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513 results on '"Spire"'

501. Herschel SPIRE FTS spectral line source calibrators

Author

Locke D. Spencer, Nanyao Lu, Bruce Swinyard, Ivan Valtchanov, Nicola Marchili, Edward Polehampton, Trevor Fulton, David A. Naylor, Gibion Makiwa, Matthijs H. D. van der Wiel, and Rosalind Hopwood

Subjects
Physics, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, Repeatability, Planetary nebula, Spectral line, Spire, Stars, Calibration, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics, Line (formation)
Abstract

We present a summary of the Herschel SPIRE/FTS calibration programme to monitor the repeatability of spectral lines. Observations of planetary nebulae and post-AGB stars are used to assess repeatability and model the asymmetry of the instrument line shape.

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502. Determination of the beam profile for the herschel-SPIRE imaging fourier transform spectrometer

Author

Edward Polehampton, David A. Naylor, Marc Ferlet, Matthijs H. D. van der Wiel, Gibion Makiwa, Carl Salji, and Bruce Swinyard

Subjects
Physics::Physics and Society, Physics, medicine.medical_specialty, Physics::Instrumentation and Detectors, business.industry, Bolometer, Astrophysics::Instrumentation and Methods for Astrophysics, Imaging spectrometer, Astrophysics::Cosmology and Extragalactic Astrophysics, Fourier transform spectroscopy, Spectral imaging, law.invention, Spire, Imaging spectroscopy, Optics, law, medicine, Fourier transform infrared spectroscopy, business, Astrophysics::Galaxy Astrophysics, Beam (structure)
Abstract

The Herschel-SPIRE imaging Fourier Transform Spectrometer employs feed-horn coupled bolometers to provide imaging spectroscopy. We discuss the wavelength dependent beam of the individual SPIRE FTS detectors.

503. A herschel study of the properties of starless cores in the Polaris Flare dark cloud region using PACS and SPIRE

Author

Matthew Joseph Griffin, Paolo Saraceno, A. Di Giorgio, Stefano Pezzuto, Vincent Minier, Nicola Schneider, D. Russeil, Derek Ward-Thompson, Jason M. Kirk, L. Spinoglio, Alain Abergel, Sylvain Bontemps, Sergio Molinari, Peter Charles Hargrave, Maohai Huang, Jin-Zeng Li, C. D. Wilson, Alexander Men'shchikov, P. Didelon, Göran Olofsson, J.-P. Baluteau, Peter Martin, Glenn J. White, Ph. André, J. Di Francesco, Vera Könyves, Pierre Cox, Annie Zavagno, Bruce Sibthorpe, Frédérique Motte, L. Cambrésy, Adam Woodcraft, J.-Ph. Bernard, Marc Sauvage, Leonardo Testi, School of Physics and Astronomy [Cardiff], Cardiff University, Laboratoire d'Informatique de Nantes Atlantique (LINA), Centre National de la Recherche Scientifique (CNRS)-Mines Nantes (Mines Nantes)-Université de Nantes (UN), Istituto di Fisica dello Spazio Interplanetario (IFSI), Consiglio Nazionale delle Ricerche (CNR), 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 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 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), Centre d'étude spatiale des rayonnements (CESR), 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), Université Fédérale Toulouse Midi-Pyrénées, Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1, Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB), Herzberg Institute of Astrophysics, National Research Council of Canada (NRC), National Astronomical Observatories [Beijing] (NAOC), Chinese Academy of Sciences [Beijing] (CAS), CITA, University of Toronto, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Stockholm University, Royal Observatory Edinburgh (ROE), University of Edinburgh, Antarctic Research a European Network for Astrophysics (ARENA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), European Southern Observatory (ESO), STFC Rutherford Appleton Laboratory (RAL), Science and Technology Facilities Council (STFC), University of Exeter, Observatoire Astronomique de Marseille Provence (OAMP), Université de Provence - Aix-Marseille 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), 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 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), 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 Toulouse III - Paul Sabatier (UT3), 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 Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, 010308 nuclear & particles physics, [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], Astrophysics - Astrophysics of Galaxies, 01 natural sciences, Declination, Virial theorem, Latitude, law.invention, Spire, Polaris, Space and Planetary Science, law, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Density analysis, Cirrus, 010303 astronomy & astrophysics, Flare, QB
Abstract

