SIMBAD references

2010MNRAS.405.2471V - Mon. Not. R. Astron. Soc., 405, 2471-2484 (2010/July-2)

New 9.9-GHz methanol masers.

VORONKOV M.A., CASWELL J.L., ELLINGSEN S.P. and SOBOLEV A.M.

Abstract (from CDS):

The Australia Telescope Compact Array has been used to make the first extensive search for the class I methanol masers at 9.9GHz. In total, 48 regions of high-mass star formation were observed. In addition to masers in W33-Met (G12.80-0.19) and G343.12-0.06 (IRAS 16547-4247) which have already been reported in the literature, two new 9.9-GHz masers have been found towards G331.13-0.24 and G19.61 -0.23. We have determined absolute positions (accurate to roughly a second of arc) for all the detected masers and suggest that some class I masers may be associated with shocks driven into molecular clouds by expanding HII regions. Our observations also imply that the evolutionary stage of a high-mass star-forming region when the class I masers are present can outlast the stage when the class II masers at 6.7-GHz are detectable, and overlaps significantly with the stage when OH masers are active.

Abstract Copyright: © 2010 CSIRO. Journal compilation © 2010 RAS

Journal keyword(s): masers - stars: formation - ISM: HII regions - ISM: molecules

Simbad objects: 43

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2020.11.29-05:59:07

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