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

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

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 unsucc...

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Bibliographic Details
Main Authors: Sjouwerman, Loránt O. (Author), Murray, Claire E. (Author), Pihlström, Ylva M. (Author), Fish, Vincent L. (Contributor), Araya, Esteban D. (Author)
Other Authors: Haystack Observatory (Contributor)
Format: Article
Language:English
Published: IOP Publishing, 2015-02-26T19:45:11Z.
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Summary: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.
National Radio Astronomy Observatory (U.S.)

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