F, Stolyarov, V, Sudiwala, R, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Torre, J, Toth, V, Tristram, M, Tuovinen, J, Umana, G, Valenziano, L, Vielva, P, Villa, F, Vittorio, N, Wade, L, Wandelt, B, Ysard, N, Yvon, D, Zacchei, A, Zonca, A, Ade P. A. R., Aghanim N., Arnaud M., Ashdown M., Aumont J., Baccigalupi C., Balbi A., Banday A. J., Barreiro R. B., Bartlett J. G., Battaner E., Benabed K., Benoit A., Bernard J. -P., Bersanelli M., Bhatia R., Bock J. J., Bonaldi A., Bond J. R., Borrill J., Bouchet F. R., Boulanger F., Bucher M., Burigana C., Cabella P., Cantalupo C. M., Cardoso J. -F., Catalano A., Cayon L., Challinor A., Chamballu A., Chiang L. -Y., Christensen P. R., Clements D. L., Colombi S., Couchot F., Coulais A., Crill B. P., Cuttaia F., Danese L., Davies R. D., De Bernardis P., De Gasperis G., De Rosa A., De Zotti G., Delabrouille J., Delouis J. -M., Desert F. -X., Dickinson C., Doi Y., Donzelli S., Dore O., Dorl U., Douspis M., Dupac X., Efstathiou G., Ensslin T. A., Falgarone E., Finelli F., Forni O., Frailis M., Franceschi E., Galeotta S., Ganga K., Giard M., Giardino G., Giraud-Heraud Y., Gonzalez-Nuevo J., Gorski K. M., Gratton S., Gregorio A., Gruppuso A., Hansen F. K., Harrison D., Helou G., Henrot-Versille S., Herranz D., Hildebrandt S. R., Hivon E., Hobson M., Holmes W. A., Hovest W., Hoyland R. J., Huffenberger K. M., Ikeda N., Jaffe A. H., Jones W. C., Juvela M., Keihanen E., Keskitalo R., Kisner T. S., Kitamura Y., Kneissl R., Knox L., Kurki-Suonio H., Lagache G., Lamarre J. -M., Lasenby A., Laureijs R. J., Lawrence C. R., Leach S., Leonardi R., Leroy C., Linden-Vornle M., Lopez-Caniego M., Lubin P. M., MacIas-Perez J. F., MacTavish C. J., Maffei B., Malinen J., Mandolesi N., Mann R., Maris M., Marshall D. J., Martin P., Martinez-Gonzalez E., Masi S., Matarrese S., Matthai F., Mazzotta P., McGehee P., Melchiorri A., Mendes L., Mennella A., Meny C., Mitra S., Miville-Deschenes M. -A., Moneti A., Montier L., Morgante G., Mortlock D., Munshi D., Murphy A., Naselsky P., Nati F., Natoli P., Netterfield C. B., Norgaard-Nielsen H. U., Noviello F., Novikov D., Novikov I., Osborne S., Pagani L., Pajot F., Paladini R., Pasian F., Patanchon G., Pelkonen V. -M., Perdereau O., Perotto L., Perrotta F., Piacentini F., Piat M., Plaszczynski S., Pointecouteau E., Polenta G., Ponthieu N., Poutanen T., Prezeau G., Prunet S., Puget J. -L., Reach W. T., Rebolo R., Reinecke M., Renault C., Ricciardi S., Riller T., Ristorcelli I., Rocha G., Rosset C., Rowan-Robinson M., Rubino-Martin J. A., Rusholme B., Sandri M., Santos D., Savini G., Scott D., Seiffert M. D., Smoot G. F., Starck J. -L., Stivoli F., Stolyarov V., Sudiwala R., Sygnet J. -F., Tauber J. A., Terenzi L., Toffolatti L., Tomasi M., Torre J. -P., Toth V., Tristram M., Tuovinen J., Umana G., Valenziano L., Vielva P., Villa F., Vittorio N., Wade L. A., Wandelt B. D., Ysard N., Yvon D., Zacchei A., and Zonca A.
Abstract: We perform a detailed investigation of sources from the Cold Cores Catalogue of Planck Objects (C3PO). Our goal is to probe the reliability of the detections, validate the separation between warm and cold dust emission components, provide the first glimpse at the nature, internal morphology and physical characterictics of the Planck-detected sources. We focus on a sub-sample of ten sources from the C3PO list, selected to sample different environments, from high latitude cirrus to nearby (150pc) and remote (2kpc) molecular complexes. We present Planck surface brightness maps and derive the dust temperature, emissivity spectral index, and column densities of the fields. With the help of higher resolution Herschel and AKARI continuum observations and molecular line data, we investigate the morphology of the sources and the properties of the substructures at scales below the Planck beam size. The cold clumps detected by Planck are found to be located on large-scale filamentary (or cometary) structures that extend up to 20pc in the remote sources. The thickness of these filaments ranges between 0.3 and 3pc, for column densities NH2 ~ 0.1 to 1.6 × 1022 cm-2, and with linear mass density covering a broad range, between 15 and 400 M pc -1. The dust temperatures are low (between 10 and 15K) and the Planck cold clumps correspond to local minima of the line-of-sight averaged dust temperature in these fields. These low temperatures are confirmed when AKARI and Herschel data are added to the spectral energy distributions. Herschel data reveal a wealth of substructure within the Planck cold clumps. In all cases (except two sources harbouring young stellar objects), the substructures are found to be colder, with temperatures as low as 7K. Molecular line observations provide gas column densities which are consistent with those inferred from the dust. The linewidths are all supra-thermal, providing large virial linear mass densities in the range 10 to 300 M pc-1, comparable within f
Published: 2011

