Journal Article

12.2-GHz methanol maser Methanol Multibeam follow-up catalogue – II. Longitude range 186°–330°

S. L. Breen, S. P. Ellingsen, J. L. Caswell, J. A. Green, M. A. Voronkov, G. A. Fuller, L. J. Quinn and A. Avison

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 426, issue 3, pages 2189-2207
Published in print November 2012 | ISSN: 0035-8711
Published online November 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2012.21759.x
12.2-GHz methanol maser Methanol Multibeam follow-up catalogue – II. Longitude range 186°–330°

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We present the second portion of a catalogue of 12.2-GHz methanol masers detected towards 6.7-GHz methanol masers observed in the unbiased Methanol Multibeam (MMB) survey. Using the Parkes radio telescope we have targeted all 207 6.7-GHz methanol masers in the longitude range 186°–330° for 12.2-GHz counterparts. We report the detection of 83 12.2-GHz methanol masers, and one additional source which we suspect is thermal emission, equating to a detection rate of 40 per cent. Of the 83 maser detections, 39 are reported here for the first time. We discuss source properties, including variability and highlight a number of unusual sources. We present a list of 45 candidates that are likely to harbour methanol masers in the 107.0-GHz transition.

Keywords: masers; stars: formation; ISM: molecules; radio lines: ISM

Journal Article.  9008 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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