DISCOVERY OF THE FIRST METHANOL (CH [subscript 3] OH) MASER IN THE ANDROMEDA GALAXY (M31)

Author(s)
Sjouwerman, Loránt O.; Murray, Claire E.; Pihlström, Ylva M.; Fish, Vincent L.; Araya, Esteban D.
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Abstract
We present the first detection of a 6.7 GHz Class II methanol (CH[subscript 3]OH) maser in the Andromeda galaxy (M31). The CH[subscript 3]OH maser was found in a VLA survey during the fall of 2009. We have confirmed the methanol maser with the new EVLA, in operation since 2010 March, but were unsuccessful in detecting a water maser at this location. A direct application for this methanol maser is the determination of the proper motion of M31, such as was previously obtained with water masers in M33 and IC10. Unraveling the three-dimensional velocity of M31 would solve for the biggest unknown in the modeling of the dynamics and evolution of the Local Group of galaxies.
Date issued
2010-11
URI
http://hdl.handle.net/1721.1/95680
Department
Haystack Observatory
Journal
Astrophysical Journal. Letters
Publisher
IOP Publishing
Citation
Sjouwerman, Loránt O., Claire E. Murray, Ylva M. Pihlström, Vincent L. Fish, and Esteban D. Araya. “ DISCOVERY OF THE FIRST METHANOL (CH [subscript 3] OH) MASER IN THE ANDROMEDA GALAXY (M31) .” The Astrophysical Journal 724, no. 2 (November 8, 2010): L158–L160. © 2010 The American Astronomical Society
Version: Final published version
ISSN
2041-8205
2041-8213
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