Journal Article

12.2-GHz methanol maser MMB follow-up catalogue – I. Longitude range 330° to 10°

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 421, issue 2, pages 1703-1735
Published in print April 2012 | ISSN: 0035-8711
Published online March 2012 | e-ISSN: 1365-2966 | DOI:
12.2-GHz methanol maser MMB follow-up catalogue – I. Longitude range 330° to 10°

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We present a catalogue of 12.2-GHz methanol masers detected towards 6.7-GHz methanol masers observed in the unbiased Methanol Multibeam (MMB) survey in the longitude range 330° (through 360°) to 10°. This is the first portion of the catalogue which, when complete, will encompass all of the MMB detections. We report the detection of 185 12.2-GHz sources towards 400 6.7-GHz methanol maser targets, equating to a detection rate of 46 per cent. Of the 185 12.2-GHz detections, 118 are reported here for the first time. We draw attention to a number of ‘special’ sources, particularly those with emission at 12.2-GHz stronger than their 6.7-GHz counterpart, and conclude that these unusual sources are not associated with a specific evolutionary stage.

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

Journal Article.  12677 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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