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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 R0 = 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 R0.

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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