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  • Braine, J.Laboratoire d'Astrophysique de Bordeaux (author)

Cool gas and dust in M33: Results from the HERschel M33 Extended Survey (HERM33ES)

  • Article/chapterEnglish2010

Publisher, publication year, extent ...

  • 2010-07-16
  • EDP Sciences,2010
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:9a7bc9a1-6c98-46cb-b235-795012e5ad83
  • https://doi.org/10.1051/0004-6361/201014551DOI
  • https://research.chalmers.se/publication/129988URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • 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 and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Gratier, P.Laboratoire d'Astrophysique de Bordeaux (author)
  • Kramer, C.Institut de Radioastronomie Millimétrique (IRAM) (author)
  • Xilouris, E. M.National Observatory of Athens (author)
  • Rosolowsky, E.University of British Columbia (UBC) (author)
  • Buchbender, C.Institut de Radioastronomie Millimétrique (IRAM) (author)
  • Boquien, M.University of Massachusetts (author)
  • Calzetti, D.University of Massachusetts (author)
  • Quintana-Lacaci, G.Institut de Radioastronomie Millimétrique (IRAM) (author)
  • Tabatabaei, F.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Verley, S.Universidad de Granada (author)
  • Israel, F. P.Universiteit Leiden (UL),Leiden University (UL) (author)
  • van der Tak, F. F. S.Netherlands Institute for Space Research (SRON) (author)
  • Aalto, Susanne,1964Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)saalto (author)
  • Combes, F.LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France (author)
  • Burillo, S. G.Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN) (author)
  • Gonzalez, M.Institut de Radioastronomie Millimétrique (IRAM) (author)
  • Henkel, C.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Koribalski, B.Commonwealth Scientific and Industrial Research Organisation (CSIRO) (author)
  • Mookerjea, B.Tata Institute of Fundamental Research (author)
  • Roellig, M.Universität zu Köln,University of Cologne (author)
  • Schuster, K.Institut de Radioastronomie Millimétrique (IRAM) (author)
  • Relano, M.University Of Cambridge (author)
  • Bertoldi, F. (author)
  • van der Werf, P.Universiteit Leiden (UL),Leiden University (UL) (author)
  • Wiedner, M. C.LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France (author)
  • Laboratoire d'Astrophysique de BordeauxInstitut de Radioastronomie Millimétrique (IRAM) (creator_code:org_t)

Related titles

  • In:Astronomy and Astrophysics: EDP Sciences518:Article Number: L690004-63611432-0746

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