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BIBTEX RIS

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

2010; IOP Publishing; Volume: 724; Issue: 2 Linguagem: Inglês

10.1088/2041-8205/724/2/l158

ISSN

2041-8213

Autores

Loránt O. Sjouwerman, Claire E. Murray, Y. M. Pihlström, Vincent L. Fish, E. D. Araya,

Tópico(s)

Astronomy and Astrophysical Research

Resumo

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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