Continuum emission associated with 6.7-GHz methanol masers

Details Continuum emission associated with 6.7-GHz methanol masers Continuum emission associated with 6.7-GHz methanol masers

1995-09-13

arxiv.org/abs/astro-ph/9509068v1

Astronomy and Astrophysics

Astrophysics

8 pages including 2 figures, using LaTeX formatted with mn.sty, accepted for publication in MNRAS

Scientific paper

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, G339.88-1.26 and NGC 6334F (G351.42+0.64), we detect continuum emission closely associated with the methanol masers. A further three clusters of masers showed no radio continuum emission above our sensitivity limit of 1-5 mJy. We find the position of the 6.7-GHz methanol masers in G339.88-1.26 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.

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