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Dynamical Friction in Disk Galaxies: The Radial Dependence
release_rev_6ee4d9de-0e2f-4f82-bc79-8e477c4b97b6
by
Mattias Wahde,
Karl Johan Donner
Published
in International Astronomical Union Colloquium
by Cambridge University Press (CUP).
1996 Volume 157, p372-374
Abstract
<jats:title>Abstract</jats:title>A simple formula is derived for the force of dynamical friction acting on a satellite galaxy which is moving on a nearly circular orbit around its parent galaxy. Using this formula, estimates of the decay time are computed. The results are then compared with the corresponding results from numerical simulations, and are found to be in good agreement.
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