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The Velocity Dispersion in the Cold Collapse

Published online by Cambridge University Press:  25 May 2016

Y. Kan-ya ,
M. Sasaki ,
T. Tsuchiya  and
N. Gouda
Y. Kan-ya
Affiliation:
Department of Physics, Kyoto University Kyoto 606-01, Japan
M. Sasaki
Affiliation:
Department of Physics, Kyoto University Kyoto 606-01, Japan
T. Tsuchiya
Affiliation:
Division of Theoretical Astrophysics, National Astronomical Observatory Mitaka, Tokyo, 181, Japan
N. Gouda
Affiliation:
Department of Earth and Space Science, Osaka University 1-1, Machikaneyama-cho, Toyonaka, Osaka 560, Japan

Abstract

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We investigate the growth of the velocity dispersion in the initial stage of the cold dissipationless collapse of spherical collisionless systems by a perturbation theory. We show that the tangential velocity dispersion grows faster than the radial one for the system with centrally condensed initial density profile.

Type
Chapter 5: How Did the Milky Way Form?
Information
Symposium - International Astronomical Union , Volume 169: Unsolved Problems of the Milky Way , 1996 , pp. 423 - 424
Copyright
Copyright © Kluwer 1996 

References

Aguilar, L.A., Merritt, D.R. (1990) ApJ. , 265, 33 CrossRefGoogle Scholar
Kan-ya, Y., Sasaki, M., Tsuchiya, T., Gouda, N. (1994) submitted. Google Scholar
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