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1. CHIMPS2: Survey description and $^{12}$CO emission in the Galactic Centre

Author: Hongsu Kim, Yong-Hyun Lee, H. Shi, Hsin-Yi Chen, Sarah Ragan, Gary A. Fuller, Xindi Tang, Francisca Kemper, H. S. Thomas, Sarah Graves, A. Y. Yang, Tetsuhiro Minamidani, Hyeong Sik Yun, Eric W. Koch, David Eden, Jungyeon Cho, Per Friberg, Manash R. Samal, I. Han, S. N. Longmore, Paul C. Clark, T. C. Ching, K. Tahani, Z. Chen, Erik Rosolowsky, M. Zhu, Chengcui Zhang, Sanjay Srinivasan, Kee-Tae Kim, D. L. Li, Jae-Woo Kim, J. Yuan, Masato I. N. Kobayashi, N. T. Phuong, R. Rani, X. J. Jiang, N. Yue, M. Zhang, C. H. Yan, Soumen Deb, Christopher M. Brunt, S. Mairs, M. Liu, A. Bemis, Alessio Traficante, Chang-Sheng Shi, L. W. Liao, Ana Duarte-Cabral, A. Trejo, Andrew Rigby, G. Violino, Shih-Ping Lai, L. Qian, L. Yuan, Nicolas Peretto, Sheng-Yuan Liu, Y. Su, Tie Liu, Tomofumi Umemoto, Kazufumi Torii, Jeong-Eun Lee, S. Wallström, Claudia Cyganowski, Z. Pan, P. Tuan-Anh, Y. Sun, Nario Kuno, Gilles Joncas, Peter Scicluna, Geumsook Park, Takuya Fujiyoshi, M. J. Currie, B. Wang, Y. Gao, Mark Thompson, S. Zhang, K. M. Lacialle, C. H. Peñaloza, Rene Plume, Jaime E. Pineda, Yi-Jehng Kuan, Y. F. Wu, J. Campbell-White, James Urquhart, Toby J. T. Moore, J. J. Zhou, E. Puspitaningrum, Jonathan D. Henshaw, Ho-Gyu Lee, Chang Won Lee, N. Izumi, Y. Ao, Woojin Kwon, S. L. Kim, H. Ma, Eun Jung Chung, Archana Soam, Q. H. Tan, C. Figura, Glenn J. White, S. J. Billington, O. Morata, C. Zhou, Melvin Hoare, Harriet Parsons, M. Fich, and University of St Andrews. School of Physics and Astronomy
Subjects: molecular data, SPIRAL ARMS, FOS: Physical sciences, PHYSICAL-PROPERTIES, Astrophysics::Cosmology and Extragalactic Astrophysics, Astronomy & Astrophysics, I, 01 natural sciences, CENTRAL MOLECULAR ZONE, STAR-FORMATION, surveys, 0103 physical sciences, QB Astronomy, QD, 010303 astronomy & astrophysics, RADIO-CONTINUUM, QC, Solar and Stellar Astrophysics (astro-ph.SR), molecules [ISM], Astrophysics::Galaxy Astrophysics, QB, Physics, HI-GAL, Science & Technology, formation [stars], 010308 nuclear & particles physics, CLOUDS, Astronomy, Astronomy and Astrophysics, 3rd-DAS, QD Chemistry, SAGITTARIUS-D, Astrophysics - Astrophysics of Galaxies, Galaxy, centre [Galaxy], Stars, QC Physics, Astrophysics - Solar and Stellar Astrophysics, 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Physical Sciences, MILKY-WAY
Abstract: The latest generation of Galactic-plane surveys is enhancing our ability to study the effects of galactic environment upon the process of star formation. We present the first data from CO Heterodyne Inner Milky Way Plane Survey 2 (CHIMPS2). CHIMPS2 is a survey that will observe the Inner Galaxy, the Central Molecular Zone (CMZ), and a section of the Outer Galaxy in $^{12}$CO, $^{13}$CO, and C$^{18}$O $(J = 3\rightarrow2)$ emission with the Heterodyne Array Receiver Program on the James Clerk Maxwell Telescope (JCMT). The first CHIMPS2 data presented here are a first look towards the CMZ in $^{12}$CO J = 3$\rightarrow$2 and cover $-3^{\circ}\leq\,\ell\,\leq\,5^{\circ}$ and $\mid$b$\mid \leq 0.5^{\circ}$ with angular resolution of 15 arcsec, velocity resolution of 1 km s$^{-1}$, and rms $\Delta T_A ^\ast =$ 0.58 K at these resolutions. Such high-resolution observations of the CMZ will be a valuable data set for future studies, whilst complementing the existing Galactic Plane surveys, such as SEDIGISM, the Herschel infrared Galactic Plane Survey, and ATLASGAL. In this paper, we discuss the survey plan, the current observations and data, as well as presenting position-position maps of the region. The position-velocity maps detect foreground spiral arms in both absorption and emission., Comment: 18 pages, 14 figures, accepted for publication in MNRAS
Published: 2020

2. SCOPE: SCUBA-2 Continuum Observations of Pre-protostellar Evolution – Survey Description and Compact Source Catalogue

Author: Karine Demyk, Mark G. Rawlings, Giuseppe Cosentino, Lixia Yuan, Gwanjeong Kim, Dimitris Stamatellos, Satoshi Ohashi, Dalei Li, Yasuo Doi, L. Harvey-Smith, Archana Soam, Anthony Peter Whitworth, Mark Thompson, Izaskun Jiménez-Serra, Gary A. Fuller, Huei-Ru Chen, Tae-Geun Ji, Oscar Morata, Chakali Eswaraiah, Jinyi Yang, Takeshi Sakai, Y. L. Yuan, Hiroko Shinnaga, David Cornu, Jonathan Rawlings, Walter Kieran Gear, Shaila Akhter, Yuri Aikawa, A. Chrysostomou, Fanyi Meng, Andrew Walsh, Christine D. Wilson, P. M. McGehee, M. Chen, Tomoya Hirota, Carsten Henkel, You-Hua Chu, E. Falgarone, S. Kim, Yuxin He, Johanna Malinen, Sung-ju Kang, Chin-Fei Lee, Xuepeng Chen, Miju Kang, Annie Hughes, V.-M. Pelkonen, Graham S. Bell, Woojin Kwon, Huawei Zhang, Bon-Chul Koo, E. Jarken, Glenn J. White, J. X. Ge, Andrew Rigby, A-Ran Lyo, Wayne S. Holland, Hong-Li Liu, Geumsook Park, Mengyao Tang, Emily Drabek-Maunder, Hee-Weon Yi, M. Liu, Tie Liu, Rebeka Bögner, J.-P. Bernard, C. P. Zhang, B. S. Wang, Manash R. Samal, Harriet Parsons, Mika Juvela, Toby J. T. Moore, Lei Zhu, Ya-Wen Tang, Guobao Zhang, Leonardo Bronfman, George J. Bendo, S. Mairs, Serena Viti, H. Wang, Tetsuo Hasegawa, Yuxin Lin, Minho Choi, Zhiyuan Ren, Ke Wang, Yi-Jehng Kuan, David Eden, I. Ristorcelli, Lei Qian, X. Chen, Paul F. Goldsmith, Jinhua He, Diego Mardones, Shih-Ping Lai, Di Li, Soojong Pak, Qizhou Zhang, Ken'ichi Tatematsu, L. Montier, Yuefang Wu, C. Zhou, Guido Garay, Patricio Sanhueza, A. Rivera-Ingraham, Nicolas Peretto, Keping Qiu, Siyi Feng, Patrick M. Koch, Neal J. Evans, Jeong-Eun Lee, Andrew Blain, A. P. Marston, Hua-bai Li, M. Fich, Chao Zhang, Eun Jung Chung, G. Luo, J. Montillaud, Derek Ward-Thompson, Jianjun Zhou, Maria Cunningham, Jungha Kim, N. Lo, Roberta Paladini, J. Di Francesco, Jongsoo Kim, Ye Xu, Xing Lu, Charlotte Vastel, Chang Won Lee, Pak Shing Li, John A. P. Lopez, Per Friberg, Sheng-Li Qin, Gerald Moriarty-Schieven, D. Alina, G. Pech, Wen Ping Chen, O. Fehér, Pei Zuo, Sheng-Yuan Liu, Jinghua Yuan, Scott Chapman, Alessio Traficante, Doug Johnstone, Jane Greaves, Do-Young Byun, Naomi Hirano, Helen J. Fraser, Jiali Wang, Koji S. Kawabata, J. G. A. Wouterloot, X. Guan, Hsien Shang, Annie Zavagno, John Richer, Kee-Tae Kim, Sarolta Zahorecz, Kate Pattle, Y. Lee, L. V. Toth, Kevin Lacaille, Department of Physics, Particle Physics and Astrophysics, Liverpool John Moores University (LJMU), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA (UMR_8112)), Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), University of Arizona, 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), 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 de Cergy Pontoise (UCP), and Université Paris-Seine-Université Paris-Seine-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Milky Way, Continuum (design consultancy), SPIRAL ARMS, FOS: Physical sciences, F800, Astrophysics, 01 natural sciences, ISM: clouds, Luminosity, STAR-FORMATION, CLUMP IDENTIFICATION, symbols.namesake, surveys, 0103 physical sciences, Planck, GOULD BELT SURVEY, 010303 astronomy & astrophysics, James Clerk Maxwell Telescope, Solar and Stellar Astrophysics (astro-ph.SR), QC, QB, Physics, LEGACY SURVEY, Spiral galaxy, stars: formation, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Star formation, [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], ATLASGAL, Astronomy and Astrophysics, Galactic plane, 115 Astronomy, Space science, Astrophysics - Astrophysics of Galaxies, CLOUD, submillimetre: ISM, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, [SDU]Sciences of the Universe [physics], GAS, Astrophysics of Galaxies (astro-ph.GA), symbols, MILKY-WAY, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], COMPLETE SAMPLE
Abstract: We present the first release of the data and compact-source catalogue for the JCMT Large Program SCUBA-2 Continuum Observations of Pre-protostellar Evolution (SCOPE). SCOPE consists of 850-um continuum observations of 1235 Planck Galactic Cold Clumps (PGCCs) made with the Submillimetre Common-User Bolometer Array 2 on the James Clerk Maxwell Telescope. These data are at an angular resolution of 14.4 arcsec, significantly improving upon the 353-GHz resolution of Planck at 5 arcmin, and allowing for a catalogue of 3528 compact sources in 558 PGCCs. We find that the detected PGCCs have significant sub-structure, with 61 per cent of detected PGCCs having 3 or more compact sources, with filamentary structure also prevalent within the sample. A detection rate of 45 per cent is found across the survey, which is 95 per cent complete to Planck column densities of $N_{H_{2}}$ $>$ 5 $\times$ 10$^{21}$ cm$^{-2}$. By positionally associating the SCOPE compact sources with YSOs, the star formation efficiency, as measured by the ratio of luminosity to mass, in nearby clouds is found to be similar to that in the more distant Galactic Plane, with the column density distributions also indistinguishable from each other., 16 pages, 13 figures, 1 table. Accepted for publication in MNRAS
Published: 2019
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3. CCAT-Prime: science with an ultra-widefield submillimeter observatory on Cerro Chajnantor

Author: Norm Murray, Urs U. Graf, Rodrigo Herrera-Camus, Stephen C. Parshley, Martha P. Haynes, Michael D. Niemack, Nicholas F. Cothard, Peter Schilke, Ricardo Bustos, Benjamin Magnelli, Gordon J. Stacey, Frank Bertoldi, J. R. Bond, M. Fich, Laura C. Keating, Terry Herter, Eve M. Vavagiakis, Simon Foreman, Dominik Riechers, Kaustuv Basu, Scott Chapman, Dongwoo T. Chung, Daan Meerburg, Riccardo Giovanelli, M. R. Nolta, Joel Meyers, Manuel Aravena, Renée Hložek, Douglas Scott, Nick Battaglia, Patricio A. Gallardo, Marco Viero, Patrick C. Breysse, J. Erler, J. Stutzki, George Stein, T. Nikola, Doug Johnstone, Benjamin Beringue, Jason R. Stevens, Gilmozzi, Roberto, Marshall, Heather K., and Spyromilio, Jason
Subjects: Physics, Spectrometer, 010308 nuclear & particles physics, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, Imaging spectrometer, Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, First light, 01 natural sciences, Galaxy, law.invention, Telescope, Observatory, law, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Reionization, Astrophysics::Galaxy Astrophysics
Abstract: We present the detailed science case, and brief descriptions of the telescope design, site, and first light instrument plans for a new ultra-wide field submillimeter observatory, CCAT-prime, that we are constructing at a 5600 m elevation site on Cerro Chajnantor in northern Chile. Our science goals are to study star and galaxy formation from the epoch of reionization to the present, investigate the growth of structure in the Universe, improve the precision of B-mode CMB measurements, and investigate the interstellar medium and star formation in the Galaxy and nearby galaxies through spectroscopic, polarimetric, and broadband surveys at wavelengths from 200 m to 2 mm. These goals are realized with our two first light instruments, a large field-of-view (FoV) bolometer-based imager called Prime-Cam (that has both camera and an imaging spectrometer modules), and a multi-beam submillimeter heterodyne spectrometer, CHAI. CCAT-prime will have very high surface accuracy and very low system emissivity, so that combined with its wide FoV at the unsurpassed CCAT site our telescope/instrumentation combination is ideally suited to pursue this science. The CCAT-prime telescope is being designed and built by Vertex Antennentechnik GmbH. We expect to achieve first light in the spring of 2021., Ground-based and Airborne Telescopes VII, June 10-15, 2018, Austin, USA, Series: Proceedings of SPIE; no. 10700
Published: 2018
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4. Prime-Cam: A first-light instrument for the CCAT-prime telescope

