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Environmental Effects on Galaxies in Clusters

Published online by Cambridge University Press:  04 August 2017

R. H. Miller  and
B. F. Smith
R. H. Miller
Affiliation:
European Southern Observatory
B. F. Smith
Affiliation:
NASA Ames Research Center

Extract

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This study is part of a program to investigate consequences to a galaxy of its orbiting within a cluster of galaxies. Numerical experiments have been conducted to study the tidal influences on the internal dynamics of a galaxy (Miller and Smith 1982). The present first cut at the general problem treats effects of the cluster's tidal potential on the pattern motion and observable properties of a galaxy (shape, density contours, velocity fields, velocity dispersions) for a fixed external potential. The first-order cluster force field is balanced by the galaxy's acceleration in the real cluster, leaving tidal terms as the leading terms in a Taylor series expansion of the cluster force field about the center of the galaxy. The cluster tidal force field is usually stretching along a line toward the cluster center and compressive at right angles.

Type
VI. Mergers
Information
Symposium - International Astronomical Union , Volume 100: Internal Kinematics and Dynamics of Galaxies , 1983 , pp. 351 - 352
Copyright
Copyright © Reidel 1983 

References

Adams, M.T., Strom, K.M., and Strom, S.E. 1980, Astrophys. J. 238, 445.Google Scholar
Gott, J.R. and Turner, E.L. 1977, Astrophys. J. 213, 309.CrossRefGoogle Scholar
Miller, R.H., and Smith, B.F. 1982, Astrophys. J. 253, 58.Google Scholar