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  • Urquhart, J. S.University Of Kent (author)

SEDIGISM-ATLASGAL: Dense gas fraction and star formation efficiency across the Galactic disc

  • Article/chapterEnglish2021

Publisher, publication year, extent ...

  • 2020-09-11
  • Oxford University Press (OUP),2021

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:9f679c15-5e41-4700-bb2c-e79e518acb0c
  • https://doi.org/10.1093/mnras/staa2512DOI
  • https://research.chalmers.se/publication/521746URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

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

Notes

  • By combining two surveys covering a large fraction of the molecular material in the Galactic disc, we investigate the role spiral arms play in the star formation process. We have matched clumps identified by APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) with their parental giant molecular clouds (GMCs) as identified by SEDIGISM, and use these GMC masses, the bolometric luminosities, and integrated clump masses obtained in a concurrent paper to estimate the dense gas fractions (DGFgmc = ΣMclump/Mgmc) and the instantaneous star formation efficiencies (i.e. SFEgmc = ΣLclump/Mgmc). We find that the molecular material associated with ATLASGAL clumps is concentrated in the spiral arms (∼60 per cent found within ±10 km s-1 of an arm).We have searched for variations in the values of these physical parameters with respect to their proximity to the spiral arms, but find no evidence for any enhancement that might be attributable to the spiral arms. The combined results from a number of similar studies based on different surveys indicate that, while spiral-arm location plays a role in cloud formation and HI to H2 conversion, the subsequent star formation processes appear to depend more on local environment effects. This leads us to conclude that the enhanced star formation activity seen towards the spiral arms is the result of source crowding rather than the consequence of any physical process.

Subject headings and genre

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

  • Figura, C.Wartburg College (author)
  • Cross, J. R.University Of Kent (author)
  • Wells, M.University Of Kent (author)
  • Moore, T. J.T.Liverpool John Moores University (author)
  • Eden, D. J.Liverpool John Moores University (author)
  • Ragan, S. E.Cardiff University (author)
  • Pettitt, A. R.Hokkaido University (author)
  • Duarte-Cabral, A.Cardiff University (author)
  • Colombo, D.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Schuller, F.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Leibniz-Institut Für Astrophysik Potsdam,Leibniz Institute for Astrophysics Potsdam (author)
  • Csengeri, T.Université de Bordeaux,University of Bordeaux (author)
  • Mattern, M.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Université Paris-Saclay,University Paris-Saclay (author)
  • Beuther, H.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Menten, K. M.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Wyrowski, F.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Anderson, L. D.West Virginia University (author)
  • Barnes, P. J.Space Science Institute (author)
  • Beltrán, M.Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory (author)
  • Billington, S. J.University Of Kent (author)
  • Bronfman, LeonardoUniversidad de Chile (UCH),University of Chile (UCH) (author)
  • Giannetti, A.Istituto di Radioastronomia (author)
  • Kainulainen, Jouni,1979Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jounik (author)
  • Kauffmann, J.Massachusetts Institute of Technology (MIT) (author)
  • Lee, M. Y.Korea Astronomy and Space Science Institute (author)
  • Leurini, S.Istituto nazionale di astrofisica (INAF) (author)
  • Medina, S. N.X.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Montenegro-Montes, F.M.European Southern Observatory Santiago (author)
  • Riener, ManuelMax Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Rigby, AndrewCardiff University (author)
  • Sanchez-Monge, A.Universität zu Köln,University of Cologne (author)
  • Schilke, P.Universität zu Köln,University of Cologne (author)
  • Schisano, E.Istituto nazionale di astrofisica (INAF) (author)
  • Traficante, A.Istituto nazionale di astrofisica (INAF) (author)
  • Wienen, M.University of Exeter (author)
  • University Of KentWartburg College (creator_code:org_t)

Related titles

  • In:Monthly Notices of the Royal Astronomical Society: Oxford University Press (OUP)500:3, s. 3050-30630035-87111365-2966

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