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The distance to an outer Galaxy star forming region

Published online by Cambridge University Press:  01 October 2007

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.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2008

References

Brand, J. & Blitz, L., 1993, A&A, 275, 67Google Scholar
Hachisuka, K., Brunthaler, A., Menten, K. M., Reid, M. J. et al. , 2006, ApJ, 645, 337CrossRefGoogle Scholar
Nakanishi, H. & Sofue, Y., 2003, PASJ, 55, 191CrossRefGoogle Scholar
Reid, M. J., 1993, ARAA, 31, 345CrossRefGoogle Scholar
Wouterloot, J. G. A., Brand, J., & Fiegle, K., 1993, A&AS, 98, 589Google Scholar
Xu, Y., Reid, M. J., Zheng, X. W., & Menten, K. M., 2006, Science, 311, 54CrossRefGoogle Scholar
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