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10.7. Absorption columns with bright X-ray sources near the galactic center: — mass estimation in the Galactic center region

Published online by Cambridge University Press:  25 May 2016

Masaaki Sakano ,
Mamiko Nishiuchi ,
Yoshitomo Maeda ,
Katsuji Koyama  and
Jun Yokogawa
Masaaki Sakano
Affiliation:
Department of Physics, Kyoto University, Sakyo, Kyoto, Japan
Mamiko Nishiuchi
Affiliation:
Department of Physics, Kyoto University, Sakyo, Kyoto, Japan
Yoshitomo Maeda
Affiliation:
Department of Physics, Kyoto University, Sakyo, Kyoto, Japan
Katsuji Koyama
Affiliation:
Department of Physics, Kyoto University, Sakyo, Kyoto, Japan
Jun Yokogawa
Affiliation:
Department of Physics, Kyoto University, Sakyo, Kyoto, Japan

Abstract

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We report the column density distribution to the Galactic Center region using the X-ray binary observations with the X-ray satellite ASCA, and demonstrate a new method of the total mass determination near the Galactic Center. The column densities are given by a simple form as a function of the angular distance from the Galactic Plane. Assuming a disklike mass distribution of 500 pc radius, we estimate the total mass to be ~ 6 × 107M⊙.

Type
Part III. Black Holes and Central Activity
Information
Symposium - International Astronomical Union , Volume 184: The Central Regions of the Galaxy and Galaxies , 1998 , pp. 443 - 444
Copyright
Copyright © Kluwer 1998 

References

Bania, T. (1986), ApJ, 308, 868.Google Scholar
Blitz, L. et al. (1985), A&A, 143, 267.Google Scholar
Cox, P. & Laureijs, R. (1989), IAU symp. 136: The Center of the Galaxy, p.121.Google Scholar
David, P. et al. (1997), A&A, 322, 229.Google Scholar
Dotani, T. et al. (1996), IAU Circ, No.6337.Google Scholar
Maeda, Y. et al. (1996), PASJ, 48, 417.CrossRefGoogle Scholar
Oka, T. et al. (1997), ApJ, in press.Google Scholar
Sakano, M. et al. (1997), in preparation.Google Scholar