Author: Johannes Hubmayr, Richard J. Bond, Gabriele Coppi, Patricio A. Gallardo, Aamir Ali, Zhilei Xu, Jason R. Stevens, Michael D. Niemack, Nicholas F. Cothard, Gordon J. Stacey, Kayla M. Rossi, Z. Ahmed, Terry Herter, Michael R. Vissers, John Orlowski-Scherer, Dominik Riechers, M. Fich, Ningfeng Zhu, Kaustuv Basu, Sara M. Simon, Kent D. Irwin, Carlos Sierra, Douglas Scott, Shannon M. Duff, Joel N. Ullom, Edward J. Wollack, Nick Battaglia, Dongwoo T. Chung, Stephen C. Parshley, Cody J. Duell, M. R. Nolta, Norm Murray, Simon Dicker, Brian J. Koopman, Samantha Walker, Jeff McMahon, S. Henderson, T. Nikola, J. Erler, Ricardo Bustos, Nicholas Galitzki, Gene C. Hilton, Eve M. Vavagiakis, Maximiliano Silva-Feaver, Frank Bertoldi, Scott Chapman, Vavagiakis, E, Ahmed, Z, Ali, A, Basu, K, Battaglia, N, Bertoldi, F, Bond, R, Bustos, R, Chapman, S, Chung, D, Coppi, G, Cothard, N, Dicker, S, Duell, C, Duff, S, Erler, J, Fich, M, Galitzki, N, Gallardo, P, Henderson, S, Herter, T, Hilton, G, Hubmayr, J, Irwin, K, Koopman, B, Mcmahon, J, Murray, N, Niemack, M, Nikola, T, Nolta, M, Orlowski-Scherer, J, Parshley, S, Riechers, D, Rossi, K, Scott, D, Sierra, C, Silva-Feaver, M, Simon, S, Stacey, G, Stevens, J, Ullom, J, Vissers, M, Walker, S, Wollack, E, Xu, Z, and Zhu, N
Subjects: Cryostat, Cosmology and Nongalactic Astrophysics (astro-ph.CO), media_common.quotation_subject, Cryogenic, Cosmic microwave background, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, law.invention, Telescope, Optics, Mechanical design, law, 0103 physical sciences, Broadband, Cosmic Microwave Background, Fabry-Perot Interferometry, 010306 general physics, Cryostat design, 010303 astronomy & astrophysics, Reionization, Instrumentation and Methods for Astrophysics (astro-ph.IM), Millimeter and sub-millimeter astrophysic, Astrophysics::Galaxy Astrophysics, media_common, Physics, business.industry, Bolometer, Focal plane array, Astrophysics::Instrumentation and Methods for Astrophysics, First light, Sky, Superconducting detectors, business, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: CCAT-prime will be a 6-meter aperture telescope operating from sub-mm to mm wavelengths, located at 5600 meters elevation on Cerro Chajnantor in the Atacama Desert in Chile. Its novel crossed-Dragone optical design will deliver a high throughput, wide field of view capable of illuminating much larger arrays of sub-mm and mm detectors than can existing telescopes. We present an overview of the motivation and design of Prime-Cam, a first-light instrument for CCAT-prime. Prime-Cam will house seven instrument modules in a 1.8 meter diameter cryostat, cooled by a dilution refrigerator. The optical elements will consist of silicon lenses, and the instrument modules can be individually optimized for particular science goals. The current design enables both broadband, dual-polarization measurements and narrow-band, Fabry-Perot spectroscopic imaging using multichroic transition-edge sensor (TES) bolometers operating between 190 and 450 GHz. It also includes broadband kinetic induction detectors (KIDs) operating at 860 GHz. This wide range of frequencies will allow excellent characterization and removal of galactic foregrounds, which will enable precision measurements of the sub-mm and mm sky. Prime-Cam will be used to constrain cosmology via the Sunyaev-Zeldovich effects, map the intensity of [CII] 158 $\mu$m emission from the Epoch of Reionization, measure Cosmic Microwave Background polarization and foregrounds, and characterize the star formation history over a wide range of redshifts. More information about CCAT-prime can be found at www.ccatobservatory.org., Comment: Presented at SPIE Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, June 15th, 2018
Published: 2018

5. The JCMT Gould Belt Survey: A First Look at the Auriga-California Molecular Cloud with SCUBA-2

Author: D. Nutter, Harold M. Butner, J. S. Richer, J. G. A. Wouterloot, Sarah Sadavoy, Joseph C. Mottram, G. Joncas, Glenn J. White, Jason M. Kirk, Wayne S. Holland, J. Yates, Doug Johnstone, Jason Fiege, J. Di Francesco, Gerald H. Moriarty-Schieven, Jaime E. Pineda, C. Quinn, David S. Berry, Derek Ward-Thompson, Nicholas F. H Tothill, M. J. Currie, S. Mairs, Rachel Friesen, H. Broekhoven-Fiene, Michael Chun-Yuan Chen, C. Salji, C. Mowat, Sarah Graves, Michiel R. Hogerheijde, Jennifer Hatchell, Emily Drabek-Maunder, Helen Kirk, M. Fich, Paul Harvey, S. Tisi, D. Rumble, D. Bresnahan, Erik Rosolowsky, Simon Coudé, D. Robertson, Lewis B. G. Knee, Jane Greaves, S. Viti, J. V. Buckle, Antonio Chrysostomou, Jonathan Rawlings, Christine D. Wilson, M. Zhu, J. Gregson, Christopher J. Davis, Ana Duarte-Cabral, T. Jenness, Kenneth A. Marsh, H. Thomas, Brenda C. Matthews, Kate Pattle, Per Friberg, Gary A. Fuller, Pierre Bastien, and James Lane
Subjects: Physics, AURIGA, Mass distribution, 010308 nuclear & particles physics, Star formation, Infrared, Molecular cloud, Young stellar object, FOS: Physical sciences, Astronomy and Astrophysics, F500, Astrophysics, Astrophysics - Astrophysics of Galaxies, 01 natural sciences, Spire, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Protostar, 010303 astronomy & astrophysics, QB
Abstract: We present 850 and 450 micron observations of the dense regions within the Auriga-California molecular cloud using SCUBA-2 as part of the JCMT Gould Belt Legacy Survey to identify candidate protostellar objects, measure the masses of their circumstellar material (disk and envelope), and compare the star formation to that in the Orion A molecular cloud. We identify 59 candidate protostars based on the presence of compact submillimeter emission, complementing these observations with existing Herschel/SPIRE maps. Of our candidate protostars, 24 are associated with young stellar objects (YSOs) in the Spitzer and Herschel/PACS catalogs of 166 and 60 YSOs, respectively (177 unique), confirming their protostellar nature. The remaining 35 candidate protostars are in regions, particularly around LkHalpha 101, where the background cloud emission is too bright to verify or rule out the presence of the compact 70 micron emission that is expected for a protostellar source. We keep these candidate protostars in our sample but note that they may indeed be prestellar in nature. Our observations are sensitive to the high end of the mass distribution in Auriga-Cal. We find that the disparity between the richness of infrared star forming objects in Orion A and the sparsity in Auriga-Cal extends to the submillimeter, suggesting that the relative star formation rates have not varied over the Class II lifetime and that Auriga-Cal will maintain a lower star formation efficiency., Comment: 39 pages (54 including the Appendix), 9 figures, 3 tables, in press in ApJ
Published: 2018

6. The JCMT Gould Belt Survey: A First Look at SCUBA-2 Observations of the Lupus I Molecular Cloud

Author: J. Di Francesco, D. Johnstone, Jason M. Kirk, Sarah Graves, Kenneth A. Marsh, C. Mowat, Ana Duarte-Cabral, Steve Mairs, M. J. Currie, Jane V. Buckle, Helen Kirk, H. Thomas, H. Broekhoven-Fiene, Brenda C. Matthews, Christopher J. Davis, B. Retter, Nicholas F. H Tothill, Jane Greaves, Jeremy Yates, D. Robertson, M. Zhu, Gary A. Fuller, D. Rumble, Antonio Chrysostomou, Simon Coudé, Erik Rosolowsky, Sarah Sadavoy, Pierre Bastien, S. Tisi, Wayne S. Holland, Joseph C. Mottram, Emily Drabek-Maunder, M. Chen, Rachel Friesen, D. Bresnahan, L. B. G. Knee, David S. Berry, Kate Pattle, Michiel R. Hogerheijde, M. Fich, Per Friberg, T. Jenness, Derek Ward-Thompson, Jennifer Hatchell, Gilles Joncas, Gerald Moriarty-Schieven, Jason Fiege, Jonathan Rawlings, John Richer, Harold M. Butner, J. G. A. Wouterloot, Glenn J. White, and S. Viti
Subjects: submillimetre: general, Serpens, ISM: structure, Young stellar object, stars: pre-main-sequence, Astrophysics, F500, 01 natural sciences, sequence stars:protostars, 0103 physical sciences, Protostar, 010303 astronomy & astrophysics, catalogues, James Clerk Maxwell Telescope, QB, Physics, stars: formation, stars: protostars, 010308 nuclear & particles physics, Star formation, Molecular cloud, Astronomy, Astronomy and Astrophysics, Virial mass, Space and Planetary Science, Ophiuchus, stars: pre-main
Abstract: This paper presents observations of the Lupus I molecular cloud at 450 and 850 μm with\ud Submillimetre Common User Bolometer Array (SCUBA-2) as part of the James Clerk Maxwell\ud Telescope Gould Belt Survey (JCMT GBS). Nine compact sources, assumed to be the discs of\ud young stellar objects (YSOs), 12 extended protostellar, pre-stellar and starless cores, and one\ud isolated, low-luminosity protostar, are detected in the region. Spectral energy distributions,\ud including submillimetre fluxes, are produced for 15 YSOs, and each is fitted with the models\ud of Robitaille et al. The proportion of Class 0/I protostars is higher than that seen in other\ud Gould Belt regions such as Ophiuchus and Serpens. Circumstellar disc masses are calculated\ud for more evolved sources, while protostellar envelope masses are calculated for protostars.\ud Up to four very low luminosity objects are found; a large fraction when compared to other\ud Spitzer c2d regions. One YSO has a disc mass greater than the minimum mass solar nebula.\ud 12 starless/protostellar cores are detected by SCUBA-2 and their masses are calculated. The\ud stability of these cores is examined using both the thermal Jeans mass and a turbulent virial\ud mass when possible. Two cores in Lupus I are super-Jeans and contain no known YSOs. One\ud of these cores has a virial parameter of 1.1 ± 0.4, and could therefore be pre-stellar. The high\ud ratio of Class 0/I to Class III YSOs (1:1), and the presence of a pre-stellar core candidate,\ud provides support for the hypothesis that a shock recently triggered star formation in Lupus I.
Published: 2017

7. The JCMT Gould Belt Survey: a first look at IC 5146

Author: D. Johnstone, S. Ciccone, H. Kirk, S. Mairs, J. Buckle, D. S. Berry, H. Broekhoven-Fiene, M. J. Currie, J. Hatchell, T. Jenness, J. C. Mottram, K. Pattle, S. Tisi, J. Di Francesco, M. R. Hogerheijde, D. Ward-Thompson, P. Bastien, D. Bresnahan, H. Butner, M. Chen, A. Chrysostomou, S. Coudé, C. J. Davis, E. Drabek-Maunder, A. Duarte-Cabral, M. Fich, J. Fiege, P. Friberg, R. Friesen, G. A. Fuller, S. Graves, J. Greaves, J. Gregson, W. Holland, G. Joncas, J. M. Kirk, L. B. G. Knee, K. Marsh, B. C. Matthews, G. Moriarty-Schieven, C. Mowat, D. Nutter, J. E. Pineda, C. Salji, J. Rawlings, J. Richer, D. Robertson, E. Rosolowsky, D. Rumble, S. Sadavoy, H. Thomas, N. Tothill, S. Viti, G. J. White, J. Wouterloot, J. Yates, and M. Zhu
Subjects: submillimeter: galaxies, ISM: structure, galaxies [submillimeter], FOS: Physical sciences, F500, Astrophysics, ISM: clouds, 01 natural sciences, 0103 physical sciences, Protostar, ISM [submillimeter], 010303 astronomy & astrophysics, protostars [stars], Solar and Stellar Astrophysics (astro-ph.SR), Physics, Nebula, stars: formation, formation [stars], stars: protostars, 010308 nuclear & particles physics, Star formation, Molecular cloud, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics, 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), submillimeter: ISM, structure [ISM], clouds [ISM]
Abstract: We present 450 and 850 micron submillimetre continuum observations of the IC5146 star-forming region taken as part of the JCMT Gould Belt Survey. We investigate the location of bright submillimetre (clumped) emission with the larger-scale molecular cloud through comparison with extinction maps, and find that these denser structures correlate with higher cloud column density. Ninety-six individual submillimetre clumps are identified using FellWalker and their physical properties are examined. These clumps are found to be relatively massive, ranging from 0.5to 116 MSun with a mean mass of 8 MSun and a median mass of 3.7 MSun. A stability analysis for the clumps suggest that the majority are (thermally) Jeans stable, with M/M_J < 1. We further compare the locations of known protostars with the observed submillimetre emission, finding that younger protostars, i.e., Class 0 and I sources, are strongly correlated with submillimetre peaks and that the clumps with protostars are among the most Jeans unstable. Finally, we contrast the evolutionary conditions in the two major star-forming regions within IC5146: the young cluster associated with the Cocoon Nebula and the more distributed star formation associated with the Northern Streamer filaments. The Cocoon Nebula appears to have converted a higher fraction of its mass into dense clumps and protostars, the clumps are more likely to be Jeans unstable, and a larger fraction of these remaining clumps contain embedded protostars. The Northern Streamer, however, has a larger number of clumps in total and a larger fraction of the known protostars are still embedded within these clumps., 30 pages, 11 figures, 8 tables, accepted by ApJ
Published: 2017
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8. The JCMT Gould Belt Survey: first results from SCUBA-2 observations of the Cepheus Flare region

Author: Jane V. Buckle, Jason M. Kirk, Kate Pattle, Jane Greaves, Emily Drabek-Maunder, D. Johnstone, H. Thomas, Simon Coudé, S. Tisi, David John Nutter, Sarah Graves, M. Chen, Helen Kirk, D. Bresnahan, H. Broekhoven-Fiene, Gilles Joncas, Harold M. Butner, Joseph C. Mottram, D. Robertson, Jeremy Yates, J. Di Francesco, Antonio Chrysostomou, Gary A. Fuller, David S. Berry, J. Gregson, J. G. A. Wouterloot, Wayne S. Holland, M. Fich, Jonathan Rawlings, Pierre Bastien, S. Viti, T. Jenness, Glenn J. White, Michiel R. Hogerheijde, Derek Ward-Thompson, S. Walker-Smith, John Richer, Brenda C. Matthews, Christopher J. Davis, Lewis B. G. Knee, Ana Duarte-Cabral, Steve Mairs, Nicholas F. H Tothill, Sarah Sadavoy, C. Mowat, M. J. Currie, Jason Fiege, Kenneth A. Marsh, M. Zhu, D. Rumble, Jared Keown, Per Friberg, Jaime E. Pineda, C. Quinn, Rachel Friesen, Jennifer Hatchell, Gerald Moriarty-Schieven, S. F. Beaulieu, C. Salji, and Erik Rosolowsky
Subjects: Stars: formation, FOS: Physical sciences, Library science, F500, 01 natural sciences, Indigenous, Observatory, 0103 physical sciences, Agency (sociology), 14. Life underwater, Submillimetre: ISM, 010303 astronomy & astrophysics, James Clerk Maxwell Telescope, QB, Scientific instrument, Physics, geography, Summit, geography.geographical_feature_category, Joint Astronomy Centre, 010308 nuclear & particles physics, Astronomy, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Space observatory, formation, Submillimetre: ISM [Dust extinction, Stars], 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Dust extinction
Abstract: We present observations of the Cepheus Flare obtained as part of the James Clerk Maxwell Telescope (JCMT) Gould Belt Legacy Survey (GBLS) with the SCUBA-2 instrument. We produce a catalogue of sources found by SCUBA-2, and separate these into starless cores and protostars. We determine masses and densities for each of our sources, using source temperatures determined by the Herschel Gould Belt Survey. We compare the properties of starless cores in four different molecular clouds: L1147/58, L1172/74, L1251 and L1228. We find that the core mass functions for each region typically show shallower-than-Salpeter behaviour. We find that L1147/58 and L1228 have a high ratio of starless cores to Class II protostars, while L1251 and L1174 have a low ratio, consistent with the latter regions being more active sites of current star formation, while the former are forming stars less actively. We determine that if modelled as thermally supported Bonnor–Ebert spheres, most of our cores have stable configurations accessible to them. We estimate the external pressures on our cores using archival 13CO velocity dispersion measurements and find that our cores are typically pressure confined, rather than gravitationally bound. We perform a virial analysis on our cores, and find that they typically cannot be supported against collapse by internal thermal energy alone, due primarily to the measured external pressures. This suggests that the dominant mode of internal support in starless cores in the Cepheus Flare is either non-thermal motions or internal magnetic fields., Monthly Notices of the Royal Astronomical Society, 464 (4), ISSN:0035-8711, ISSN:1365-2966, ISSN:1365-8711
Published: 2017
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9. The JCMT Plane Survey: First complete data release - emission maps and compact source catalogue

