On the dynamical evolution of a cluster of nonpoint gravitating bodies

Details On the dynamical evolution of a cluster of nonpoint gravitating bodies On the dynamical evolution of a cluster of nonpoint gravitating bodies

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pazh....6..648c&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 6, Sept.-Oct. 1980, p. 648-650.) Soviet Astronomy Letters, vol. 6, Sept.-Oct. 1980, p.

Astronomy and Astrophysics

Astronomy

1

Astronomical Models, Encounters, Galactic Clusters, Galactic Evolution, Nonpoint Sources, Star Clusters, Bodies Of Revolution, Ellipsoids, Globular Clusters, Gravitational Effects, Tides

Scientific paper

A criterion is obtained for the applicability of the mass-point model to analyses of encounters between nonpoint bodies. If a cluster is populous enough, its dynamical evolution may in fact be treated in terms of this simplified model. In some clusters of galaxies the time scale required for the nonpoint character of the galaxies to exert a substantial influence on the dynamics is comparable with their age.

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