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Cool gas and dust i...
Cool gas and dust in M33: Results from the HERschel M33 Extended Survey (HERM33ES)
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- Braine, J. (author)
- Laboratoire d'Astrophysique de Bordeaux
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- Gratier, P. (author)
- Laboratoire d'Astrophysique de Bordeaux
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- Kramer, C. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
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- Xilouris, E. M. (author)
- National Observatory of Athens
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- Rosolowsky, E. (author)
- University of British Columbia (UBC)
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- Buchbender, C. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
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- Boquien, M. (author)
- University of Massachusetts
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- Calzetti, D. (author)
- University of Massachusetts
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- Quintana-Lacaci, G. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
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- Tabatabaei, F. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Verley, S. (author)
- Universidad de Granada
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- Israel, F. P. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- van der Tak, F. F. S. (author)
- Netherlands Institute for Space Research (SRON)
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- Aalto, Susanne, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Combes, F. (author)
- LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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- Burillo, S. G. (author)
- Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)
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- Gonzalez, M. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
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- Henkel, C. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Koribalski, B. (author)
- Commonwealth Scientific and Industrial Research Organisation (CSIRO)
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- Mookerjea, B. (author)
- Tata Institute of Fundamental Research
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- Roellig, M. (author)
- Universität zu Köln,University of Cologne
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- Schuster, K. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
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- Relano, M. (author)
- University Of Cambridge
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Bertoldi, F. (author)
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- van der Werf, P. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Wiedner, M. C. (author)
- LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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(creator_code:org_t)
- 2010-07-16
- 2010
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 518:Article Number: L69
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Abstract
Subject headings
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- We present an analysis of the first space-based far-IR-submm observations of M33, which measure the emission from the cool dust and resolve the giant molecular cloud complexes. With roughly half-solar abundances, M33 is a first step towards young low-metallicity galaxies where the submm may be able to provide an alternative to CO mapping to measure their H-2 content. In this Letter, we measure the dust emission cross-section sigma using SPIRE and recent CO and HI observations; a variation in s is present from a near-solar neighborhood cross-section to about half-solar with the maximum being south of the nucleus. Calculating the total H column density from the measured dust temperature and cross-section, and then subtracting the HI column, yields a morphology similar to that observed in CO. The H-2/HI mass ratio decreases from about unity to well below 10% and is about 15% averaged over the optical disk. The single most important observation to reduce the potentially large systematic errors is to complete the CO mapping of M33.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- galaxies
- galaxies: evolution
- graphite
- stars: formation
- ISM: clouds
- ISM
- galaxies: individual: M33
- Local Group
Publication and Content Type
- art (subject category)
- ref (subject category)
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To the university's database
- By the author/editor
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Braine, J.
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Gratier, P.
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Kramer, C.
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Xilouris, E. M.
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Rosolowsky, E.
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Buchbender, C.
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show more...
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Boquien, M.
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Calzetti, D.
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Quintana-Lacaci, ...
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Tabatabaei, F.
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Verley, S.
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Israel, F. P.
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van der Tak, F. ...
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Aalto, Susanne, ...
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Combes, F.
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Burillo, S. G.
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Gonzalez, M.
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Henkel, C.
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Koribalski, B.
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Mookerjea, B.
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Roellig, M.
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Schuster, K.
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Relano, M.
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Bertoldi, F.
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van der Werf, P.
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Wiedner, M. C.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
- Articles in the publication
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Astronomy and As ...
- By the university
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Chalmers University of Technology