Author: Steven N. Longmore, L. J. Summers, Alessio Traficante, Melvin Hoare, Joseph C. Mottram, David S. Berry, M. J. Currie, H. Thomas, D. Polychroni, Harriet Parsons, Mark Thompson, Rene Plume, R. O. Redman, C. Natario, Glenn J. White, David Eden, D. Johnstone, J. diFrancesco, M. Fich, K. Tahani, Christopher M. Brunt, J. V. Buckle, C. Salji, M. Zhu, T. Jenness, L. K. Morgan, Gary A. Fuller, M. R. Pestalozzi, Harold M. Butner, A. Chrysostomou, Andrew Rigby, James Urquhart, A. Evans, Andy Gibb, G. Manser, J. S. Richer, G. Joncas, B. Weferling, Toby J. T. Moore, Jessica Dempsey, F. A. Olguin, Nicolas Peretto, H. M. deVilliers, Peter G. Martin, and D. Carretero
Subjects: Physics, Spiral galaxy, 010308 nuclear & particles physics, Star formation, Molecular cloud, Continuum (design consultancy), Astronomy, Flux, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Galactic plane, Astrophysics - Astrophysics of Galaxies, 01 natural sciences, Galaxy, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, 010303 astronomy & astrophysics, James Clerk Maxwell Telescope, QC, QB
Abstract: We present the first data release of the James Clerk Maxwell Telescope (JCMT) Plane Survey (JPS), the JPS Public Release 1 (JPSPR1). JPS is an 850-um continuum survey of six fields in the northern inner Galactic Plane in a longitude range of l=7-63, made with the Sub-millimetre Common-User Bolometer Array 2 (SCUBA-2). This first data release consists of emission maps of the six JPS regions with an average pixel-to-pixel noise of 7.19 mJy beam^-1, when smoothed over the beam, and a compact-source catalogue containing 7,813 sources. The 95 per cent completeness limits of the catalogue are estimated at 0.04 Jy beam^-1 and 0.3 Jy for the peak and integrated flux densities, respectively. The emission contained in the compact-source catalogue is 42 +- 5 per cent of the total and, apart from the large-scale (greater than 8') emission, there is excellent correspondence with features in the 500-um Herschel maps. We find that, with two-dimensional matching, 98 +- 2 per cent of sources within the fields centred at l=20, 30, 40 and 50 are associated with molecular clouds, with 91 +- 3 per cent of the l=30 and 40 sources associated with dense molecular clumps. Matching the JPS catalogue to Herschel 70-um sources, we find that 38 +- 1 per cent of sources show evidence of ongoing star formation. The images and catalogue will be a valuable resource for studies of star formation in the Galaxy and the role of environment and spiral arms in the star formation process., Comment: 22 pages, 18 figures, 4 tables. Full version of Table 3 available from http://www.canfar.phys.uvic.ca/vosui/#/JPSPR1 Accepted for publication in Monthly Notices of the Royal Astronomical Society
Published: 2017
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10. THE JCMT GOULD BELT SURVEY: EVIDENCE FOR DUST GRAIN EVOLUTION IN PERSEUS STAR-FORMING CLUMPS

Author: Glenn J. White, Jane Greaves, David S. Berry, Emily Drabek-Maunder, Ana Duarte-Cabral, Steve Mairs, Harold M. Butner, Malcolm J. Currie, J. G. A. Wouterloot, M. Fich, J. A. Yates, G. Joncas, S. Viti, J. Di Francesco, C. Quinn, Nicholas F. H Tothill, Helen Kirk, Jason Fiege, J. Gregson, Christopher J. Davis, Antonio Chrysostomou, Jonathan Rawlings, T. Jenness, Rachel Friesen, C. Salji, D. Rumble, Lewis B. G. Knee, Michael Chun-Yuan Chen, Erik Rosolowsky, Sarah Sadavoy, S. Tisi, J. V. Buckle, Wayne S. Holland, Joseph C. Mottram, D. Bresnahan, M. Zhu, Derek Ward-Thompson, Simon Coudé, Sarah Graves, Gary A. Fuller, Pierre Bastien, C. Mowat, H. Broekhoven-Fiene, D. Robertson, Kenneth A. Marsh, Michiel R. Hogerheijde, Jennifer Hatchell, Doug Johnstone, H. Thomas, Kate Pattle, Per Friberg, Stefano Pezzuto, Brenda C. Matthews, D. Nutter, J. S. Richer, Jason M. Kirk, Gerald H. Moriarty-Schieven, Jaime E. Pineda, and N. Schneider-Bontemps
Subjects: Extinction (astronomy), FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, F500, 01 natural sciences, 010305 fluids & plasmas, 0103 physical sciences, Protostar, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Stellar evolution, Optical depth, Astrophysics::Galaxy Astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), QB, Cosmic dust, Physics, Spectral index, Molecular cloud, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Stars, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Astrophysics::Earth and Planetary Astrophysics
Abstract: The dust emissivity spectral index, $\beta$, is a critical parameter for deriving the mass and temperature of star-forming structures, and consequently their gravitational stability. The $\beta$ value is dependent on various dust grain properties, such as size, porosity, and surface composition, and is expected to vary as dust grains evolve. Here we present $\beta$, dust temperature, and optical depth maps of the star-forming clumps in the Perseus Molecular Cloud determined from fitting SEDs to combined Herschel and JCMT observations in the 160 $\mu$m, 250 $\mu$m, 350 $\mu$m, 500 $\mu$m, and 850 $\mu$m bands. Most of the derived $\beta$, and dust temperature values fall within the ranges of 1.0 - 2.7 and 8 - 20 K, respectively. In Perseus, we find the $\beta$ distribution differs significantly from clump to clump, indicative of grain growth. Furthermore, we also see significant, localized $\beta$ variations within individual clumps and find low $\beta$ regions correlate with local temperature peaks, hinting at the possible origins of low $\beta$ grains. Throughout Perseus, we also see indications of heating from B stars and embedded protostars, as well evidence of outflows shaping the local landscape., Comment: Accepted to ApJ, 15 figures, 3 tables
Published: 2016

11. The JCMT Gould Belt Survey: a first look at Southern Orion A with SCUBA-2

Author: Nicholas F. H Tothill, Michiel R. Hogerheijde, D. Rumble, Helen Kirk, Jeremy Yates, Gary A. Fuller, D. Johnstone, Jaime E. Pineda, Kate Pattle, Pierre Bastien, M. Zhu, Per Friberg, John Richer, David S. Berry, Ana Duarte-Cabral, Steve Mairs, David John Nutter, Jane V. Buckle, Sarah Graves, Jason Fiege, Glenn J. White, Brenda C. Matthews, Jennifer Hatchell, Gilles Joncas, H. Thomas, Lewis B. G. Knee, Michael Chun-Yuan Chen, Kenneth A. Marsh, Emily Drabek-Maunder, Jane Greaves, D. Bresnahan, C. Salji, H. Broekhoven-Fiene, Sarah Sadavoy, Gerald Moriarty-Schieven, C. Mowat, Joseph C. Mottram, Rachel Friesen, S. Viti, J. Gregson, Jason M. Kirk, J. Di Francesco, Erik Rosolowsky, Jonathan Rawlings, D. Robertson, Harold M. Butner, Antonio Chrysostomou, J. G. A. Wouterloot, M. Fich, Christopher J. Davis, M. J. Currie, Wayne S. Holland, Simon Coudé, T. Jenness, and Derek Ward-Thompson
Subjects: general [Submillimetre], Young stellar object, Population, FOS: Physical sciences, Astrophysics, F500, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, protostars [Stars], 0103 physical sciences, Protostar, Astrophysics::Solar and Stellar Astrophysics, education, 010303 astronomy & astrophysics, formation [Stars], Solar and Stellar Astrophysics (astro-ph.SR), Astrophysics::Galaxy Astrophysics, QC, QB, Physics, ISM [Submillimetre], education.field_of_study, 010308 nuclear & particles physics, Star formation, Molecular cloud, Velocity dispersion, Astronomy, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics, 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), structure [ISM], Jeans instability, Main sequence
Abstract: We present the JCMT Gould Belt Survey's first look results of the southern extent of the Orion A Molecular Cloud ($\delta \leq -5\mathrm{:}31\mathrm{:}27.5$). Employing a two-step structure identification process, we construct individual catalogues for large-scale regions of significant emission labelled as islands and smaller-scale subregions called fragments using the 850 $\mu$m continuum maps obtained using SCUBA-2. We calculate object masses, sizes, column densities, and concentrations. We discuss fragmentation in terms of a Jeans instability analysis and highlight interesting structures as candidates for follow-up studies. Furthermore, we associate the detected emission with young stellar objects (YSOs) identified by Spitzer and Herschel. We find that although the population of active star-forming regions contains a wide variety of sizes and morphologies, there is a strong positive correlation between the concentration of an emission region and its calculated Jeans instability. There are, however, a number of highly unstable subregions in dense areas of the map that show no evidence of star formation. We find that only $\sim$72\% of the YSOs defined as Class 0+I and flat-spectrum protostars coincide with dense 850 $\mu$m emission structures (column densities $>3.7\times10^{21}\mathrm{\:cm}^{-2}$). The remaining 28\% of these objects, which are expected to be embedded in dust and gas, may be misclassified. Finally, we suggest that there is an evolution in the velocity dispersion of young stellar objects such that sources which are more evolved are associated with higher velocities., Comment: 31 Pages, 19 Figures, Accepted for publication in Monthly Notices of the Royal Astronomical Society (MNRAS)
Published: 2016
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12. The JCMT Gould Belt Survey: Evidence for radiative heating and contamination in the W40 complex

Author: Tom J. Wilson, Jaime E. Pineda, C. Salji, Glenn J. White, Nicholas F. H Tothill, Erik Rosolowsky, Simon Coudé, M. Chen, Antonio Chrysostomou, Jason Fiege, D. Rumble, H. Thomas, J. Di Francesco, Helen Kirk, Jonathan Rawlings, Emily Drabek-Maunder, M. Fich, Jane Greaves, H. Broekhoven-Fiene, M. J. Currie, Jason M. Kirk, David John Nutter, Kate Pattle, Michiel R. Hogerheijde, J. Gregson, M. Zhu, Sarah Sadavoy, C. Mowat, Rachel Friesen, Jeremy Yates, S. Viti, Gary A. Fuller, Kenneth A. Marsh, Pierre Bastien, Wayne S. Holland, Per Friberg, D. Robertson, Gilles Joncas, Jane V. Buckle, Jennifer Hatchell, D. Johnstone, S. Tisi, D. Bresnahan, S. Walker-Smith, Ana Duarte-Cabral, Steve Mairs, Harold M. Butner, J. G. A. Wouterloot, Lewis B. G. Knee, T. Jenness, Derek Ward-Thompson, John Richer, David S. Berry, Sarah Graves, Gerald Moriarty-Schieven, Christopher J. Davis, C. Quinn, Brenda C. Matthews, and Joseph C. Mottram
Subjects: Physics, Spectral index, Opacity, 010308 nuclear & particles physics, Star formation, Astronomy, FOS: Physical sciences, Astronomy and Astrophysics, F500, Astrophysics, 01 natural sciences, Astrophysics - Astrophysics of Galaxies, Stars, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Radiative transfer, Protostar, 010303 astronomy & astrophysics, James Clerk Maxwell Telescope, Main sequence, Solar and Stellar Astrophysics (astro-ph.SR), QB
Abstract: We present SCUBA-2 450{\mu}m and 850{\mu}m observations of the W40 complex in the Serpens-Aquila region as part of the James Clerk Maxwell Telescope (JCMT) Gould Belt Survey (GBS) of nearby star-forming regions. We investigate radiative heating by constructing temperature maps from the ratio of SCUBA-2 fluxes using a fixed dust opacity spectral index, {\beta} = 1.8, and a beam convolution kernel to achieve a common 14.8" resolution. We identify 82 clumps ranging between 10 and 36K with a mean temperature of 20{\pm}3K. Clump temperature is strongly correlated with proximity to the external OB association and there is no evidence that the embedded protostars significantly heat the dust. We identify 31 clumps that have cores with densities greater than 105cm{^{-3}}. Thirteen of these cores contain embedded Class 0/I protostars. Many cores are associated with bright-rimmed clouds seen in Herschel 70 {\mu}m images. From JCMT HARP observations of the 12CO 3-2 line, we find contamination of the 850{\mu}m band of up to 20 per cent. We investigate the free-free contribution to SCUBA-2 bands from large-scale and ultracompact H ii regions using archival VLA data and find the contribution is limited to individual stars, accounting for 9 per cent of flux per beam at 450 {\mu}m or 12 per cent at 850 {\mu}m in these cases. We conclude that radiative heating has potentially influenced the formation of stars in the Dust Arc sub-region, favouring Jeans stable clouds in the warm east and fragmentation in the cool west., Comment: 27 pages, 25 figures, 7 tables, 3 online catalogues
Published: 2016
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13. The JCMT Legacy Survey of the Gould Belt: mapping 13CO and C18O in Orion A

Author: Emily I. Curtis, Rachel Friesen, Ana Duarte-Cabral, Sarah Graves, J. A. Yates, M. Fich, Serena Viti, M. Etxaluze, J. V. Buckle, J. M. C. Rawlings, Brenda C. Matthews, Christopher M. Brunt, J. Di Francesco, B. Cavanagh, Nicholas F. H Tothill, Glenn J. White, Gary A. Fuller, Robert J. Simpson, D. Nutter, Doug Johnstone, J. S. Richer, Antonio Chrysostomou, H. E. Matthews, M. R. Hogerheijde, S. Sadavoy, Derek Ward-Thompson, Per Friberg, Jennifer Hatchell, Y. G. Tsamis, J. F. Roberts, Jane S. Greaves, Harold M. Butner, J. G. A. Wouterloot, and Christopher J. Davis
Subjects: Physics, Opacity, 010308 nuclear & particles physics, Bolometer, Astronomy and Astrophysics, Excitation temperature, Astrophysics, 01 natural sciences, 7. Clean energy, law.invention, Protein filament, 13. Climate action, Space and Planetary Science, law, 0103 physical sciences, Orion Nebula, 010303 astronomy & astrophysics, James Clerk Maxwell Telescope, Bar (unit), Line (formation)
Abstract: The Gould Belt Legacy Survey will map star-forming regions within 500 pc, using HARP (Heterodyne Array Receiver Programme), SCUBA-2 (Submillimetre Common-User Bolometer Array 2) and POL-2 (Polarimeter 2) on the James Clerk Maxwell Telescope (JCMT). This paper describes HARP observations of the J = 3-2 transitions of 13CO and C18O towards Orion A. The 1500-resolution observations cover 5 pc of the Orion filament, including OMC1 (inc. BN-KL and Orion Bar), OMC 2/3 and OMC 4, and allow a comparative study of the molecular gas properties throughout the star-forming cloud. The filament shows a velocity gradient of ~1 km/s /pc between OMC 1, 2 and 3, and high velocity emission is detected in both isotopologues. The Orion Nebula and Bar have the largest masses and line widths, and dominate the mass and energetics of the high velocity material. Compact, spatially resolved emission from CH3CN, 13CH3OH, SO, HCOOCH3, C2H5OH, CH3CHO and CH3OCHO is detected towards the Orion Hot Core. The cloud is warm, with a median excitation temperature of ~24 K; the Orion Bar has the highest excitation temperature gas, at >80 K. The C18O excitation temperature correlates well with the dust temperature (to within 40%). The C18O emission is optically thin, and the 13CO emission is marginally optically thick; despite its high mass, OMC 1 shows the lowest opacities. A virial analysis indicates that Orion A is too massive for thermal or turbulent support, but is consistent with a model of a filamentary cloud that is threaded by helical magnetic fields. The variation of physical conditions across the cloud is reflected in the physical characteristics of the dust cores....continued
Published: 2012
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14. The JCMT Gould Belt Survey: SCUBA-2 observations of circumstellar discs in L 1495