The Polaris Flare cloud region contains a great deal of extended emission. It is at high declination and high Galactic latitude. It was previously seen strongly in IRAS Cirrus emission at 100 microns. We have detected it with both PACS and SPIRE on Herschel. We see filamentary and low-level structure. We identify the five densest cores within this structure. We present the results of a temperature, mass and density analysis of these cores. We compare their observed masses to their virial masses, and see that in all cases the observed masses lie close to the lower end of the range of estimated virial masses. Therefore, we cannot say whether they are gravitationally bound prestellar cores. Nevertheless, these are the best candidates to be potentialprestellar cores in the Polaris cloud region., 5 pages, 2 figures, accepted by A&A

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504. The spitzer data fusion: Contents, construction and applications to galaxy evolution studies

Author

Mattia Vaccari

Subjects
Continuum (design consultancy), Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, Sensor fusion, Astrophysics - Astrophysics of Galaxies, Redshift, Spire, Astrophysics of Galaxies (astro-ph.GA), Galaxy formation and evolution, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics, Geology
Abstract

We present the Spitzer Data Fusion, a database incorporating far-ultraviolet to far-infrared flux measurements as well as photometric and spectroscopic redshifts for 4.4 million IRAC-selected sources detected over 8 extragalactic fields covering 65 deg$^2$ observed by Spitzer in all IRAC and MIPS bands during its cryogenic mission. Deeper Spitzer observations carried out during its warm mission over 5 sub-fields as part of the SERVS project are also presented and analysed in a similar fashion, detecting 2.8 million IRAC-selected sources over 18 deg$^2$ and merging them with multi-wavelength catalogues within the SERVS Data Fusion. When combined with Herschel SPIRE surveys and radio continuum observations over the same fields, the Spitzer Data Fusion and the SERVS Data Fusion provide an invaluable resource for multi-wavelength galaxy formation and evolution studies at infrared/millimetre/radio wavelengths. The catalogues and their future updates will be released at http://www.mattiavaccari.net/df/ and on CDS/VizieR., 11 pages, 1 figure, to be published in the proceedings of the conference "The Many Facets of Extragalactic Radio Surveys: Towards New Scientific Challenges", Bologna 20-23, 2015 - Published version available at http://pos.sissa.it/archive/conferences/267/027/EXTRA-RADSUR2015_027.pdf - The Spitzer Data Fusion Web page is at http://www.mattiavaccari.net/df/

