Skip navigation
  • INAF logo
  • Home
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects
  • Explore by
    • Research outputs
    • Researchers
    • Organization units
    • Projects
  • Login:
    • My DSpace
    • Receive email
      updates
    • Edit Account details
  • Italian
  • English

  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28922
Title: ATLASGAL - physical parameters of dust clumps associated with 6.7 GHz methanol masers
Authors: Billington, S. J.
Urquhart, J. S.
König, C.
Moore, T. J. T.
Eden, D. J.
Breen, S. L.
Kim, W. -J.
Thompson, M. A.
Ellingsen, S. P.
Menten, K. M.
Wyrowski, F.
Leurini, Silvia 
Issue Date: 2019
Journal: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 
Number: 490
Issue: 2
First Page: 2779
Abstract: We have constructed the largest sample of dust-associated class II 6.7 GHz methanol masers yet obtained. New measurements from the Methanol Multibeam (MMB) survey were combined with the 870 μ m APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) and the 850 μ m JCMT Plane Survey (JPS). Together with two previous studies we have now identified the host clumps for 958 methanol masers across the Galactic Plane, covering approximately 99 per cent of the MMB catalogue and increasing the known sample of dust-associated masers by over 30 per cent. We investigate correlations between the physical properties of the clumps and masers using distances and luminosities drawn from the literature. Clumps hosting methanol masers are significantly more compact and have higher volume densities than the general population of clumps. We determine a minimum volume density threshold of n(H<SUB>2</SUB>) ≥ 10<SUP>4</SUP> cm<SUP>-3</SUP> for the efficient formation of intermediate- and high-mass stars. We find 6.7 GHz methanol masers are associated with a distinct part of the evolutionary process (L<SUB>bol</SUB>/M<SUB>fwhm</SUB> ratios of between 10<SUP>0.6</SUP> and 10<SUP>2.2</SUP>) and have well-defined turning on and termination points. We estimate the lower limit for the mass of embedded objects to be ≥6 M<SUB>☉</SUB> and the statistical lifetime of the methanol maser stage to be ∼3.3 × 10<SUP>4</SUP> yr. This suggests that methanol masers are indeed reliable tracers of high-mass star formation, and indicates that the evolutionary period traced by this marker is relatively rapid.
URI: http://hdl.handle.net/20.500.12386/28922
URL: https://academic.oup.com/mnras/article/490/2/2779/5583008
ISSN: 0035-8711
DOI: 10.1093/mnras/stz2691
Bibcode ADS: 2019MNRAS.490.2779B
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

Files in This Item:
File Description SizeFormat 
stz2691.pdfpdf editoriale4.37 MBAdobe PDFView/Open
1907.00564.pdfpreprint1.68 MBAdobe PDFView/Open
Show full item record

Page view(s)

3
checked on Jan 16, 2021

Download(s)

1
checked on Jan 16, 2021

Google ScholarTM

Check

Altmetric


Items in DSpace are published in Open Access, unless otherwise indicated.


Explore by
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects

Informazioni e guide per autori

https://openaccess-info.inaf.it: tutte le informazioni sull'accesso aperto in INAF

Come si inserisce un prodotto: le guide a OA@INAF

La Policy INAF sull'accesso aperto

Documenti e modelli scaricabili

Feedback
Built with DSpace-CRIS - Extension maintained and optimized by Logo 4SCIENCE