Author: Antonio Chrysostomou, David S. Berry, Joseph C. Mottram, Simon Coudé, M. J. Currie, H. Thomas, J. Di Francesco, Per Friberg, Ana Duarte-Cabral, Steve Mairs, M. Fich, Nicholas F. H Tothill, Emily Drabek-Maunder, Harold M. Butner, Helen Kirk, Michael Chun-Yuan Chen, D. Johnstone, Gerald Moriarty-Schieven, Serena Viti, Jason M. Kirk, T. Jenness, S. Tisi, J. G. A. Wouterloot, Christopher J. Davis, David John Nutter, Derek Ward-Thompson, Jennifer Hatchell, J. M. C. Rawlings, Jane Greaves, John Richer, S. F. Beaulieu, D. Rumble, Gilles Joncas, Jaime E. Pineda, Lewis B. G. Knee, Kenneth A. Marsh, Wayne S. Holland, Jeremy Yates, Gary A. Fuller, Glenn J. White, C. Salji, H. Broekhoven-Fiene, Jane V. Buckle, Erik Rosolowsky, Pierre Bastien, Michiel R. Hogerheijde, J. Gregson, Sarah Graves, Christine D. Wilson, Brenda C. Matthews, Kate Pattle, Rachel Friesen, M. Zhu, and Sarah Sadavoy
Subjects: Physics, Opacity, 010308 nuclear & particles physics, Astronomy, FOS: Physical sciences, Astronomy and Astrophysics, F500, Class iii, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Stellar classification, 01 natural sciences, Astrophysics - Astrophysics of Galaxies, Jupiter, Wavelength, Stars, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Detection rate, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: We present 850$\mu$m and 450$\mu$m data from the JCMT Gould Belt Survey obtained with SCUBA-2 and characterise the dust attributes of Class I, Class II and Class III disk sources in L1495. We detect 23% of the sample at both wavelengths, with the detection rate decreasing through the Classes from I--III. The median disk mask is 1.6$\times 10^{-3}$M$_{\odot}$, and only 7% of Class II sources have disk masses larger than 20 Jupiter masses. We detect a higher proportion of disks towards sources with stellar hosts of spectral type K than spectral type M. Class II disks with single stellar hosts of spectral type K have higher masses than those of spectral type M, supporting the hypothesis that higher mass stars have more massive disks. Variations in disk masses calculated at the two wavelengths suggests there may be differences in dust opacity and/or dust temperature between disks with hosts of spectral types K to those with spectral type M., Comment: 11 pages, 10 figures plus Appendix. MNRAS accepted
Published: 2015

15. Imaging the environment of a z= 6.3 submillimeter galaxy with SCUBA-2

Author: A. M. Swinbank, Dominik A. Riechers, Dan Bintley, Tim Jenness, Rob Ivison, James Dunlop, Peter A. R. Ade, Douglas Scott, Andy Gibb, James J. Bock, Wayne S. Holland, M. Fich, E. Chapin, Nicolas Laporte, Ian Smail, Seb Oliver, Duncan Farrah, David L. Clements, Ismael Perez-Fournon, Alain Omont, A. Cooray, James E. Geach, Scott Chapman, A. Conley, E. I. Robson, Hai Fu, and Julie Wardlow
Subjects: Structure formation, Cosmology and Nongalactic Astrophysics (astro-ph.CO), media_common.quotation_subject, Extrapolation, FOS: Physical sciences, Astrophysics, galaxies [Radio continuum], 01 natural sciences, high-redshift [Galaxies], QB0460, galaxies [Infrared], HFLS3, 0103 physical sciences, medicine, 010303 astronomy & astrophysics, media_common, Confusion, Physics, galaxies. [Submillimeter], 010308 nuclear & particles physics, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Galaxy, Universe, Redshift, starburst [Galaxies], Gravitational lens, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), medicine.symptom, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We describe a search for submillimeter emission in the vicinity of one of the most distant, luminous galaxies known, HerMES FLS3 at z=6.34, exploiting it as a signpost to a potentially biased region of the early Universe, as might be expected in hierarchical structure formation models. Imaging to the confusion limit with the innovative, wide-field submillimeter bolometer camera, SCUBA-2, we are sensitive to colder and/or less luminous galaxies in the surroundings of HFLS3. We use the Millennium Simulation to illustrate that HFLS3 may be expected to have companions if it is as massive as claimed, but find no significant evidence from the surface density of SCUBA-2 galaxies in its vicinity, or their colors, that HFLS3 marks an over-density of dusty, star-forming galaxies. We cannot rule out the presence of dusty neighbours with confidence, but deeper 450-um imaging has the potential to more tightly constrain the redshifts of nearby galaxies, at least one of which likely lies at z>~5. If associations with HFLS3 can be ruled out, this could be taken as evidence that HFLS3 is less biased than a simple extrapolation of the Millennium Simulation may imply. This could suggest either that it represents a rare short-lived, but highly luminous, phase in the evolution of an otherwise typical galaxy, or that this system has suffered amplification due to a foreground gravitational lens and so is not as intrinsically luminous as claimed., 6 pages; 4 colour figures
Published: 2014

16. THE JCMT GOULD BELT SURVEY: A FIRST LOOK AT DENSE CORES IN ORION B

Author: Sarah Sadavoy, Joseph C. Mottram, Wayne S. Holland, Gary A. Fuller, Pierre Bastien, C. Quinn, Gerald H. Moriarty-Schieven, Glenn J. White, Sarah Graves, J. V. Buckle, Jaime E. Pineda, M. Zhu, Emily Drabek-Maunder, Michael Chun-Yuan Chen, D. Nutter, Derek Ward-Thompson, J. Gregson, Christopher J. Davis, J. S. Richer, J. Di Francesco, Jason M. Kirk, Simon Coudé, Rachel Friesen, C. Salji, J. A. Yates, Helen Kirk, M. Fich, Jason Fiege, Erik Rosolowsky, Malcolm J. Currie, G. Joncas, Jonathan M. C. Rawlings, S. Tisi, Jane Greaves, D. Bresnahan, Lewis B. G. Knee, David S. Berry, Nicholas F. H Tothill, D. Rumble, C. Mowat, Antonio Chrysostomou, Harold M. Butner, J. G. A. Wouterloot, D. Robertson, Kate Pattle, S. Viti, Per Friberg, Brenda C. Matthews, H. Broekhoven-Fiene, Kenneth A. Marsh, H. Thomas, Ana Duarte-Cabral, Steve Mairs, T. Jenness, Michiel R. Hogerheijde, Jennifer Hatchell, and Doug Johnstone
Subjects: Physics, Mass distribution, 010308 nuclear & particles physics, Molecular cloud, Extinction (astronomy), Astronomy and Astrophysics, F500, Astrophysics, Astrophysics - Astrophysics of Galaxies, 01 natural sciences, Stars, Star cluster, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, 0103 physical sciences, Gravitational collapse, Protostar, 010303 astronomy & astrophysics, QB, Cosmic dust
Abstract: We present a first look at the SCUBA-2 observations of three sub-regions of the Orion B molecular cloud: LDN 1622, NGC 2023/2024, and NGC 2068/2071, from the JCMT Gould Belt Legacy Survey. We identify 29, 564, and 322 dense cores in L1622, NGC 2023/2024, and NGC 2068/2071 respectively, using the SCUBA-2 850 micron map, and present their basic properties, including their peak fluxes, total fluxes, and sizes, and an estimate of the corresponding 450 micron peak fluxes and total fluxes, using the FellWalker source extraction algorithm. Assuming a constant temperature of 20 K, the starless dense cores have a mass function similar to that found in previous dense core analyses, with a Salpeter-like slope at the high-mass end. The majority of cores appear stable to gravitational collapse when considering only thermal pressure; indeed, most of the cores which have masses above the thermal Jeans mass are already associated with at least one protostar. At higher cloud column densities, above 1-2 x 10^23 cm^-2, most of the mass is found within dense cores, while at lower cloud column densities, below 1 x 10^23 cm^-2, this fraction drops to 10% or lower. Overall, the fraction of dense cores associated with a protostar is quite small (, Comment: Accepted for publication in ApJ; 28 pages, 19 figures. Data associated with the paper, including the full table 4, can be found at https://doi.org/10.11570/16.0003
Published: 2016
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17. The JCMT nearby galaxies legacy survey - VIII. CO data and the LCO(3-2)-LFIR correlation in the SINGS sample

Author: J. M. van der Hulst, B. Weferling, Rupinder Singh Brar, M. Zhu, Patrick Côté, George J. Bendo, J. Golding, E. Sinukoff, Remo P. J. Tilanus, Mattia Vaccari, Harold M. Butner, Steve Serjeant, Angela M. J. Mortier, K. Coppin, Elias Brinks, Glenn J. White, P. Chanial, D. Rigopoulou, M. Azimlu, Nial Tanvir, Henry E. Matthews, S. Brooks, Judith A. Irwin, Frank P. Israel, A. Usero, P. Alexander, M. Fich, Pauline Barmby, Erik Rosolowsky, Jonathan Ivor Davies, Carrie Bridge, B. E. Warren, Michael J. Hudson, Rob Ivison, Stéphane Courteau, David H. Hughes, J. R. Sanchez-Gallego, Stephanie Cote, K. Shorten, Tracy Webb, A. Pope, M. J. Page, E. R. Seaquist, David L. Clements, Steve Eales, Glen Petitpas, D. Attewell, Boon-Kok Tan, P. van der Werf, Christine D. Wilson, T. J. Parkin, S. Mühle, Colin Borys, Johan H. Knapen, Kristine Spekkens, Jamie Leech, C. Vlahakis, Volker Heesen, David M. Alexander, T. Wiegert, and Kapteyn Astronomical Institute
Subjects: galaxies: spiral, Cosmology and Nongalactic Astrophysics (astro-ph.CO), WARM MOLECULAR GAS, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxy merger, spiral. [Galaxies], 01 natural sciences, Luminosity, CO-TO-H-2 CONVERSION FACTOR, 0103 physical sciences, ISM [Galaxies], 010303 astronomy & astrophysics, James Clerk Maxwell Telescope, galaxies: kinematics and dynamics, Astrophysics::Galaxy Astrophysics, formation [Stars], molecules [ISM], Line (formation), Physics, stars: formation, STAR-FORMATION LAW, INTERSTELLAR-MEDIUM, 010308 nuclear & particles physics, Star formation, kinematics and dynamics [Galaxies], Astronomy and Astrophysics, HUBBLE-SPACE-TELESCOPE, Mass ratio, VIRGO CLUSTER, LUMINOUS INFRARED GALAXIES, Galaxy, Redshift, ISM: molecules, SPECTRAL ENERGY-DISTRIBUTION, Space and Planetary Science, SPIRAL GALAXIES, galaxies: ISM, LOW-METALLICITY ENVIRONMENTS, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: The James Clerk Maxwell Telescope Nearby Galaxies Legacy Survey (NGLS) comprises an HI-selected sample of 155 galaxies spanning all morphological types with distances less than 25 Mpc. We describe the scientific goals of the survey, the sample selection, and the observing strategy. We also present an atlas and analysis of the CO J=3-2 maps for the 47 galaxies in the NGLS which are also part of the Spitzer Infrared Nearby Galaxies Survey. We find a wide range of molecular gas mass fractions in the galaxies in this sample and explore the correlation of the far-infrared luminosity, which traces star formation, with the CO luminosity, which traces the molecular gas mass. By comparing the NGLS data with merging galaxies at low and high redshift which have also been observed in the CO J=3-2 line, we show that the correlation of far-infrared and CO luminosity shows a significant trend with luminosity. This trend is consistent with a molecular gas depletion time which is more than an order of magnitude faster in the merger galaxies than in nearby normal galaxies. We also find a strong correlation of the L(FIR)/L(CO3-2) ratio with the atomic to molecular gas mass ratio. This correlation suggests that some of the far-infrared emission originates from dust associated with atomic gas and that its contribution is particularly important in galaxies where most of the gas is in the atomic phase., Comment: 37 pages, 107 figures; accepted for publication in MNRAS. Data and additional information are available at http://www.physics.mcmaster.ca/~wilson/www_xfer/NGLS/
Published: 2012

18. Herschel/HIFI spectroscopy of the intermediate mass protostar NGC7129 FIRS 2 [Letter]

Author: D. Johnstone, M. Fich, C. McCoey, T. A. van Kempen, A. Fuente, L. E. Kristensen, J. Cernicharo, P. Caselli, R. Visser, R. Plume, G. J. Herczeg, E. F. van Dishoeck, S. Wampfler, R. Bachiller, A. Baudry, M. Benedettini, E. Bergin, A. O. Benz, P. Bjerkeli, G. Blake, S. Bontemps, J. Braine, S. Bruderer, C. Codella, F. Daniel, A. M. di Giorgio, C. Dominik, S. D. Doty, P. Encrenaz, T. Giannini, J. R. Goicoechea, Th. de Graauw, F. Helmich, F. Herpin, M. R. Hogerheijde, T. Jacq, J. K. Jørgensen, B. Larsson, D. Lis, R. Liseau, M. Marseille, G. Melnick, D. Neufeld, B. Nisini, M. Olberg, B. Parise, J. Pearson, C. Risacher, J. Santiago-García, P. Saraceno, R. Shipman, M. Tafalla, F. van der Tak, F. Wyrowski, U. A. Yıldız, E. Caux, N. Honingh, W. Jellema, R. Schieder, D. Teyssier, N. Whyborn, 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), Centro de Investigaciones Biológicas (CSIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), 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 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB), Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB), Laboratoire Optimisation de la Conception et Ingénierie de l'Environnement (LOCIE), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Amsterdam [Amsterdam] (UvA), 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), SRON Netherlands Institute for Space Research (SRON), INAF - Osservatorio Astronomico di Roma (OAR), Onsala Space Observatory, Chalmers University of Technology [Göteborg], 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), ESO, European Southern Observatory (ESO), Istituto di Fisica dello Spazio Interplanetario (IFSI), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Max-Planck-Institut für Radioastronomie (MPIFR), Herschel Science Center [Madrid], European Space Astronomy Centre (ESAC), Agence Spatiale Européenne = European Space Agency (ESA)-Agence Spatiale Européenne = European Space Agency (ESA), Astronomy, 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, École normale supérieure - Paris (ENS Paris), 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, Consiglio Nazionale delle Ricerche (CNR), European Space Agency (ESA)-European Space Agency (ESA), and Low Energy Astrophysics (API, FNWI)
Subjects: STAR-FORMING REGIONS, stars: formation, PACS SPECTROSCOPY, [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], astrochemistry, FOS: Physical sciences, Astronomy and Astrophysics, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], YOUNG STELLAR OBJECTS, 01 natural sciences, EVOLUTION, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, 0103 physical sciences, EXCITATION, WATER, 010306 general physics, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), HIFI, HH 46, QB
Abstract: HERSCHEL-HIFI observations of water from the intermediate mass protostar NGC7129 FIRS 2 provide a powerful diagnostic of the physical conditions in this star formation environment. Six spectral settings, covering four H216O and two H218O lines, were observed and all but one H218O line were detected. The four H2 16 O lines discussed here share a similar morphology: a narrower, \approx 6 km/s, component centered slightly redward of the systemic velocity of NGC7129 FIRS 2 and a much broader, \approx 25 km/s component centered blueward and likely associated with powerful outflows. The narrower components are consistent with emission from water arising in the envelope around the intermediate mass protostar, and the abundance of H2O is constrained to \approx 10-7 for the outer envelope. Additionally, the presence of a narrow self-absorption component for the lowest energy lines is likely due to self-absorption from colder water in the outer envelope. The broader component, where the H2O/CO relative abundance is found to be \approx 0.2, appears to be tracing the same energetic region that produces strong CO emission at high J., 6 pages, 4 figures, accepted by A&A
Published: 2010
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19. Water in massive star-forming regions: HIFI observations of W3 IRS5