505. Coordinated recruitment of Spir actin nucleators and myosin V motors to Rab11 vesicle membranes

Author

Andreas T. Grasskamp, Martin Kollmar, Janine Tittel, Margaret A. Titus, Petra Schwille, Eugen Kerkhoff, Florian Chardon, Bruno Goud, Thomas Weidemann, Gilles Malherbe, Olena Pylypenko, Annette Samol-Wolf, Bruno Baron, Patrick England, Carina Ida Luise Michel, Sabine Weiss, Alistair N. Hume, Anne Houdusse, Tobias Welz, Biologie Cellulaire et Cancer, Institut Curie [Paris]-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), University Hospital Regensburg, Max-Planck-Institut für Biochemie = Max Planck Institute of Biochemistry (MPIB), Max-Planck-Gesellschaft, Max-Planck-Institut für Biophysikalische Chemie - Max Planck Institute for Biophysical Chemistry [Göttingen], Motilité structurale, Compartimentation et dynamique cellulaires (CDC), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut Curie [Paris]-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut Curie [Paris]-Centre National de la Recherche Scientifique (CNRS), University of Nottingham, UK (UON), Biophysique des macromolécules et leurs interactions, Institut Pasteur [Paris] (IP)-Centre National de la Recherche Scientifique (CNRS), University of Minnesota [Twin Cities] (UMN), University of Minnesota System, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut Curie [Paris]-Centre National de la Recherche Scientifique (CNRS), This paper was supported by the following grants:Centre National de la Recherche Scientifique to Anne Houdusse, Olena Pylypenko., Deutsche Forschungsgemeinschaft SPP 1464: KO 2251/13-1 to Martin Kollmar., Bayerische Forschungsstiftung WFKMS Nr. F2 - 5121.4.3.1 ‐10c (BayGene) to Eugen Kerkhoff., Fondation de la Recherche Medicale ING20140129255 to Anne Houdusse., Agence Nationale de la Recherche ANR-13-BSV8-0019-01 to Anne Houdusse., National Science Foundation MCB-1244235 to Margaret A Titus., University of Minnesota Medical School Award, E-0915-04 to Margaret A Titus., Deutsche Forschungsgemeinschaft SPP 1464: SCHW 716/11-1, -2 to Petra Schwille., Ligue Contre le Cancer RS16/75-67 to Anne Houdusse., Fondation ARC pour la Recherche sur le Cancer SFI20121205398 to Anne Houdusse., Deutsche Forschungsgemeinschaft SPP 1464: KE 447/10-1, -2 to Eugen Kerkhoff., We acknowledge SOLEIL for provision of synchrotron radiation facilities (proposal 20141015) and we would like to thank Pierre Legrand and Beatriz Guimares for assistance in using beamline PX1. We thank Sandra Lemke, Carsten Grashoff, Yilmaz Niyaz (Zeiss) and Volker Buschmann (Picoquant) for their generous support in FLIM. We thank Mitsuo Ikebe for providing a MyoVb cDNA. We acknowledge Wikayatou Attanda and Charles Gauquelin for support in recombinant protein production. We also acknowledge Damarys Loew and Vanessa Masson (Curie Institute Protein Mass Spectrometry Platform) for the peptide fingerprint analysis of Spir-2 constructs. BG, AHo, OP, GM, FC are part of the Labex CelTisPhyBio 11-LBX-0038, which is part of the IDEX PSL (ANR-10-IDEX-0001-02 PSL)., Max Planck Institute of Biochemistry (MPIB), Centre National de la Recherche Scientifique (CNRS)-Institut Curie [Paris]-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut Curie [Paris]-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut Pasteur [Paris], and Centre National de la Recherche Scientifique (CNRS)-Institut Curie [Paris]-Université Pierre et Marie Curie - Paris 6 (UPMC)

Subjects
0301 basic medicine, Models, Molecular, Protein Conformation, none, [SDV]Life Sciences [q-bio], Arp2/3 complex, Microfilament, Crystallography, X-Ray, vesicle transport, Myosin head, Mice, 0302 clinical medicine, MESH: Protein Conformation, biophysics, Myosin, cell biology, structural biology, MESH: Animals, Biology (General), Actin nucleation, MESH: Protein Multimerization, General Neuroscience, Microfilament Proteins, General Medicine, Biophysics and Structural Biology, MESH: rab GTP-Binding Proteins/chemistry, Cell biology, MESH: rab GTP-Binding Proteins/metabolism, Medicine, MESH: Cytoplasmic Vesicles/metabolism, MESH: Membranes/metabolism, MESH: Models, Molecular, Research Article, Protein Binding, Myosin light-chain kinase, QH301-705.5, Science, Myosin Type V, MESH: Microfilament Proteins/chemistry, MESH: Microfilament Proteins/metabolism, macromolecular substances, Biology, General Biochemistry, Genetics and Molecular Biology, actin motor proteins, 03 medical and health sciences, MESH: Myosin Type V/metabolism, Animals, MESH: Protein Binding, Actin-binding protein, MESH: Mice, MESH: Myosin Type V/chemistry, Membranes, Spire, General Immunology and Microbiology, Cytoplasmic Vesicles, myosin V, Actin remodeling, MESH: Crystallography, X-Ray, 030104 developmental biology, rab GTP-Binding Proteins, Rab11, biology.protein, Protein Multimerization, actin nucleation, 030217 neurology & neurosurgery
Abstract

