Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 724, Issue 2, Pages L158-L160Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/724/2/L158
Keywords
galaxies: individual (M31); galaxies: ISM; Local Group; masers
Categories
Funding
- National Science Foundation
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We present the first detection of a 6.7 GHz Class II methanol (CH3OH) maser in the Andromeda galaxy (M31). The CH3OH 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.
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