Author: L. Chavarría, F. Herpin, T. Jacq, J. Braine, S. Bontemps, A. Baudry, M. Marseille, F. van der Tak, B. Pietropaoli, F. Wyrowski, R. Shipman, W. Frieswijk, E. F. van Dishoeck, J. Cernicharo, R. Bachiller, M. Benedettini, A. O. Benz, E. Bergin, P. Bjerkeli, G. A. Blake, S. Bruderer, P. Caselli, C. Codella, F. Daniel, A. M. di Giorgio, C. Dominik, S. D. Doty, P. Encrenaz, M. Fich, A. Fuente, T. Giannini, J. R. Goicoechea, Th. de Graauw, P. Hartogh, F. Helmich, G. J. Herczeg, M. R. Hogerheijde, D. Johnstone, J. K. Jørgensen, L. E. Kristensen, B. Larsson, D. Lis, R. Liseau, C. McCoey, G. Melnick, B. Nisini, M. Olberg, B. Parise, J. C. Pearson, R. Plume, C. Risacher, J. Santiago-García, P. Saraceno, J. Stutzki, R. Szczerba, M. Tafalla, A. Tielens, T. A. van Kempen, R. Visser, S. F. Wampfler, J. Willem, U. A. Yıldız, Astronomy, Low Energy Astrophysics (API, FNWI), 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), SRON Netherlands Institute for Space Research (SRON), 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), Max-Planck-Institut für Radioastronomie (MPIFR), Centro de Investigaciones Biológicas (CSIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Laboratoire Optimisation de la Conception et Ingénierie de l'Environnement (LOCIE), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Amsterdam [Amsterdam] (UvA), 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), Max Planck Institute for Solar System Research (MPS), Max-Planck-Gesellschaft, INAF - Osservatorio Astronomico di Roma (OAR), Onsala Space Observatory, Chalmers University of Technology [Göteborg], 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, ESO, European Southern Observatory (ESO), Istituto di Fisica dello Spazio Interplanetario (IFSI), Consiglio Nazionale delle Ricerche (CNR), 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), École normale supérieure - Paris (ENS-PSL), Max-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research (MPS), 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), and National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR)
Subjects: 010504 meteorology & atmospheric sciences, TRACERS, Astronomy, MODELS, FOS: Physical sciences, Astrophysics, 01 natural sciences, Spectral line, ISM: abundances, ABUNDANCES, RADIATIVE-TRANSFER, Abundance (ecology), 0103 physical sciences, Radiative transfer, Isotopologue, Spectral resolution, Absorption (electromagnetic radiation), 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), QB, 0105 earth and related environmental sciences, Envelope (waves), Physics, radio lines: ISM, TRAPEZIUM, stars: formation, SPECTROSCOPY, [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], Research Programm of Institute for Mathematics, Astrophysics and Particle Physics, extinction, PROTOSTARS, Astronomy and Astrophysics, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], ISM: molecules, RATIOS, stars: massive, ENVELOPES, CONTINUUM, Astrophysics - Solar and Stellar Astrophysics, 13. Climate action, Space and Planetary Science, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Outflow, dust, dust, extinction
Abstract: We present Herschel observations of the water molecule in the massive star-forming region W3 IRS5. The o-H17O 110-101, p-H18O 111-000, p-H2O 22 202-111, p-H2O 111-000, o-H2O 221-212, and o-H2O 212-101 lines, covering a frequency range from 552 up to 1669 GHz, have been detected at high spectral resolution with HIFI. The water lines in W3 IRS5 show well-defined high-velocity wings that indicate a clear contribution by outflows. Moreover, the systematically blue-shifted absorption in the H2O lines suggests expansion, presumably driven by the outflow. No infall signatures are detected. The p-H2O 111-000 and o-H2O 212-101 lines show absorption from the cold material (T ~ 10 K) in which the high-mass protostellar envelope is embedded. One-dimensional radiative transfer models are used to estimate water abundances and to further study the kinematics of the region. We show that the emission in the rare isotopologues comes directly from the inner parts of the envelope (T > 100 K) where water ices in the dust mantles evaporate and the gas-phase abundance increases. The resulting jump in the water abundance (with a constant inner abundance of 10^{-4}) is needed to reproduce the o-H17O 110-101 and p-H18O 111-000 spectra in our models. We estimate water abundances of 10^{-8} to 10^{-9} in the outer parts of the envelope (T < 100 K). The possibility of two protostellar objects contributing to the emission is discussed., Accepted for publication in the A&A HIFI special issue
Published: 2010
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20. Sensitive limits on the abundance of cold water vapor in the DM Tau protoplanetary disk

Author: T. A. Bell, Per Bjerkeli, A. Baudry, E. F. van Dishoeck, Friedrich Wyrowski, J. Santiago-Garcia, Jeffrey K. J. Fogel, Christian Brinch, D. Johnstone, Rene Plume, Fabien Daniel, Christophe Risacher, S. Bruderer, David A. Neufeld, Steven D. Doty, R. Shipman, J. Stutzki, Paola Caselli, Olja Panić, G. J. Herczeg, A. Fuente, Aggm Tielens, J. R. Goicoechea, Michael Olberg, G. A. Blake, C. Codella, E. A. Bergin, M. Fich, Bengt Larsson, Th. de Graauw, Berengere Parise, René Liseau, Rafael Bachiller, M. Benedettini, Paul Hartogh, Brunella Nisini, J. C. Pearson, Ryszard Szczerba, Mario Tafalla, Jes K. Jørgensen, F. F. S. van der Tak, Umut A. Yildiz, Michiel R. Hogerheijde, T. A. van Kempen, M. Marseille, Carsten Dominik, Frank Helmich, J. Braine, P. J. Encrenaz, Arnold O. Benz, Sylvain Bontemps, Susanne F. Wampfler, Fabrice Herpin, C. McCoey, P. Saraceno, Lars E. Kristensen, R. Visser, Teresa Giannini, José Cernicharo, T. Jacq, Willem Jellema, Gary J. Melnick, A. M. di Giorgio, Dariusz C. Lis, Low Energy Astrophysics (API, FNWI), Astronomy, Kapteyn Astronomical Institute, Harvard-Smithsonian Center for Astrophysics (CfA), Harvard University [Cambridge]-Smithsonian Institution, Laboratoire Optimisation de la Conception et Ingénierie de l'Environnement (LOCIE), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Centro de Investigaciones Biológicas (CSIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Amsterdam [Amsterdam] (UvA), 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 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), Civilisations atlantiques & Archéosciences (C2A), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ministère de la Culture et de la Communication (MCC)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Université de Nantes - UFR Histoire, Histoire de l'Art et Archéologie (UFR HHAA), Université de Nantes (UN)-Université de Nantes (UN), INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), 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), SRON Netherlands Institute for Space Research (SRON), INAF - Osservatorio Astronomico di Roma (OAR), Onsala Space Observatory, Chalmers University of Technology [Göteborg], 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, ESO, European Southern Observatory (ESO), Istituto di Fisica dello Spazio Interplanetario (IFSI), Consiglio Nazionale delle Ricerche (CNR), Max-Planck-Institut für Radioastronomie (MPIFR), Max Planck Institute for Solar System Research (MPS), Max-Planck-Gesellschaft, Harvard University-Smithsonian Institution, 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), École normale supérieure - Paris (ENS-PSL), 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), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Max-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research (MPS), Smithsonian Institution-Harvard University [Cambridge], Université de Nantes - UFR Histoire, Histoire de l'Art et Archéologie (UFR HHAA), and Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture et de la Communication (MCC)
Subjects: DESORPTION, Abundance (chemistry), [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], Astronomy, [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], FOS: Physical sciences, DUST, Astrophysics, Protoplanetary disk, 01 natural sciences, ISM: abundances, MOLECULES, PLANET-FORMING REGION, CIRCUMSTELLAR DISKS, 0103 physical sciences, H2O, SPECTRA, Solar and Stellar Astrophysics, Emission spectrum, 010306 general physics, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Line (formation), Physics, Earth and Planetary Astrophysics (astro-ph.EP), Spectrometer, [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], Research Programm of Institute for Mathematics, Astrophysics and Particle Physics, protoplanetary disks, Astronomy and Astrophysics, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], ISM: molecules, EVOLUTION, Astrophysics - Solar and Stellar Astrophysics, 13. Climate action, Space and Planetary Science, GAS, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Earth and Planetary Astrophysics, Water ice, Water vapor, Intensity (heat transfer), STARS, Astrophysics - Earth and Planetary Astrophysics
Abstract: We performed a sensitive search for the ground-state emission lines of ortho- and para-water vapor in the DM Tau protoplanetary disk using the Herschel/HIFI instrument. No strong lines are detected down to 3sigma levels in 0.5 km/s channels of 4.2 mK for the 1_{10}--1_{01} line and 12.6 mK for the 1_{11}--0_{00} line. We report a very tentative detection, however, of the 1_{10}--1_{01} line in the Wide Band Spectrometer, with a strength of T_{mb}=2.7 mK, a width of 5.6 km/s and an integrated intensity of 16.0 mK km/s. The latter constitutes a 6sigma detection. Regardless of the reality of this tentative detection, model calculations indicate that our sensitive limits on the line strengths preclude efficient desorption of water in the UV illuminated regions of the disk. We hypothesize that more than 95-99% of the water ice is locked up in coagulated grains that have settled to the midplane., 5 pages, 3 figures. Accepted for publication in the Herschel HIFI special issue of A&A
Published: 2010
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21. Water abundance variations around high-mass protostars: HIFI observations of the DR21 region

Author: F. F. S. van der Tak, M. G. Marseille, F. Herpin, F. Wyrowski, A. Baudry, S. Bontemps, J. Braine, S. Doty, W. Frieswijk, G. Melnick, R. Shipman, E. F. van Dishoeck, A. O. Benz, P. Caselli, M. Hogerheijde, D. Johnstone, R. Liseau, R. Bachiller, M. Benedettini, E. Bergin, P. Bjerkeli, G. Blake, S. Bruderer, J. Cernicharo, C. Codella, F. Daniel, A. M. di Giorgio, C. Dominik, P. Encrenaz, M. Fich, A. Fuente, T. Giannini, J. Goicoechea, Th. de Graauw, F. Helmich, G. Herczeg, J. Jørgensen, L. Kristensen, B. Larsson, D. Lis, C. McCoey, D. Neufeld, B. Nisini, M. Olberg, B. Parise, J. Pearson, R. Plume, C. Risacher, J. Santiago, P. Saraceno, M. Tafalla, T. van Kempen, R. Visser, S. Wampfler, U. Yıldız, L. Ravera, P. Roelfsema, O. Siebertz, D. Teyssier, Low Energy Astrophysics (API, FNWI), Kapteyn Astronomical Institute [Groningen], University of Groningen [Groningen], 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), 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 Sciences et Technologies - Bordeaux 1, SRON Netherlands Institute for Space Research (SRON), Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB), Max-Planck-Institut für Radioastronomie (MPIFR), and Astronomy
Subjects: 010504 meteorology & atmospheric sciences, LINE EMISSION, Continuum (design consultancy), FOS: Physical sciences, CYGNUS-X, Astrophysics, 01 natural sciences, Spectral line, STAR-FORMATION, RADIATIVE-TRANSFER, ISM: individual objects: DR21, YOUNG STARS, EXCITATION, 0103 physical sciences, ABSORPTION, Radiative transfer, Protostar, Absorption (electromagnetic radiation), 010303 astronomy & astrophysics, QB, 0105 earth and related environmental sciences, Line (formation), H-2, Physics, stars: formation, astrochemistry, Star formation, [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], MONTE-CARLO METHOD, Astronomy and Astrophysics, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], Astrophysics - Astrophysics of Galaxies, ISM: molecules, EVOLUTION, 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Outflow, Galaxy Astrophysics
Abstract: Water is a key molecule in the star formation process, but its spatial distribution in star-forming regions is not well known. We study the distribution of dust continuum and H2O and 13CO line emission in DR21, a luminous star-forming region with a powerful outflow and a compact HII region. Herschel-HIFI spectra near 1100 GHz show narrow 13CO 10-9 emission and H2O 1(11)-0(00) absorption from the dense core and broad emission from the outflow in both lines. The H2O line also shows absorption by a foreground cloud known from ground-based observations of low-J CO lines. The dust continuum emission is extended over 36" FWHM, while the 13CO and H2O lines are confined to ~24" or less. The foreground absorption appears to peak further North than the other components. Radiative transfer models indicate very low abundances of ~2e-10 for H2O and ~8e-7 for 13CO in the dense core, and higher H2O abundances of ~4e-9 in the foreground cloud and ~7e-7 in the outflow. The high H2O abundance in the warm outflow is probably due to the evaporation of water-rich icy grain mantles, while the H2O abundance is kept down by freeze-out in the dense core and by photodissociation in the foreground cloud., Comment: Accepted by A&A Letters (Herschel special issue); 4 pages, 4 figures
Published: 2010
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22. Herschel-PACS spectroscopy of the intermediate mass protostar NGC7129 FIRS 2

Author: Steven D. Doty, G. J. Herczeg, R. Shipman, E. A. Bergin, Volker Ossenkopf, R. Visser, A. Baudry, J. R. Goicoechea, Berengere Parise, A. M. di Giorgio, Michael Olberg, M. Justen, Th. de Graauw, Rafael Bachiller, W. Luinge, Fabrice Herpin, Brunella Nisini, Susanne F. Wampfler, Paola Caselli, Per Bjerkeli, Carsten Dominik, P. J. Encrenaz, Hamid Javadi, C. McCoey, Rene Plume, J. Braine, J.J. Gill, M. Fich, Frank Helmich, M. Benedettini, Friedrich Wyrowski, W. M. Laauwen, T. Jacq, M. Marseille, D. Johnstone, Umut A. Yildiz, A. Fuente, P. Saraceno, Gary J. Melnick, Sylvain Bontemps, E. F. van Dishoeck, F. F. S. van der Tak, René Liseau, John E. Pearson, P. Gaufre, Michiel R. Hogerheijde, T. A. van Kempen, Christophe Risacher, J. Santiago, D. C. Lis, G. A. Blake, C. Codella, Mario Tafalla, Arnold O. Benz, Fabien Daniel, S. Bruderer, Bengt Larsson, Jes K. Jørgensen, José Cernicharo, Lars E. Kristensen, Teresa Giannini, Low Energy Astrophysics (API, FNWI), Astronomy, INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), Centro de Investigaciones Biológicas (CSIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), 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), 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 Sciences et Technologies - Bordeaux 1, Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB), Laboratoire Optimisation de la Conception et Ingénierie de l'Environnement (LOCIE), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Amsterdam [Amsterdam] (UvA), 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), SRON Netherlands Institute for Space Research (SRON), INAF - Osservatorio Astronomico di Roma (OAR), Onsala Space Observatory, Chalmers University of Technology [Göteborg], 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, ESO, European Southern Observatory (ESO), Istituto di Fisica dello Spazio Interplanetario (IFSI), Consiglio Nazionale delle Ricerche (CNR), Max-Planck-Institut für Radioastronomie (MPIFR), 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), École normale supérieure - Paris (ENS-PSL), 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), and National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR)
Subjects: Astronomy, FOS: Physical sciences, Astrophysics, I, 01 natural sciences, Spectral line, STAR-FORMATION, 0103 physical sciences, Protostar, OUTFLOW, Emission spectrum, 010306 general physics, Spectroscopy, 010303 astronomy & astrophysics, Envelope (waves), Line (formation), QB, Physics, stars: formation, Research Programm of Institute for Mathematics, Astrophysics and Particle Physics, [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], Astronomy and Astrophysics, Spectral bands, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], YOUNG STELLAR OBJECTS, REGIONS, Astrophysics - Astrophysics of Galaxies, ISM: molecules, EVOLUTION, Orders of magnitude (time), 13. Climate action, Space and Planetary Science, GAS, Astrophysics of Galaxies (astro-ph.GA), ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Galaxy Astrophysics, HH 46
Abstract: Aims: We present preliminary results of the first Herschel spectroscopic observations of NGC7129 FIRS2, an intermediate mass star-forming region. We attempt to interpret the observations in the framework of an in-falling spherical envelope. Methods: The PACS instrument was used in line spectroscopy mode (R=1000-5000) with 15 spectral bands between 63 and 185 microns. This provided good detections of 26 spectral lines seen in emission, including lines of H2O, CO, OH, O I, and C II. Results: Most of the detected lines, particularly those of H2O and CO, are substantially stronger than predicted by the spherical envelope models, typically by several orders of magnitude. In this paper we focus on what can be learned from the detected CO emission lines. Conclusions: It is unlikely that the much stronger than expected line emission arises in the (spherical) envelope of the YSO. The region hot enough to produce such high excitation lines within such an envelope is too small to produce the amount of emission observed. Virtually all of this high excitation emission must arise in structures such as as along the walls of the outflow cavity with the emission produced by a combination of UV photon heating and/or non-dissociative shocks., Comment: A&A Special Issue on Herschel
Published: 2010
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23. Water abundances in high-mass protostellar envelopes: Herschel observations with HIFI

