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The distance to an outer Galaxy star forming region

Published online by Cambridge University Press:  01 October 2007

K. Hachisuka ,
A. Brunthaler ,
M. J. Reid  and
K. M. Menten
K. Hachisuka
Affiliation:
Shanghai Astronomical Observatory, 80 Nandan Road, Shanghai, 200030, China email: khachi@shao.ac.cn Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, Bonn, Germany
A. Brunthaler
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, Bonn, Germany
M. J. Reid
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA, USA
K. M. Menten
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, Bonn, Germany
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Abstract

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We performed phase-referencing VLBI astrometric observations of the H2O maser source IRAS 02395+6244, located well beyond the solar circle. We measured its heliocentric distance to be 5.49 ± 0.80 kpc, implying a Galactocentric distance of 12.5 ± 0.5 kpc and a distance of 270 ± 40 pc above the Galactic plane.

Keywords

Galaxy: structuremasersastrometry
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S248: A Giant Step: from Milli- to Micro-arcsecond Astrometry , October 2007 , pp. 196 - 197
Copyright
Copyright © International Astronomical Union 2008

References

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