There is growing evidence for a coupling of actin assembly and myosin motor activity in cells. However, mechanisms for recruitment of actin nucleators and motors on specific membrane compartments remain unclear. Here we report how Spir actin nucleators and myosin V motors coordinate their specific membrane recruitment. The myosin V globular tail domain (MyoV-GTD) interacts directly with an evolutionarily conserved Spir sequence motif. We determined crystal structures of MyoVa-GTD bound either to the Spir-2 motif or to Rab11 and show that a Spir-2:MyoVa:Rab11 complex can form. The ternary complex architecture explains how Rab11 vesicles support coordinated F-actin nucleation and myosin force generation for vesicle transport and tethering. New insights are also provided into how myosin activation can be coupled with the generation of actin tracks. Since MyoV binds several Rab GTPases, synchronized nucleator and motor targeting could provide a common mechanism to control force generation and motility in different cellular processes. DOI: http://dx.doi.org/10.7554/eLife.17523.001

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506. Herschel SPIRE FTS data processing of partially extended sources

Author

David A. Naylor, Nanyao Lu, Locke D. Spencer, Trevor Fulton, Jeremy Zaretski, Bruce Swinyard, Ronin Wu, Edward Polehampton, Matthijs H. D. van der Wiel, Nicola Marchili, Ivan Valtchanov, Rosalind Hopwood, and Gibion Makiwa

Subjects
Physics, Data processing, medicine.medical_specialty, Pipeline (computing), Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, Spectral imaging, Beam size, Spire, Interactive processing, medicine, Beam shaping, Astrophysics::Galaxy Astrophysics
Abstract

The Herschel SPIRE imaging FTS pipeline processing assumed either point-like or uniformly extended emission. This paper describes the interactive processing required to correct partially extended sources to account for the changing beam size with frequency.

507. Analysis tools for single-monomer measurements of self-assembly processes

Author

Maria Hoyer, Alvaro H. Crevenna, Radoslaw Kitel, Kherim Willems, Miroslawa Czub, Grzegorz Dubin, Pol Van Dorpe, Tad A. Holak, and Don C. Lamb

Subjects
Multidisciplinary, Science & Technology, PHASE, Microfilament Proteins, FOS: Physical sciences, ASSOCIATION, Actins, Polymerization, MODE WAVE-GUIDES, MECHANISMS, Multidisciplinary Sciences, Actin Cytoskeleton, POLYMERIZATION, ACTIN NUCLEATION, SPIRE, Biological Physics (physics.bio-ph), Science & Technology - Other Topics, STEPS, Physics - Biological Physics, KINETICS
Abstract

Protein assembly plays an important role throughout all phyla of life, both physiologically and pathologically. In particular, aggregation and polymerization of proteins are key-strategies that regulate cellular function. In recent years, methods to experimentally study the assembly process on a single-molecule level have been developed. This progress concomitantly has triggered the question of how to analyze this type of single-filament data adequately and what experimental conditions are necessary to allow a meaningful interpretation of the analysis. Here, we developed two analysis methods for single-filament data: the visitation analysis and the average-rate analysis. We benchmarked and compared both approaches with the classic dwell-time-analysis frequently used to study microscopic association and dissociation rates. In particular, we tested the limitations of each analysis method along the lines of the signal-to-noise ratio, the sampling rate, and the labeling efficiency and bleaching rate of the fluorescent dyes used in single-molecule fluorescence experiments. Finally, we applied our newly developed methods to study the monomer assembly of actin at the single-molecule-level in the presence of the class II nucleator Cappuccino and the WH2 repeats of Spire. For Cappuccino, our data indicated fast elongation circumventing a nucleation phase whereas, for Spire, we found that the four WH2 motifs are not sufficient to promote de novo nucleation of actin. ispartof: SCIENTIFIC REPORTS vol:12 issue:1 ispartof: location:England status: published

508. Books open on debut Spire CLO.

Author

Sanderson, Owen

Subjects
COLLATERALIZED loan obligations
Abstract

Books are open on Spire Partners' debut European CLO, with initial price thoughts 5bp wider than where Carlyle priced its market-opening Carlyle Global Markets Strategies Europe 2015-1 deal last week. [ABSTRACT FROM AUTHOR]

Published
2015

509. Carlyle pips Spire to tightening CLO market.

Author

Porter, Tom

Subjects
COLLATERALIZED loan obligations, ASSET backed financing, INVESTORS, BANKING industry
Abstract

Carlyle has won the race to print the first European collateralised loan obligation (CLO) transaction of the year, pricing its latest deal on Tuesday. Both primary and secondary CLO markets in Europe are busy, according to bankers, who are seeing investor resources being redirected to the higher yielding asset class. [ABSTRACT FROM AUTHOR]

Published
2015

510. Updates About Construction Professionals.

Author

Blair, Scott

Subjects
*CONSTRUCTION industry, *CONSTRUCTION industry personnel
Abstract

The article announces several appointments in the construction industry of California as of December 2014 including Howard Blackson as senior urban designer with Michael Baker International, Todd Cozolino as associate principal with Spire Consulting Group and Dave Jenkins as vice president of AGC.

