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Dynamical Friction in Disk Galaxies: The Radial Dependence
1996
International Astronomical Union Colloquium
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AbstractA 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.
doi:10.1017/s0252921100050053
fatcat:if42gnwpdfh53bqoun3owl554y