Author: M. G. Marseille, F. F. S. van der Tak, F. Herpin, F. Wyrowski, L. Chavarría, B. Pietropaoli, A. Baudry, S. Bontemps, J. Cernicharo, T. Jacq, W. Frieswijk, R. Shipman, E. F. van Dishoeck, R. Bachiller, M. Benedettini, A. O. Benz, E. Bergin, P. Bjerkeli, G. A. Blake, J. Braine, S. Bruderer, P. Caselli, E. Caux, C. Codella, F. Daniel, P. Dieleman, A. M. di Giorgio, C. Dominik, S. D. Doty, P. Encrenaz, M. Fich, A. Fuente, T. Gaier, T. Giannini, J. R. Goicoechea, Th. de Graauw, F. Helmich, G. J. Herczeg, M. R. Hogerheijde, B. Jackson, H. Javadi, W. Jellema, D. Johnstone, J. K. Jørgensen, D. Kester, L. E. Kristensen, B. Larsson, W. Laauwen, D. Lis, R. Liseau, W. Luinge, C. McCoey, A. Megej, G. Melnick, D. Neufeld, B. Nisini, M. Olberg, B. Parise, J. C. Pearson, R. Plume, C. Risacher, P. Roelfsema, J. Santiago-García, P. Saraceno, P. Siegel, J. Stutzki, M. Tafalla, T. A. van Kempen, R. Visser, S. F. Wampfler, U. A. Yıldız, Low Energy Astrophysics (API, FNWI), 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, SRON Netherlands Institute for Space Research (SRON), Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB), Kapteyn Astronomical Institute [Groningen], University of Groningen [Groningen], Max-Planck-Institut für Radioastronomie (MPIFR), and Astronomy
Subjects: 010504 meteorology & atmospheric sciences, Astronomy, FOS: Physical sciences, Astrophysics, 01 natural sciences, ISM: abundances, STAR-FORMATION, REGION, RADIATIVE-TRANSFER, Abundance (ecology), EXCITATION, 0103 physical sciences, Radiative transfer, H2O, Protostar, Absorption (electromagnetic radiation), 010303 astronomy & astrophysics, QB, 0105 earth and related environmental sciences, Envelope (waves), Line (formation), Physics, Line-of-sight, extinction, [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], Star formation, Research Programm of Institute for Mathematics, Astrophysics and Particle Physics, MONTE-CARLO METHOD, PROTOSTARS, CORES, Astronomy and Astrophysics, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], Astrophysics - Astrophysics of Galaxies, ISM: molecules, EVOLUTION, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, dust, extinction, dust, EMISSION, Galaxy Astrophysics
Abstract: We derive the dense core structure and the water abundance in four massive star-forming regions which may help understand the earliest stages of massive star formation. We present Herschel-HIFI observations of the para-H2O 1_11-0_00 and 2_02-1_11 and the para-H2-18O 1_11-0_00 transitions. The envelope contribution to the line profiles is separated from contributions by outflows and foreground clouds. The envelope contribution is modelled using Monte-Carlo radiative transfer codes for dust and molecular lines (MC3D and RATRAN), with the water abundance and the turbulent velocity width as free parameters. While the outflows are mostly seen in emission in high-J lines, envelopes are seen in absorption in ground-state lines, which are almost saturated. The derived water abundances range from 5E-10 to 4E-8 in the outer envelopes. We detect cold clouds surrounding the protostar envelope, thanks to the very high quality of the Herschel-HIFI data and the unique ability of water to probe them. Several foreground clouds are also detected along the line of sight. The low H2O abundances in massive dense cores are in accordance with the expectation that high densities and low temperatures lead to freeze-out of water on dust grains. The spread in abundance values is not clearly linked to physical properties of the sources., Comment: 8 pages, 5 figures, accepted for publication the 15/07/2010 by Astronomy&Astrophysics as a letter in the Herschel-HIFI special issue
Published: 2010
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24. Herschel observations of the hydroxyl radical (OH) in young stellar objects

Author: S. F. Wampfler, G. J. Herczeg, S. Bruderer, A. O. Benz, E. F. van Dishoeck, L. E. Kristensen, R. Visser, S. D. Doty, M. Melchior, T. A. van Kempen, U. A. Yıldız, C. Dedes, J. R. Goicoechea, A. Baudry, G. Melnick, R. Bachiller, M. Benedettini, E. Bergin, P. Bjerkeli, G. A. Blake, S. Bontemps, J. Braine, P. Caselli, J. Cernicharo, C. Codella, F. Daniel, A. M. di Giorgio, C. Dominik, P. Encrenaz, M. Fich, A. Fuente, T. Giannini, Th. de Graauw, F. Helmich, F. Herpin, M. R. Hogerheijde, T. Jacq, D. Johnstone, J. K. Jørgensen, B. Larsson, D. Lis, R. Liseau, M. Marseille, C. Mc Coey, D. Neufeld, B. Nisini, M. Olberg, B. Parise, J. C. Pearson, R. Plume, C. Risacher, J. Santiago-García, P. Saraceno, R. Shipman, M. Tafalla, F. F. S. van der Tak, F. Wyrowski, P. Roelfsema, W. Jellema, P. Dieleman, E. Caux, J. Stutzki, 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 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), 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 Optimisation de la Conception et Ingénierie de l'Environnement (LOCIE), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), Centro de Investigaciones Biológicas (CSIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Amsterdam [Amsterdam] (UvA), SRON Netherlands Institute for Space Research (SRON), INAF - Osservatorio Astronomico di Roma (OAR), Onsala Space Observatory, Chalmers University of Technology [Göteborg], 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, ESO, European Southern Observatory (ESO), Istituto di Fisica dello Spazio Interplanetario (IFSI), Consiglio Nazionale delle Ricerche (CNR), Kapteyn Astronomical Institute [Groningen], University of Groningen [Groningen], Max-Planck-Institut für Radioastronomie (MPIFR), Low Energy Astrophysics (API, FNWI), École normale supérieure - Paris (ENS-PSL), 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 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), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), and Astronomy
Subjects: Young stellar object, Astronomy, Flux, FOS: Physical sciences, Astrophysics, MOLECULAR CLOUD, CO OBSERVATIONS, 01 natural sciences, PHYSICAL STRUCTURE, Luminosity, chemistry.chemical_compound, Far infrared, 0103 physical sciences, Solar and Stellar Astrophysics, 010306 general physics, Absorption (electromagnetic radiation), Spectroscopy, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Line (formation), QB, Physics, stars: formation, PACS SPECTROSCOPY, [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], Research Programm of Institute for Mathematics, Astrophysics and Particle Physics, astrochemistry, MASS PROTOSTARS, Astronomy and Astrophysics, CLASS-0 SOURCES, PHOTODISSOCIATION, FIRS 2, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], ISM: molecules, ISM: jets and outflows, chemistry, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, ISM: individual objects: HH 46, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Hydroxyl radical, EMISSION, HH 46
Abstract: Water in Star-forming regions with Herschel (WISH) is a Herschel Key Program investigating the water chemistry in young stellar objects (YSOs) during protostellar evolution. Hydroxyl (OH) is one of the reactants in the chemical network most closely linked to the formation and destruction of H2O. High-temperature chemistry connects OH and H2O through the OH + H2 H2O + H reactions. Formation of H2O from OH is efficient in the high-temperature regime found in shocks and the innermost part of protostellar envelopes. Moreover, in the presence of UV photons, OH can be produced from the photo-dissociation of H2O. High-resolution spectroscopy of the OH 163.12 micron triplet towards HH 46 and NGC 1333 IRAS 2A was carried out with the Heterodyne Instrument for the Far Infrared (HIFI) on board Herschel. The low- and intermediate-mass YSOs HH 46, TMR 1, IRAS 15398-3359, DK Cha, NGC 7129 FIRS 2, and NGC 1333 IRAS 2A were observed with the Photodetector Array Camera and Spectrometer (PACS) in four transitions of OH and two [OI] lines. The OH transitions at 79, 84, 119, and 163 micron and [OI] emission at 63 and 145 micron were detected with PACS towards the class I low-mass YSOs as well as the intermediate-mass and class I Herbig Ae sources. No OH emission was detected from the class 0 YSO NGC 1333 IRAS 2A, though the 119 micron was detected in absorption. With HIFI, the 163.12 micron was not detected from HH 46 and only tentatively detected from NGC 1333 IRAS 2A. The combination of the PACS and HIFI results for HH 46 constrains the line width (FWHM > 11 km/s) and indicates that the OH emission likely originates from shocked gas. This scenario is supported by trends of the OH flux increasing with the [OI] flux and the bolometric luminosity. Similar OH line ratios for most sources suggest that OH has comparable excitation temperatures despite the different physical properties of the sources., Comment: Accepted for publication in Astronomy and Astrophysics (Herschel special issue)
Published: 2010
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25. Herschel/HIFI observations of high-J CO lines in the NGC 1333 low-mass star-forming region

Author: Fabrice Herpin, José Cernicharo, Carsten Dominik, A. Di Giorgio, T. Jacq, Pierre Encrenaz, Doug Johnstone, Claudio Codella, Steven D. Doty, M. Fich, F. F. S. van der Tak, Jes K. Jørgensen, Gregory J. Herczeg, Volker Ossenkopf, Paola Caselli, S. F. Wampfler, M. Marseille, Edwin Bergin, Per Bjerkeli, T. A. van Kempen, Michiel R. Hogerheijde, Sylvain Bontemps, Jonathan Braine, Alain Baudry, Asunción Fuente, Juergen Stutzki, J. Santiago-Garcia, E. Deul, Ruud Visser, Willem Jellema, René Liseau, Javier R. Goicoechea, Paolo Saraceno, Christophe Risacher, Umut A. Yildiz, David A. Neufeld, Berengere Parise, Milena Benedettini, Pieter Dieleman, Frank Helmich, E. F. van Dishoeck, R. Schieder, John C. Pearson, Dariusz C. Lis, Lars E. Kristensen, F.-C. Liu, T. Giannini, Arnold O. Benz, F. Daniel, Friedrich Wyrowski, Rafael Bachiller, Geoffrey A. Blake, Russel Shipman, Alexander G. G. M. Tielens, Th. de Graauw, Michael Olberg, Gary J. Melnick, C. McCoey, B. Larsson, Brunella Nisini, R. Plume, M. Tafalla, Simon Bruderer, 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 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), Laboratoire Optimisation de la Conception et Ingénierie de l'Environnement (LOCIE), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), Centro de Investigaciones Biológicas (CSIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Amsterdam [Amsterdam] (UvA), 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), SRON Netherlands Institute for Space Research (SRON), INAF - Osservatorio Astronomico di Roma (OAR), Onsala Space Observatory, Chalmers University of Technology [Göteborg], 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, ESO, European Southern Observatory (ESO), Istituto di Fisica dello Spazio Interplanetario (IFSI), Consiglio Nazionale delle Ricerche (CNR), Max-Planck-Institut für Radioastronomie (MPIFR), Astronomy, 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), École normale supérieure - Paris (ENS-PSL), 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), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), and Low Energy Astrophysics (API, FNWI)
Subjects: 010504 meteorology & atmospheric sciences, Astronomy, Evaporation, FOS: Physical sciences, DUST, Astrophysics, Star (graph theory), 01 natural sciences, DENSE CORES, 0103 physical sciences, Radiative transfer, Protostar, WATER, Solar and Stellar Astrophysics, Isotopologue, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), QB, 0105 earth and related environmental sciences, Envelope (waves), Line (formation), Physics, stars: formation, [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], astrochemistry, NGC-1333 IRAS-4, PROTOSTARS, Astronomy and Astrophysics, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], H2CO, ISM: molecules, EVOLUTION, ENVELOPES, ISM: jets and outflows, Astrophysics - Solar and Stellar Astrophysics, 13. Climate action, Space and Planetary Science, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, ABUNDANCE, Low Mass, HIFI
Abstract: Herschel-HIFI observations of high-J lines (up to J_u=10) of 12CO, 13CO and C18O are presented toward three deeply embedded low-mass protostars, NGC 1333 IRAS 2A, IRAS 4A, and IRAS 4B, obtained as part of the Water In Star-forming regions with Herschel (WISH) key program. The spectrally-resolved HIFI data are complemented by ground-based observations of lower-J CO and isotopologue lines. The 12CO 10-9 profiles are dominated by broad (FWHM 25-30 km s^-1) emission. Radiative transfer models are used to constrain the temperature of this shocked gas to 100-200 K. Several CO and 13CO line profiles also reveal a medium-broad component (FWHM 5-10 km s^-1), seen prominently in H2O lines. Column densities for both components are presented, providing a reference for determining abundances of other molecules in the same gas. The narrow C18O 9-8 lines probe the warmer part of the quiescent envelope. Their intensities require a jump in the CO abundance at an evaporation temperature around 25 K, thus providing new direct evidence for a CO ice evaporation zone around low-mass protostars., Comment: 8 pages, 9 figures
Published: 2010
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26. Water in low-mass star-forming regions with Herschel . HIFI spectroscopy of NGC 1333

