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New 9.9-GHz methanol masers
Citation
Voronkov, MA and Caswell, JL and Ellingsen, SP and Sobolev, AM, New 9.9-GHz methanol masers, Monthly Notices of the Royal Astronomical Society, 405, (4) pp. 2471-2484. ISSN 0035-8711 (2010) [Refereed Article]
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Copyright Statement
The definitive published version is available online at: http://interscience.wiley.com
Official URL: http://interscience.wiley.com
DOI: doi:10.1111/j.1365-2966.2010.16624.x
Abstract
The Australia Telescope Compact Array has been used to make the first extensive search
for the class I methanol masers at 9.9 GHz. 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 starforming
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.
Item Details
Item Type: | Refereed Article |
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Keywords: | masers – stars: formation – ISM: HII regions – ISM: molecules. |
Research Division: | Physical Sciences |
Research Group: | Astronomical sciences |
Research Field: | Galactic astronomy |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the physical sciences |
UTAS Author: | Ellingsen, SP (Professor Simon Ellingsen) |
ID Code: | 65440 |
Year Published: | 2010 |
Web of Science® Times Cited: | 54 |
Deposited By: | Physics |
Deposited On: | 2010-11-16 |
Last Modified: | 2011-03-23 |
Downloads: | 0 |
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