The molecular environment of massive star forming cores associated with Class II methanol maser emission

S. N. Longmore, M. G. Burton, P. J. Barnes, T. Wong, C. R. Purcell, J. Ott

Research output: Contribution to journalArticlepeer-review

Abstract

Methanol maser emission has proven to be an excellent signpost of regions undergoing massive star formation (MSF). To investigate their role as an evolutionary tracer, we have recently completed a large observing program with the ATCA to derive the dynamical and physical properties of molecular/ionised gas towards a sample of MSF regions traced by 6.7GHz methanol maser emission. We find that the molecular gas in many of these regions breaks up into multiple sub-clumps which we separate into groups based on their association with/without methanol maser and cm continuum emission. The temperature and dynamic state of the molecular gas is markedly different between the groups. Based on these differences, we attempt to assess the evolutionary state of the cores in the groups and thus investigate the role of class II methanol masers as a tracer of MSF.

Original languageEnglish (US)
Pages (from-to)125-129
Number of pages5
JournalProceedings of the International Astronomical Union
Volume3
Issue numberS242
DOIs
StatePublished - Mar 2007

Keywords

  • ISM: evolution
  • ISM: molecules
  • Line: profiles
  • Masers
  • Molecular data
  • Radio continuum: stars
  • Stars: early-type
  • Stars: formation

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

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