DISCOVERY OF THE FIRST METHANOL (CH [subscript 3] OH) MASER IN THE ANDROMEDA GALAXY (M31)
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Sjouwerman-2010-DISCOVERY OF THE FIR.pdf
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Author(s)
Sjouwerman, Loránt O.
Murray, Claire E.
Pihlström, Ylva M.
Fish, Vincent L.
Araya, Esteban D.
Date Issued
November 2010
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
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.
MIT Department
Haystack Observatory
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DOI of Published Version
https://doi.org/10.1088/2041-8205/724/2/l158