Published
2014

511. The analysis of SPIRE measurements of atmospheric limb CO2(ν2) fluorescence

Author

R. M. Nadile, G. E. Caledonia, and B. D. Green

Subjects
Atmospheric Science, Materials science, Infrared, Soil Science, Aquatic Science, Radiation, Oceanography, Altitude, Optics, Geochemistry and Petrology, Earth and Planetary Sciences (miscellaneous), Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Galaxy Astrophysics, Physics::Atmospheric and Oceanic Physics, Earth-Surface Processes, Water Science and Technology, Remote sensing, Spectral signature, Ecology, business.industry, Paleontology, Forestry, Spire, Geophysics, Space and Planetary Science, Excited state, Atmospheric chemistry, Radiance, Astrophysics::Earth and Planetary Astrophysics, business
Abstract

Spectrally resolved, infrared limb emission measurements of upper atmospheric CO2(ν2) band radiation have been analyzed to determine altitude profiles of excited state densities and rotational temperatures.

Published
1985
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512. A Restoration Study of the Southwest Tower at Chartres

Author

Kenneth John Conant

Subjects
Cultural Studies, History, Literature and Literary Theory, Visual Arts and Performing Arts, Visitor pattern, Religious studies, Art history, Nave, Short distance, Philosophy, Spire, Plane (esotericism), Invention, Tower, Front (military)
Abstract

No VISITOR or student of Chartres fails to admire the sturdy old southwest tower of the cathedral, but the satisfaction of the more discerning is somewhat diminished by the way in which the nave shoulders and crowds against it on the northern side. We should know, even if we had not explicit evidence,' that it was designed for a smaller building. The two western towers were, in fact, planned to stand a short distance in front of a spacious basilica dating from 1020 and 1031. The north tower, begun about 1134, is the earlier, but by 1150 both towers had reached the second story level; about 1145 a new fagade for the church was undertaken. This was set deep in the recess between the towers, and included the celebrated Royal Portal. Construction continued on the south tower, which was completed about 1190. Meanwhile the church had been lengthened by relocating the fagade at the front plane of the towers. All of this later work survived the "wonderful and miserable fire" of 1194, which reduced the church proper to ruins and was the occasion for the building of the existing structure. It was my purpose in making the drawing presented here to show what the appearance of the cathedral might be, had the old basilica with its west front of 1145 come down to us, and in particular to show how magnificent was the profile of the southwest tower when it still stood free. The north spire is an invention, merely representing, more or less, what must have been in the mind of the designer of the other; the drawing of the basilica is as non-committal as possible, owing to the limited data, and it must be confessed that two eleventh-century belfries of uncertain location do not appear; but after all, the purpose of the picture is to show the unsurpassed loveliness of the old spire. KENNETH JOHN CONANT, Harvard University.

Published
1927
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513. Far-infrared observations of a massive cluster forming in the Monoceros R2 filament hub

