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The Influence of Velocity Dispersion on Dynamical Friction in Stellar Discs
Published online by Cambridge University Press: 25 May 2016
Abstract
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We have investigated the force of dynamical friction on a softened point mass orbiting inside a disc galaxy on a planar circular orbit both analytically and by means of numerical simulations. Including a velocity dispersion large enough to stabilise the disc markedly changes the physical picture of the mechanisms producing friction, whereas the numerical value of the friction is almost unaffected. Self-gravity of the disc enhances the friction only by a moderate amount.
- Type
- Chapter 6: How are we to Understand the Large Scale Structure of the ISM?
- Information
- Symposium - International Astronomical Union , Volume 169: Unsolved Problems of the Milky Way , 1996 , pp. 515 - 516
- Copyright
- Copyright © Kluwer 1996
References
Thomasson, M. (1991), PhD Thesis, Onsala Space Observatory, Chalmers University of Technology, Göteborg, Sweden.Google Scholar
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