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Methanol Maser Parallaxes and Proper Motions

Published online by Cambridge University Press:  24 July 2012

Y. Xu ,
M. J. Reid ,
L. Moscadelli ,
K. M. Menten ,
X. W. Zheng ,
A. Brunthaler ,
B. Zhang ,
K. L. J. Rygl ,
J. J. Li  and
A. Sanna
Y. Xu
Affiliation:
Purple Mountain Observatory, China email: xuye@pmo.ac.cn
M. J. Reid
Affiliation:
Harvard-Smithsonian Center for Astrophysics, USA
L. Moscadelli
Affiliation:
Arcetri Obs., Italy
K. M. Menten
Affiliation:
Max-Planck-Institute für Radioastronomie, Germany
X. W. Zheng
Affiliation:
Nanjing University, China
A. Brunthaler
Affiliation:
Max-Planck-Institute für Radioastronomie, Germany
B. Zhang
Affiliation:
Max-Planck-Institute für Radioastronomie, Germany
K. L. J. Rygl
Affiliation:
INAF-IAPS, Italy
J. J. Li
Affiliation:
Purple Mountain Observatory, China email: xuye@pmo.ac.cn
A. Sanna
Affiliation:
Max-Planck-Institute für Radioastronomie, Germany
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Abstract

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Due to their compactness, persistence and slow motion, Class II CH3OH masers are excellent targets for parallax and proper motion measurements for massive star-forming regions in the Galactic Disk. These measurements can be used to improve our understanding of the spiral structure and dynamics of the Milky Way. At the same time, Class II CH3OH masers can also be used to study gas kinematics close to the exciting star, tracing rotation, infall and/or outflow motions.

Keywords

CH3OH maserparallaxes and proper motionsGalactic structure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S287: Cosmic Masers - from OH to H0 , January 2012 , pp. 368 - 376
Copyright
Copyright © International Astronomical Union 2012

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