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Proper Motions of H2O Masers in W49(N) and the Distance to the Galactic Center

Published online by Cambridge University Press:  23 September 2016

C. R. Gwinn ,
J. M. Moran ,
M. J. Reid ,
M. H. Schneps ,
R. Genzel  and
D. Downes
C. R. Gwinn
Affiliation:
Harvard-Smithsonian Center for Astrophysics
J. M. Moran
Affiliation:
Harvard-Smithsonian Center for Astrophysics
M. J. Reid
Affiliation:
Harvard-Smithsonian Center for Astrophysics
M. H. Schneps
Affiliation:
Harvard-Smithsonian Center for Astrophysics
R. Genzel
Affiliation:
Max-Planck Institut für Extraterrestrische Physik
D. Downes
Affiliation:
Institut de Radio Astronomie Millimetrique

Extract

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A distance of R 0 = 7.6 ± 1.6 kpc for the galactic center is given by comparison of expansion parallax of a cluster of H2O masers in W49(N) with the kinematic distance of that source. Data from additional epochs, now being calibrated, should further improve the accuracy of our determination of R 0.

Information

Type
Perspectives
Information
Symposium - International Astronomical Union , Volume 136: The Galactic Center , 1989 , pp. 47 - 49
Copyright
Copyright © Kluwer 1989 

References

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