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Proper Motions and the Distance to a Water Vapor Maser in the Galaxy M33

Published online by Cambridge University Press:  12 April 2016

A. L. Argon ,
L. J. Greenhill ,
J. M. Moran ,
M. J. Reid  and
K. M. Menten
A. L. Argon
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, U.S.A.
L. J. Greenhill
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, U.S.A.
J. M. Moran
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, U.S.A.
M. J. Reid
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, U.S.A.
K. M. Menten
Affiliation:
Max-Planck-Institut für Radioastronomie, Bonn, Germany

Abstract

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The relative proper motions of water vapor maser features in the H ɪɪ region IC 133 have been used to determine a distance to the galaxy M33 that is independent of the usual calibrations associated with extragalactic distance estimates, e.g., extinction and metallicity.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 164: Radio Emission from Galactic and Extragalactic Compact Sources , 1998 , pp. 235 - 236
Copyright
Copyright © Astronomical Society of the Pacific 1998

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