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The infrared environment of methanol maser rings at high spatial resolution

Published online by Cambridge University Press:  24 July 2012

James M. De Buizer ,
Anna Bartkiewicz  and
Marian Szymczak
James M. De Buizer
Affiliation:
SOFIA-USRA, NASA Ames Research Center, Moffett Field, CA 94035, USA email: [email protected]
Anna Bartkiewicz
Affiliation:
Toruń Centre for Astronomy, Nicolas Copernicus University, Gagarina 11, 87-100, Toruń, Poland
Marian Szymczak
Affiliation:
Toruń Centre for Astronomy, Nicolas Copernicus University, Gagarina 11, 87-100, Toruń, Poland
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Abstract

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The recent discovery of methanol maser emission coming from ring-like distributions has led to the plausible hypothesis that they may be tracing circumstellar disks around forming high mass stars. In this article we discuss the distribution of circumstellar material around such young and massive accreting (proto)stars, and what infrared emission geometries would be expected for different disk/outflow orientations. For four targets we then compare the expected infrared geometries (as inferred from the properties of the maser rings) with actual high spatial resolution near-infrared and mid-infrared images. We find that the observed infrared emission geometries are not consistent with the masers residing in circumstellar disks.

Keywords

Masersstars: formationstars: early-typecircumstellar matterinfrared: ISMinstrumentation: high angular resolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S287: Cosmic Masers - from OH to H0 , January 2012 , pp. 151 - 155
Copyright
Copyright © International Astronomical Union 2012

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