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The circumstellar environment of methanol masers

Published online by Cambridge University Press:  03 August 2017

Chris Phillips ,
Douglas Bock ,
Huib Jan van Langevelde  and
Vincent Minier
Chris Phillips
Affiliation:
JIVE, Postbus 2, 7990 AA Dwingeloo, The Netherlands
Douglas Bock
Affiliation:
RAL, U. California at Berkeley, 601 Campbell Hall, Berkeley, CA 94720
Huib Jan van Langevelde
Affiliation:
JIVE, Postbus 2, 7990 AA Dwingeloo, The Netherlands
Vincent Minier
Affiliation:
Onsala Space Observatory, 439 92 Onsala, Sweden

Abstract

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We present VLBI and BIMA observations of the Class II methanol maser source G 59.783+0.065. The methanol emission arises from the centre of a compact molecular core, supporting the view that methanol masers trace an early stage of massive star formation. The velocity spread of the masers is significantly larger than that of the parent molecular cloud, which is consistent with the methanol coming from a rotating structure within the molecular core. However, there is also weak evidence that the methanol is aligned with an outflow.

Type
Part 1. Star Formation
Information
Symposium - International Astronomical Union , Volume 206: Cosmic Masers: From Protostars to Blackholes , 2002 , pp. 171 - 174
Copyright
Copyright © Astronomical Society of the Pacific 2002 

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