38. Shock-cloud interaction in the Vela SNR observed with XMM-Newton

Author: Antonio Maggio, Marco Miceli, Fabio Reale, Fabrizio Bocchino, Miceli, M., Bocchino, F., Maggio, A., and Reale, F.
Subjects: Physics, Line-of-sight, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), FOS: Physical sciences, Astronomy and Astrophysics, Cloud computing, Astrophysics, EPIC, Vela, X-rays: ISM, Knot (unit), ISM: individual objects: Vela SNR, Space and Planetary Science, ISM: cloud, ISM: kinematics and dynamic, business, Image resolution, ISM: supernova remnant, Astrophysics::Galaxy Astrophysics
Abstract: We analyzed an XMM-Newton EPIC observation of a bright knot, named FilD, in the northern rim of the Vela SNR, where the shock has encountered a cloud. The good combination of sensitivity, spectral, and spatial resolution allowed us to describe the internal structure of the observed ISM clouds and to obtain estimates of their temperature, density, O, Ne, and Fe abundances, and of their extension along the line of sight. We also examined the interaction of the shock with the FilD knot and estimated that the time elapsed from the shock impact is about one cloud crushing time. Our analysis allowed us to conclude that the observed X-ray emission is best explained by the propagation of transmitted shocks through ISM inhomogeneities with an inward increasing density profile. We found that the interaction with the shock determines the heating of the inner part of the clouds and the evaporation of the outer part., To be published in A&A. Received 27 August 2004 / accepted 8 June 2005 For the complete version of the paper, with all the figures included, please see http://www.astropa.unipa.it/Library/preprint.html
Published: 2005