Author

Álvaro Sánchez-Monge, Kate Pattle, J. Di Francesco, J. P. Bernard, Matthew Joseph Griffin, Martin Hennemann, Stefano Pezzuto, T. Rayner, Sylvain Bontemps, Kenneth A. Marsh, Milena Benedettini, J. Tigé, Alana Rivera-Ingraham, Derek Ward-Thompson, Q. Nguyen Luong, Davide Elia, Asunción Fuente, Kazi L.J. Rygl, T. Hill, L. Spinoglio, Glenn J. White, Ph. André, Nicola Schneider, Jason M. Kirk, A. Roy, P. Didelon, Alexander Men'shchikov, L. D. Anderson, Frédérique Motte, S. P. Treviño-Morales, Nicolas Peretto, V. Könyves, School of Physics and Astronomy [Cardiff], Cardiff University, 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), IAS / CNRS / Universite Paris XI, Herzberg Institute of Astrophysics, National Research Council of Canada (NRC), 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), Istituto Nazionale di Astrofisica (INAF), Centre d'étude spatiale des rayonnements (CESR), Université Toulouse III - Paul Sabatier (UT3), 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), FORMATION STELLAIRE 2017, Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Observatorio Astronomico Nacional, Madrid, Institute of Hydrology, Canadian Institute for Theoretical Astrophysics (CITA), Istituto di Fisica dello Spazio Interplanetario (IFSI), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Institut de recherche en astrophysique et planétologie (IRAP), INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto di Astrofisica e Planetologia Spaziali - INAF (IAPS), Instituto de Radio Astronomía Milimétrica, 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), 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), 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), Université Fédérale Toulouse Midi-Pyrénées, Observatorio Astronómico Nacional (OAN), oan, Consiglio Nazionale delle Ricerche (CNR), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-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)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), ITA, GBR, FRA, ESP, CAN, CHL, KOR, National Astronomical Observatory of China, Commissariat à l'Ènergie Atomique et aux Ènergies Alternatives (France), Centre National D'Etudes Spatiales (France), Centre National de la Recherche Scientifique (France), Agenzia Spaziale Italiana, UK Space Agency, National Aeronautics and Space Administration (US), Swedish National Space Agency, Science and Technology Facilities Council (UK), Federal Ministry for Transport, Innovation and Technology (Austria), German Centre for Air and Space Travel, European Space Agency, National Science Foundation (US), Canada Foundation for Innovation, Agence Nationale de la Recherche (France), German Research Foundation, Canadian Space Agency, Ministerio de Economía y Competitividad (España), European Research Council, Ministerio de Ciencia e Innovación (España), 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), and School of Physics and Astronomy

Subjects
HII regions, ISM: individual objects: Mon R2, Young stellar object, ISM: structure, Extinction (astronomy), FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, F500, 01 natural sciences, Article, law.invention, Telescope, individual objects: Mon R2 [ISM], Far infrared, law, protostars [Stars], 0103 physical sciences, Protostar, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Dust, extinction, formation [Stars], QC, Astrophysics::Galaxy Astrophysics, QB, Physics, stars: formation, stars: protostars, 010308 nuclear & particles physics, Star formation, extinction, Molecular cloud, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Spire, 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), dust, extinction, Astrophysics::Earth and Planetary Astrophysics, dust, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], structure [ISM]
Abstract

We present far-infrared observations of Monoceros R2 (a giant molecular cloud at approximately 830 pc distance, containing several sites of active star formation), as observed at 70 {\mu}m, 160 {\mu}m, 250 {\mu}m, 350 {\mu}m, and 500 {\mu}m by the Photodetector Array Camera and Spectrometer (PACS) and Spectral and Photometric Imaging Receiver (SPIRE) instruments on the Herschel Space Observatory as part of the Herschel imaging survey of OB young stellar objects (HOBYS) Key programme. The Herschel data are complemented by SCUBA-2 data in the submillimetre range, and WISE and Spitzer data in the mid-infrared. In addition, C18O data from the IRAM 30-m Telescope are presented, and used for kinematic information. Sources were extracted from the maps with getsources, and from the fluxes measured, spectral energy distributions were constructed, allowing measurements of source mass and dust temperature. Of 177 Herschel sources robustly detected in the region (a detection with high signal-to-noise and low axis ratio at multiple wavelengths), including protostars and starless cores, 29 are found in a filamentary hub at the centre of the region (a little over 1% of the observed area). These objects are on average smaller, more massive, and more luminous than those in the surrounding regions (which together suggest that they are at a later stage of evolution), a result that cannot be explained entirely by selection effects. These results suggest a picture in which the hub may have begun star formation at a point significantly earlier than the outer regions, possibly forming as a result of feedback from earlier star formation. Furthermore, the hub may be sustaining its star formation by accreting material from the surrounding filaments., Comment: 26 pages, 21 figures, full catalogue available from A&A

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