Author: Rafael Bachiller, Christophe Risacher, N. Whyborn, Steven D. Doty, A. Baudry, Per Bjerkeli, David A. Neufeld, Rene Plume, R. Shipman, F.-C. Liu, Pieter Dieleman, Sylvain Bontemps, Fabrice Herpin, E. F. van Dishoeck, M. Benedettini, Pieter R. Roelfsema, C. McCoey, José Cernicharo, Paola Caselli, J. Stutzki, Carsten Dominik, Paolo Saraceno, J. Braine, R. Visser, M. Fich, Susanne F. Wampfler, Frank Helmich, C. Codella, A. de Jonge, A. M. di Giorgio, Lars E. Kristensen, Friedrich Wyrowski, Geoffrey A. Blake, Teresa Giannini, E. Deul, Dariusz C. Lis, F. F. S. van der Tak, Volker Ossenkopf, J. Santiago-Garcia, Christian Brinch, M. Marseille, Th. de Graauw, Bengt Larsson, T. Jacq, Umut A. Yildiz, Mario Tafalla, A. Fuente, Jes K. Jørgensen, Arnold O. Benz, Fabien Daniel, Gary J. Melnick, S. Bruderer, Berengere Parise, Brunella Nisini, P. J. Encrenaz, Michiel R. Hogerheijde, T. A. van Kempen, René Liseau, D. A. Beintema, D. Johnstone, Aggm Tielens, J. R. Goicoechea, Michael Olberg, Michael J. Kaufman, J. C. Pearson, G. J. Herczeg, E. A. Bergin, 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 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 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), Harvard-Smithsonian Center for Astrophysics (CfA), Smithsonian Institution-Harvard University [Cambridge], Laboratoire Optimisation de la Conception et Ingénierie de l'Environnement (LOCIE), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), Centro de Investigaciones Biológicas (CSIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Amsterdam [Amsterdam] (UvA), 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), SRON Netherlands Institute for Space Research (SRON), INAF - Osservatorio Astronomico di Roma (OAR), Onsala Space Observatory, Chalmers University of Technology [Göteborg], ESO, European Southern Observatory (ESO), Istituto di Fisica dello Spazio Interplanetario (IFSI), Consiglio Nazionale delle Ricerche (CNR), Max-Planck-Institut für Radioastronomie (MPIFR), Astronomy, Low Energy Astrophysics (API, FNWI), 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), Harvard University-Smithsonian Institution, École normale supérieure - Paris (ENS-PSL), and National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR)
Subjects: 010504 meteorology & atmospheric sciences, Astronomy, Young stellar object, FOS: Physical sciences, PROTOSTELLAR ENVELOPES, Astrophysics, PHYSICAL STRUCTURE, 01 natural sciences, DISK, Abundance (ecology), 0103 physical sciences, Protostar, OUTFLOW, Solar and Stellar Astrophysics, Spectroscopy, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), 0105 earth and related environmental sciences, Envelope (waves), Line (formation), QB, Physics, stars: formation, astrochemistry, Research Programm of Institute for Mathematics, Astrophysics and Particle Physics, [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], NGC-1333 IRAS-4, PROTOSTARS, Astronomy and Astrophysics, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], ISM: molecules, ISM: jets and outflows, Astrophysics - Solar and Stellar Astrophysics, 13. Climate action, Space and Planetary Science, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, VAPOR, ABUNDANCE, Outflow, SUBMILLIMETER, EMISSION, Low Mass, ISM: individual objects: NGC 1333
Abstract: 'Water In Star-forming regions with Herschel' (WISH) is a key programme dedicated to studying the role of water and related species during the star-formation process and constraining the physical and chemical properties of young stellar objects. The Heterodyne Instrument for the Far-Infrared (HIFI) on the Herschel Space Observatory observed three deeply embedded protostars in the low-mass star-forming region NGC1333 in several H2-16O, H2-18O, and CO transitions. Line profiles are resolved for five H16O transitions in each source, revealing them to be surprisingly complex. The line profiles are decomposed into broad (>20 km/s), medium-broad (~5-10 km/s), and narrow (20 km/s), indicating that its physical origin is the same as for the broad H2-16O component. In one of the sources, IRAS4A, an inverse P Cygni profile is observed, a clear sign of infall in the envelope. From the line profiles alone, it is clear that the bulk of emission arises from shocks, both on small (, Accepted for publication in the A&A HIFI special issue
Published: 2010
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27. Variations in H2O+/H2O ratios toward massive star-forming regions

Author: Carsten Dominik, Michiel R. Hogerheijde, Doug Johnstone, Claudio Codella, Steven D. Doty, Michael Olberg, Th. de Graauw, Rafael Bachiller, M. Marseille, Christophe Risacher, Gary J. Melnick, Pierre Encrenaz, Russel Shipman, J. Santiago, Javier R. Goicoechea, R. Plume, Jes K. Jørgensen, M. Benedettini, T. Jacq, Geoffrey A. Blake, S. F. Wampfler, Lars E. Kristensen, Jonathan Braine, Wilfred Frieswijk, Gregory J. Herczeg, Frank Helmich, Maryvonne Gerin, T. Giannini, Pieter R. Roelfsema, Umut A. Yildiz, Berengere Parise, Pieter Dieleman, A. Di Giorgio, Simon Bruderer, John H. Black, de A Jonge, M. Fich, D. C. Lis, John C. Pearson, Edwin Bergin, L. Chavarria, Per Bjerkeli, T. A. van Kempen, Friedrich Wyrowski, Paolo Saraceno, Fabrice Herpin, M. Tafalla, F. F. S. van der Tak, Sylvain Bontemps, René Liseau, José Cernicharo, E. Falgarone, D. A. Beintema, Asunción Fuente, Juergen Stutzki, F. Daniel, Ruud Visser, Volker Ossenkopf, Paola Caselli, Arnold O. Benz, N. Whyborn, Alain Baudry, E. F. van Dishoeck, C. McCoey, B. Larsson, Brunella Nisini, Low Energy Astrophysics (API, FNWI), Max-Planck-Institut für Radioastronomie (MPIFR), 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 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), SRON Netherlands Institute for Space Research (SRON), INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), Laboratoire Optimisation de la Conception et Ingénierie de l'Environnement (LOCIE), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Centro de Investigaciones Biológicas (CSIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Amsterdam [Amsterdam] (UvA), 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), INAF - Osservatorio Astronomico di Roma (OAR), Onsala Space Observatory, Chalmers University of Technology [Göteborg], 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, ESO, European Southern Observatory (ESO), Istituto di Fisica dello Spazio Interplanetario (IFSI), Consiglio Nazionale delle Ricerche (CNR), 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), 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), 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), École normale supérieure - Paris (ENS-PSL), 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), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), 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), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), and Astronomy
Subjects: FOS: Physical sciences, LINE, Astrophysics, LASER MAGNETIC-RESONANCE, Star (graph theory), ISM: clouds, 01 natural sciences, CHEMISTRY, 0103 physical sciences, Cluster (physics), Protostar, 010306 general physics, Absorption (electromagnetic radiation), 010303 astronomy & astrophysics, QB, Physics, stars: formation, Line-of-sight, [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], DR21, ASTRONOMY, Astronomy and Astrophysics, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], Astrophysics - Astrophysics of Galaxies, ISM: molecules, W51, Interstellar medium, Stars, Early results, 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), SIGHT, submillimeter: ISM, HIFI, Galaxy Astrophysics
Abstract: Early results from the Herschel Space Observatory revealed the water cation H2O+ to be an abundant ingredient of the interstellar medium. Here we present new observations of the H2O and H2O+ lines at 1113.3 and 1115.2 GHz using the Herschel Space Observatory toward a sample of high-mass star-forming regions to observationally study the relation between H2O and H2O+ . Nine out of ten sources show absorption from H2O+ in a range of environments: the molecular clumps surrounding the forming and newly formed massive stars, bright high-velocity outflows associated with the massive protostars, and unrelated low-density clouds along the line of sight. Column densities per velocity component of H2 O+ are found in the range of 10^12 to a few 10^13 cm-2 . The highest N(H2O+) column densities are found in the outflows of the sources. The ratios of H2O+/H2O are determined in a range from 0.01 to a few and are found to differ strongly between the observed environments with much lower ratios in the massive (proto)cluster envelopes (0.01-0.1) than in outflows and diffuse clouds. Remarkably, even for source components detected in H2O in emission, H2O+ is still seen in absorption., Comment: 5 pages, 4 figures, accepted for publication as a letter in the A&A Herschel-HIFI special issue
Published: 2010
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28. The Herschel-Heterodyne Instrument for the Far-Infrared (HIFI): instrument and pre-launch testing

Author: Michel Perault, René Liseau, Hubregt J. Visser, C. Kramer, Rudolf Schieder, Do Kester, L. Ravera, Jon Kawamura, Anthony Murphy, Bob Kruizenga, Xander Tielens, Fabrice Herpin, Nicolas Biver, Douwe Beintema, Thijs de Graauw, Willem Jellema, Jean-Michel Krieg, P. Planesas, Peer Zaal, L. Dubbeldam, John Ward, Claudia Comito, Emmanuel Dartois, Klaas Wildeman, Patrick W. Morris, Rolf Güsten, David Teyssier, John Pearson, Sabine Phillip, Rafael Moreno, N. Honingh, Gert de Lange, Willem Luinge, R. Shipman, Harald Franz Arno Merkel, H. Jacobs, Albert Naber, Frank Schmuelling, Steve Lord, Bengt Larsson, Adwin Boogert, H. Aarts, Volker Ossenkopf, Charlotte Vastel, Kees Wafelbakker, Teun M. Klapwijk, Christian Leinz, Ian Delorme, Pieter Dieleman, Piotr Orleanski, Anna DiGiorgio, Mirek Rataj, Anthony Marston, Sergey Cherednichenko, Frank Helmich, Roonan Higgins, Jürgen Stutzki, W. M. Laauwen, Albrecht de Jonge, M. Fich, Jesús Martín-Pintado, Arnold O. Benz, Thomas G. Phillips, Ryszard Szczerba, Odile Coeur-Joly, T. Klein, Francois Boulanger, Peter Roelfsema, Paolo Saraceno, K. Edwards, R. Huisman, Nick Whyborn, Micheal Olberg, Jacob Kooi, Emmanuel Caux, 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, California Institute of Technology (CALTECH), 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), 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), Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology [Gothenburg, Sweden], Laboratoire de Cosmologie, Astrophysique Stellaire & Solaire, de Planétologie et de Mécanique des Fluides (CASSIOPEE), 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, 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), SRON Netherlands Institute for Space Research (SRON), Institut de biologie et chimie des protéines [Lyon] (IBCP), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Department of physical chemistry, Uppsala University, Max-Planck-Institut für Radioastronomie (MPIFR), 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), Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB), Institute of Medical Technology and Tampere University Hospital, University of Tampere [Finland], 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), KOSMA, I. Physikalisches Institut, Universität zu Köln, Institut de Microélectronique, Electromagnétisme et Photonique (IMEP), Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique de Grenoble (INPG)-Université Joseph Fourier - Grenoble 1 (UJF), CSIRO Materials Sciences and Engineering, Commonwealth Scientific and Industrial Research Organisation [Canberra] (CSIRO), Instituto de Estructura de la Materia (IEM), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Onsala Space Observatory, Chalmers University of Technology [Göteborg], Department of Physics and Astronomy [Leicester], University of Leicester, 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), 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), Photonics Centre, University College Cork (UCC), Dept Pathol & Microbiol, Université de Montréal (UdeM)-Faculté de médecine vétérinaire, Oschmann, Jacobus M., Jr., de Graauw, Mattheus W. M., MacEwen, Howard A., 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 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 Nice Sophia Antipolis (1965 - 2019) (UNS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS-PSL), Universität zu Köln = University of Cologne, Université Joseph Fourier - Grenoble 1 (UJF)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), 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), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Heterodyne, [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], business.industry, Frequency band, Local oscillator, Bolometer, Superheterodyne receiver, [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], 020206 networking & telecommunications, 02 engineering and technology, 01 natural sciences, 7. Clean energy, Radio spectrum, law.invention, Optics, Far infrared, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Ka band, business, 010303 astronomy & astrophysics, Remote sensing
Abstract: International audience; This paper describes the Heterodyne Instrument for the Far-Infrared (HIFI), to be launched onboard of ESA's Herschel Space Observatory, by 2008. It includes the first results from the instrument level tests. The instrument is designed to be electronically tuneable over a wide and continuous frequency range in the Far Infrared, with velocity resolutions better than 0.1 km/s with a high sensitivity. This will enable detailed investigations of a wide variety of astronomical sources, ranging from solar system objects, star formation regions to nuclei of galaxies. The instrument comprises 5 frequency bands covering 480-1150 GHz with SIS mixers and a sixth dual frequency band, for the 1410-1910 GHz range, with Hot Electron Bolometer Mixers (HEB). The Local Oscillator (LO) subsystem consists of a dedicated Ka-band synthesizer followed by 7 times 2 chains of frequency multipliers, 2 chains for each frequency band. A pair of Auto-Correlators and a pair of Acousto-Optic spectrometers process the two IF signals from the dual-polarization front-ends to provide instantaneous frequency coverage of 4 GHz, with a set of resolutions (140 kHz to 1 MHz), better than < 0.1 km/s. After a successful qualification program, the flight instrument was delivered and entered the testing phase at satellite level. We will also report on the pre-flight test and calibration results together with the expected in-flight performance.
Published: 2008
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29. Odin observations of H2O in the Galactic Centre

Author: E. M. Gregersen, George F. Mitchell, Pierre Encrenaz, P. A. Feldman, Alain Lecacheux, Kalevi Mattila, A. O. H. Olofsson, M. Olberg, Nicholas F. H Tothill, Charles L. Curry, Roy Booth, Urban Frisk, Sun Kwok, B. Larsson, Per Bergman, Kevin Volk, A. Winnberg, M. Lindqvist, Christine D. Wilson, I. Ristorcelli, G. Olofsson, Åke Hjalmarson, M. Fich, R. Plume, Maryvonne Gerin, Fredrik von Schéele, T. Liljeström, Edith Falgarone, John H. Black, Tatsuhiko I. Hasegawa, V. Buat, L. Nordh, René Liseau, H. G. Floren, Jorma Harju, G. Serra, Aa. Sandqvist, L. E. B. Johansson, Laurent Pagani, 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), Physique des plasmas, 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 Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, 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), and Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Spiral galaxy, Absorption spectroscopy, 010308 nuclear & particles physics, Molecular cloud, Astrophysics (astro-ph), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, 01 natural sciences, Space and Planetary Science, [SDU]Sciences of the Universe [physics], 0103 physical sciences, Emission spectrum, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], 010303 astronomy & astrophysics
Abstract: The Odin satellite has been used to detect emission and absorption in the 557-GHz H2O line in the Galactic Centre towards the Sgr A* Circumnuclear Disk (CND), and the Sgr A +20 km/s and +50 km/s molecular clouds. Strong broad H2O emission lines have been detected in all three objects. Narrow H2O absorption lines are present at all three positions and originate along the lines of sight in the 3-kpc Spiral Arm, the -30 km/s Spiral Arm and the Local Sgr Spiral Arm. Broad H2O absorption lines near -130 km/s are also observed, originating in the Expanding Molecular Ring. A new molecular feature (the ``High Positive Velocity Gas'' - HPVG) has been identified in the positive velocity range of ~ +120 to +220 km/s, seen definitely in absorption against the stronger dust continuum emission from the +20 km/s and +50 km/s clouds and possibly in emission towards the position of Sgr A* CND. The 548-GHz H2_18O isotope line towards the CND is not detected at the 0.02 K (rms) level., 5 pages, 3 figures, accepted by A&A, special Odin Letters issue
Published: 2003
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30. The hot core towards the intermediate-mass protostar NGC 7129 FIRS 2

