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Type:
Abstract
Title:
Effects of mass segregation in rotating clusters of galaxies
Authors:
Kashlinsky, A.
Affiliation:
AA(Virginia, University; National Radio Astronomy Observatory, Charlottesville)
Journal:
IN: Galaxy distances and deviations from universal expansion; Proceedings of the NATO Advanced Research Workshop, Kona, HI, Jan. 13-17, 1986 (A87-27726 11-90). Dordrecht, D. Reidel Publishing Co., 1986, p. 163-167.
Publication Date:
01/1986
Origin:
STI
Aabstract Copyright:
Bibliographic Code:
1986gddu.work..163K
Doc-summary/Abstract:
The dynamical friction force in rotating galactic clusters is calculated, and the changes in the cluster density profile, central mass, rotation curve, and measured M/L with time are evaluated. It is found that dynamical friction changes density profiles only marginally, and there is little prospect of determining the effects of mass segregation by measuring mean radii of galaxies of different magnitudes. A secondary peak in the density distribution appears due to the velocity anisotropy induced by rotation. Dynamical friction leads to an increase in the rotational velocity of the system, and the rotation curve becomes flatter with time. The M/L ratio changes very slowly with time, and dynamical friction cannot lead to appreciable changes in M/L of clusters unless the amount of mass accumulated at the cluster exceeds observational constraints.
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