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Exploring the Nature of MMB sources: A Search for Class I Methanol Masers and their Outflows

Published online by Cambridge University Press:  16 July 2018

Nichol Cunningham ,
Gary Fuller ,
Adam Avison  and
Shari Breen
Nichol Cunningham
Affiliation:
Green Bank Observatory, 155 Observatory Rd, P.O. Box 2, Green Bank, WV, 24944, USA email: ncunning@nrao.edu
Gary Fuller
Affiliation:
Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
Adam Avison
Affiliation:
Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
Shari Breen
Affiliation:
Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006, Australia
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Abstract

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We present the initial results from a class I 44-GHz methanol maser follow-up survey, observed with the MOPRA telescope, towards 272 sources from the Methanol Multi-beam survey (MMB). Over half (∼60%) of the 6.7 GHz class II MMB maser sources are associated with a class I 44-GHz methanol maser at a greater than 5σ detection level. We find that class II MMB masers sources with an associated class I methanol maser have stronger peak fluxes compared to regions without an associated class I maser. Furthermore, as part of the MOPRA follow-up observations we simultaneously observed SiO emission which is a known tracer of shocks and outflows in massive star forming regions. The presence of SiO emission, and potentially outflows, is found to be strongly associated with the detection of class I maser emission in these regions.

Keywords

masersstars: formation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S336: Astrophysical Masers: Unlocking the Mysteries of the Universe , September 2017 , pp. 317 - 318
Copyright
Copyright © International Astronomical Union 2018 

References

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