Author: Paola Caselli, Belén Tercero, C. McCoey, A. M. Lopez, T. A. van Kempen, Asunción Fuente, Umut A. Yildiz, M. Fich, D. Johnstone, Aina Palau, José Cernicharo, Ministerio de Ciencia e Innovación (España), European Commission, Generalitat de Catalunya, National Research Council of Canada, Ministerio de Economía y Competitividad (España), and Natural Sciences and Engineering Research Council of Canada
Subjects: Chemical compositions, Astrochemistry, 010504 meteorology & atmospheric sciences, Mean kinetic temperature, Stellar mass, Stars: formation, FOS: Physical sciences, Context (language use), Astrophysics, Fuels, Kinetic temperatures, 01 natural sciences, Acetone, Isomers, 0103 physical sciences, Local thermodynamic equilibrium, Protostar, Isotopologue, ISM: individual objects: NGC 7129, 010303 astronomy & astrophysics, formation [Stars], Solar and Stellar Astrophysics (astro-ph.SR), Ethylene glycol, 0105 earth and related environmental sciences, Physics, High spatial resolution, ISM: individual objects: NGC 7129 FIRS 2, Plateau de Bure Interferometer, Astronomy and Astrophysics, individual objects: NGC 7129 FIRS 2 [ISM], Molecules, Deuterium, Astrophysics - Astrophysics of Galaxies, Stars, 3. Good health, Astrophysics - Solar and Stellar Astrophysics, Sulfur dioxide, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Excited state
Abstract: [Context] This paper is dedicated to the study of the chemistry of the intermediate-mass (IM) hot core NGC 7129 FIRS 2, probably the most compact warm core found in the 2-8 M⊙ stellar mass range., [Aims] Our aim is to determine the chemical composition of the IM hot core NGC 7129 FIRS 2, and to provide new insights on the chemistry of hot cores in a more general context., [Methods] NGC 7129 FIRS 2 (hereafter, FIRS 2) is located at a distance of 1250 pc and high spatial resolution observations are required to resolve the hot core at its center. We present a molecular survey from 218 200 MHz to 221 800 MHz carried out with the IRAM Plateau de Bure Interferometer (PdBI). These observations were complemented with a long integration single-dish spectrum taken with the IRAM 30 m telescope in Pico de Veleta (Spain). We used a local thermodynamic equilibrium (LTE) single temperature code to model the whole dataset., [Results] The interferometric spectrum is crowded with a total of 300 lines from which a few dozen remain unidentified. The spectrum has been modeled with a total of 20 species and their isomers, isotopologues, and deuterated compounds. Complex molecules like methyl formate (CH3OCHO), ethanol (CH3CH2OH), glycolaldehyde (CH2OHCHO), acetone (CH3COCH3), dimethyl ether (CH3OCH 3), ethyl cyanide (CH3CH2CN), and the aGg' conformer of ethylene glycol (aGg'-(CH2OH)2) are among the detected species. The detection of vibrationally excited lines of CH 3CN, CH3OCHO, CH3OH, OCS, HC3N, and CH3CHO proves the existence of gas and dust at high temperatures. The gas kinetic temperature estimated from the vibrational lines of CH 3CN, ∼405-67 +100 K, is similar to that measured in massive hot cores. Our data allow an extensive comparison of the chemistry in FIRS 2 and the Orion hot core., [Conclusions] We find a quite similar chemistry in FIRS 2 and Orion. Most of the studied fractional molecular abundances agree within a factor of 5. Larger differences are only found for the deuterated compounds D2CO and CH2DOH and a few molecules (CH3CH2CN, SO2, HNCO and CH3CHO). Since the physical conditions are similar in both hot cores, only different initial conditions (warmer pre-collapse and collapse phase in the case of Orion) and/or different crossing times of the gas in the hot core can explain this behavior. We discuss these two scenarios., We thank the Spanish MINECO for funding support from grants CSD2009-00038, AYA2009-07304, and AYA2012-32032. D.J. is supported by the National Research Council of Canada and by a Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant. A.P. is supported by the Spanish MICINN grant AYA2011-30228-C03-02 (co-funded with FEDER funds), and by the AGAUR grant 2009SGR1172 (Catalonia).
Published: 2014
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31. The JCMT and Herschel Gould Belt Surveys: a comparison of SCUBA-2 and Herschel data of dense cores in the Taurus dark cloud L1495

Author: Kate Pattle, H. Broekhoven-Fiene, Stefano Pezzuto, Jason M. Kirk, Joseph C. Mottram, Helen Kirk, Kenneth A. Marsh, S. Walker-Smith, Jane V. Buckle, J. Di Francesco, David John Nutter, Glenn J. White, David S. Berry, Tracey Hill, Ph. André, Jaime E. Pineda, P. Palmeirim, Jennifer Hatchell, M. Fich, D. Johnstone, Vera Könyves, S. Tisi, M. J. Currie, C. Quinn, Sarah Sadavoy, T. Jenness, Derek Ward-Thompson, S. F. Beaulieu, Matthew Joseph Griffin, and C. Salji
Subjects: 010504 meteorology & atmospheric sciences, Population, F540, FOS: Physical sciences, Cloud computing, Astrophysics, F500, 01 natural sciences, Volume density, law.invention, law, 0103 physical sciences, 14. Life underwater, education, 010303 astronomy & astrophysics, QC, 0105 earth and related environmental sciences, QB, Physics, education.field_of_study, business.industry, Molecular cloud, F510, Bolometer, Astronomy, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Stars, 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), business
Abstract: We present a comparison of SCUBA-2 850-$\mu$m and Herschel 70--500-$\mu$m observations of the L1495 filament in the Taurus Molecular Cloud with the goal of characterising the SCUBA-2 Gould Belt Survey (GBS) data set. We identify and characterise starless cores in three data sets: SCUBA-2 850-$\mu$m, Herschel 250-$\mu$m, and Herschel 250-$\mu$m spatially filtered to mimic the SCUBA-2 data. SCUBA-2 detects only the highest-surface-brightness sources, principally detecting protostellar sources and starless cores embedded in filaments, while Herschel is sensitive to most of the cloud structure, including extended low-surface-brightness emission. Herschel detects considerably more sources than SCUBA-2 even after spatial filtering. We investigate which properties of a starless core detected by Herschel determine its detectability by SCUBA-2, and find that they are the core's temperature and column density (for given dust properties). For similar-temperature cores, such as those seen in L1495, the surface brightnesses of the cores are determined by their column densities, with the highest-column-density cores being detected by SCUBA-2. For roughly spherical geometries, column density corresponds to volume density, and so SCUBA-2 selects the densest cores from a population at a given temperature. This selection effect, which we quantify as a function of distance, makes SCUBA-2 ideal for identifying those cores in Herschel catalogues that are closest to forming stars. Our results can now be used by anyone wishing to use the SCUBA-2 GBS data set., Comment: MNRAS accepted, 19 pages, 14 figures

32. Odin water mapping in the Orion KL region

Author: John H. Black, G. Serra, Maryvonne Gerin, Michael Olberg, I. Ristorcelli, Bengt Larsson, E. M. Gregersen, Tatsuhiko I. Hasegawa, Aa. Sandqvist, Alain Lecacheux, Edith Falgarone, Pierre Encrenaz, G. Olofsson, Charles L. Curry, M. Fich, Hans Olofsson, H. L. Nordh, Jorma Harju, T. Liljeström, Nicholas F. H Tothill, Urban Frisk, F. von Schéele, L. E. B. Johansson, Åke Hjalmarson, René Liseau, George F. Mitchell, H. G. Floren, Kalevi Mattila, Roy Booth, P. A. Feldman, Sun Kwok, Per Bergman, Christine D. Wilson, Rene Plume, V. Buat, Gustaf Rydbeck, A. O. H. Olofsson, Kevin Volk, Laurent Pagani, 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), Physique des plasmas, 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 Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, 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), and Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, 010308 nuclear & particles physics, media_common.quotation_subject, Astronomy, Astronomy and Astrophysics, Astrophysics, 01 natural sciences, 7. Clean energy, Asymmetry, Beam size, [SDU]Sciences of the Universe [physics], Space and Planetary Science, 0103 physical sciences, Outflow, Satellite, Halo, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], 010303 astronomy & astrophysics, Line (formation), media_common
Abstract: New results from water mapping observations of the Orion KL region using the submm/mm wave satellite Odin (2.1\arcmin beam size at 557 GHz), are presented. The ortho-H2O \jkktrans{1}{1}{0}{1}{0}{1} ground state transition was observed in a 7arcminx 7arcmin rectangular grid with a spacing of 1\arcmin, while the same line of H218O was measured in two positions, Orion KL itself and 2\arcmin south of Orion KL. In the main water species, the KL molecular outflow is largely resolved from the ambient cloud and it is found to have an extension of 60\arcsec-110\arcsec. The H2O outflow profile exhibits a rather striking absorption-like asymmetry at the line centre. Self-absorption in the near (or ``blue'') part of the outflow (and possibly in foreground quiescent halo gas) is tentatively suggested to play a role here. We argue that the dominant part of the KL H218O outflow emission emanates from the compact (size ~ 15\arcsec) low-velocity flow and here estimate an H2O abundance of circa 10-5 compared to all H2 in the flow - an order of magnitude below earlier estimates of the H2O abundance in the shocked gas of the high-velocity flow. The narrow ambient cloud lines show weak velocity trends, both in the N-S and E-W directions. H218O is detected for the first time in the southern position at a level of ~ 0.15 K and we here estimate an H2O abundance of (1-8) x 10-8. Odin is a Swedish-led satellite project funded jointly by the Swedish National Space Board (SNSB), the Canadian Space Agency (CSA), the National Technology Agency of Finland (Tekes), and the Centre National d'Etudes Spatiales (CNES, France). The Swedish Space Corporation (SSC) was the industrial prime contractor and is also responsible for the satellite operation.
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33. Highlights from the first year of Odin observations

Author: P. A. Feldman, René Liseau, Mathias Fredrixon, Edward J. Llewellyn, George F. Mitchell, L.-Å. Nyman, Hans Olofsson, Cathy Horellou, F. von Schéele, Gustaf Rydbeck, A. O. H. Olofsson, H. G. Floren, Tommy Wiklind, Michael Olberg, Christine D. Wilson, I. Ristorcelli, G. Persson, Roy Booth, Erkki Kyrölä, G. Olofsson, Edith Falgarone, Alain Lecacheux, John H. Black, G. Serra, Michael Lindqvist, Pierre Encrenaz, Nicolas Biver, T. Liljeström, Jorma Harju, Aa. Sandqvist, Sun Kwok, Georg Witt, Anders Winnberg, Rene Plume, Donal P. Murtagh, Magnus Dahlgren, Maryvonne Gerin, Tatsuhiko I. Hasegawa, Peter F. Bernath, L. E. B. Johansson, Urban Frisk, Kalevi Mattila, E. M. Gregersen, Per Bergman, M. Fich, Nicholas F. H Tothill, H. L. Nordh, Åke Hjalmarson, Bengt Larsson, Jacques Crovisier, Laurent Pagani, Steve Torchinsky, G. Mégie, Hans Rickman, V. Buat, Magne Hagström, Charles L. Curry, Kevin Volk, 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), Physique des plasmas, 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 Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Pôle Planétologie du LESIA, Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, 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)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, 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), 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), and Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Mission control center, Chemical models, Comet, Astronomy, Astronomy and Astrophysics, Astrophysics, 7. Clean energy, 01 natural sciences, [SDU]Sciences of the Universe [physics], 13. Climate action, Space and Planetary Science, 0103 physical sciences, Satellite, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], 010306 general physics, 010303 astronomy & astrophysics, Millimetre wave
Abstract: Key Odin operational and instrumental features and highlights from our sub-millimetre and millimetre wave observations of H2O, H218O, NH3, 15NH3 and O2 are presented, with some insights into accompanying Odin Letters in this AA H2O observations of Galactic Centre sources, of shock enhanced H2O towards the SNR IC443, and of the candidate infall source IRAS 16293-2422; H218O detections in Orion KL and in comet Ikeya-Zhang; sub-mm detections of NH3 in Orion KL (outflow, ambient cloud and bar) and ρ Oph, and very recently, of 15NH3 in~Orion KL. Simultaneous sensitive searches for the 119 GHz line of O2 have resulted in very low abundance limits, which are difficult to accomodate in chemical models. We also demonstrate, by means of a quantitative comparison of Orion KL H2O results, that the Odin and SWAS observational data sets are very consistently calibrated. Odin is a Swedish-led satellite project funded jointly by the Swedish National Space Board (SNSB), the Canadian Space Agency (CSA), the National Technology Agency of Finland (Tekes), and the Centre National d'etudes Spatiales (CNES, France). The Swedish Space Corporation (SSC) has been the prime industrial contractor, and is also responsible for the satellite operation from its Odin Mission Control Centre at SSC in Solna and its Odin Control Centre at ESRANGE near Kiruna in northern Sweden. See also the SNSB Odin web page: http://www.snsb.se/eng_odin_intro.shtml
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33 results on '"M. Fich"'

1. CHIMPS2: Survey description and $^{12}$CO emission in the Galactic Centre

2. SCOPE: SCUBA-2 Continuum Observations of Pre-protostellar Evolution – Survey Description and Compact Source Catalogue

3. CCAT-Prime: science with an ultra-widefield submillimeter observatory on Cerro Chajnantor

4. Prime-Cam: A first-light instrument for the CCAT-prime telescope

5. The JCMT Gould Belt Survey: A First Look at the Auriga-California Molecular Cloud with SCUBA-2

6. The JCMT Gould Belt Survey: A First Look at SCUBA-2 Observations of the Lupus I Molecular Cloud

7. The JCMT Gould Belt Survey: a first look at IC 5146

8. The JCMT Gould Belt Survey: first results from SCUBA-2 observations of the Cepheus Flare region

9. The JCMT Plane Survey: First complete data release - emission maps and compact source catalogue

10. THE JCMT GOULD BELT SURVEY: EVIDENCE FOR DUST GRAIN EVOLUTION IN PERSEUS STAR-FORMING CLUMPS

11. The JCMT Gould Belt Survey: a first look at Southern Orion A with SCUBA-2

12. The JCMT Gould Belt Survey: Evidence for radiative heating and contamination in the W40 complex

13. The JCMT Legacy Survey of the Gould Belt: mapping 13CO and C18O in Orion A

14. The JCMT Gould Belt Survey: SCUBA-2 observations of circumstellar discs in L 1495

15. Imaging the environment of a z= 6.3 submillimeter galaxy with SCUBA-2

16. THE JCMT GOULD BELT SURVEY: A FIRST LOOK AT DENSE CORES IN ORION B

17. The JCMT nearby galaxies legacy survey - VIII. CO data and the LCO(3-2)-LFIR correlation in the SINGS sample

18. Herschel/HIFI spectroscopy of the intermediate mass protostar NGC7129 FIRS 2 [Letter]

19. Water in massive star-forming regions: HIFI observations of W3 IRS5

20. Sensitive limits on the abundance of cold water vapor in the DM Tau protoplanetary disk

21. Water abundance variations around high-mass protostars: HIFI observations of the DR21 region

22. Herschel-PACS spectroscopy of the intermediate mass protostar NGC7129 FIRS 2

23. Water abundances in high-mass protostellar envelopes: Herschel observations with HIFI

24. Herschel observations of the hydroxyl radical (OH) in young stellar objects

25. Herschel/HIFI observations of high-J CO lines in the NGC 1333 low-mass star-forming region

26. Water in low-mass star-forming regions with Herschel . HIFI spectroscopy of NGC 1333

27. Variations in H2O+/H2O ratios toward massive star-forming regions

28. The Herschel-Heterodyne Instrument for the Far-Infrared (HIFI): instrument and pre-launch testing

29. Odin observations of H2O in the Galactic Centre

30. The hot core towards the intermediate-mass protostar NGC 7129 FIRS 2

31. The JCMT and Herschel Gould Belt Surveys: a comparison of SCUBA-2 and Herschel data of dense cores in the Taurus dark cloud L1495

32. Odin water mapping in the Orion KL region

33. Highlights from the first year of Odin observations

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