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Continuum Emission Associated with 6.7-GHz Methanol Masers

journal contribution
posted on 2023-05-16, 07:36 authored by Simon EllingsenSimon Ellingsen, Norris, RP, Peter McCullochPeter McCulloch
We have used the Australia Telescope Compact Array (ATCA) to search for continuum emission toward three strong 6.7-GHz methanol maser sources. For two of the sources, G 339.88 - 1.26 and NGC 6334F (G 351.42 + 0.64), we detect continuum emission closely associated with the methanol masers. A further three clusters of masers show no radio continuum emission above our sensitivity limit of 1-5 mJy. We find the position of the 6.7-GHz methanol masers in G 339.88 - 1.26 to be consistent with the hypothesis that the masers lie in the circumstellar disc surrounding a massive star. We also argue that one of the clusters of methanol masers in NGC 6334F provides indirect observational support for the circumstellar disc hypothesis.

History

Publication title

Royal Astronomical Society. Monthly Notices

Volume

279

Pagination

101-107

ISSN

0035-8711

Department/School

School of Natural Sciences

Publisher

Blackwell Publishing Ltd

Place of publication

London

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the physical sciences

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