Postcollapse evolution of globular clusters dominated by tidal binary heating

Details Postcollapse evolution of globular clusters dominated by tidal binary heating Postcollapse evolution of globular clusters dominated by tidal binary heating

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...409..617l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 409, no. 2, p. 617-623.

Astronomy and Astrophysics

Astrophysics

8

Astronomical Models, Binary Stars, Collapse, Globular Clusters, Tides, Heating, Stellar Motions

Scientific paper

The asymptotic behavior of physical quantities in time during the postcollapse evolution of a stellar system is predicted using simple arguments. The postcollapse evolution is very sensitive to the initial velocity dispersion of the stellar system, since the tidal capture binary formation is essentially a two-body process like the dynamical relaxation which drives the core collapse. The critical density for the beginning of postcollapse expansion is found to be very sensitive to the choice of Coulomb logarithm. In this paper, postcollapse models with both long and short integration time steps for different cases of Coulomb logarithm are presented.

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