39. Observability and diagnostics in the X-ray band of shock-cloud interactions in supernova remnants

Author: Giovanni Peres, Salvatore Orlando, Fabrizio Bocchino, Fabio Reale, Xin Zhou, Marco Miceli, Orlando, S., Bocchino, F., Miceli, M., Zhou, X., Reale, F., and Peres, G.
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), Shock wave, Physics, Cygnus Loop, Radiative cooling, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astronomy and Astrophysics, Hydrodynamic, Thermal conduction, Vela, X-rays: ISM, Computational physics, Shock (mechanics), Supernova, ISM: cloud, Space and Planetary Science, Density contrast, Astrophysics - High Energy Astrophysical Phenomena, ISM: supernova remnant, Astrophysics::Galaxy Astrophysics
Abstract: X-ray emitting features originating from the interaction of supernova shock waves with small interstellar gas clouds are revealed in many X-ray observations of evolved supernova remnants (e.g. Cygnus Loop and Vela), but their interpretation is not straightforward. We develop a self-consistent method for the analysis and interpretation of shock-cloud interactions in middle-aged supernova remnants, which can provide the key parameters of the system and the role of relevant physical effects like the thermal conduction, without the need to run ad-hoc numerical simulations and to bother of morphology details. We explore all the possible values of the shock speed and cloud density contrast relevant to middle-aged SNRs with a set of hydrodynamic simulations of shock-cloud interaction, including the effects of thermal conduction and radiative cooling. From the simulations, we synthesize spatially and spectrally resolved focal-plane data as they would be collected with XMM-Newton/EPIC, an X-ray instrument commonly used in these studies. We devise and tune up two diagnostic tools, the first based on the mean-photon energy vs. count rate scatter plot and the second on the spectral analysis of the interaction region, that can be used to highlight the effects of thermal conduction and to derive the shock speed in case of efficient conduction at work. These tools can be used to ascertain information from X-ray observations, without the need to develop detailed and ad-hoc numerical models for the interpretation of the data., Comment: 9 pages, 7 Figures; accepted for publication on A&A. Version with full resolution images can be found at http://www.astropa.unipa.it/~orlando/PREPRINTS/sorlando_13801.pdf
Published: 2010

40. Shaping the structure of a GMC with radiation and winds

Author: D Decataldo, A Lupi, A Ferrara, A Pallottini, M Fumagalli, Decataldo, D, Lupi, A, Ferrara, A, Pallottini, A, and Fumagalli, M
Subjects: 010308 nuclear & particles physics, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, ISM: clouds, 01 natural sciences, 7. Clean energy, Astrophysics - Astrophysics of Galaxies, methods: numerical, ISM: evolution, Settore FIS/05 - Astronomia e Astrofisica, 13. Climate action, Space and Planetary Science, ISM: cloud, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: We study the effect of stellar feedback (photodissociation/ionization, radiation pressure and winds) on the evolution of a Giant Molecular Cloud (GMC), by means of a 3D radiative transfer, hydro-simulation implementing a complex chemical network featuring ${\rm H}_2$ formation and destruction. We track the formation of individual stars with mass $M>1\,{\rm M}_\odot$ with a stochastic recipe. Each star emits radiation according to its spectrum, sampled with 10 photon bins from near-infrared to extreme ultra-violet bands; winds are implemented by energy injection in the neighbouring cells. We run a simulation of a GMC with mass $M=10^5\,{\rm M}_\odot$, following the evolution of different gas phases. Thanks to the simultaneous inclusion of different stellar feedback mechanisms, we identify two stages in the cloud evolution: (1) radiation and winds carve ionized, low-density bubbles around massive stars, while FUV radiation dissociates most ${\rm H}_2$ in the cloud, apart from dense, self-shielded clumps; (2) rapid star formation (SFR$\simeq 0.1\,{\rm M}_\odot\,{\rm yr}^{-1}$) consumes molecular gas in the dense clumps, so that UV radiation escapes and ionizes the remaining HI gas in the GMC. ${\rm H}_2$ is exhausted in $1.6$ Myr, yielding a final star formation efficiency of 36 per cent. The average intensity of FUV and ionizing fields increases almost steadily with time; by the end of the simulation ($t=2.5$ Myr) we find $\langle G_0 \rangle \simeq 10^3$ (in Habing units), and a ionization parameter $\langle U_{\rm ion} \rangle \simeq 10^2$, respectively. The ionization field has also a more patchy distribution than the FUV one within the GMC. Throughout the evolution, the escape fraction of ionizing photons from the cloud is $f_{\rm ion, esc} < 0.03$., 16 pages, 12 figures
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