SCYON Abstract

Received on February 22 2003

Parameters of Core-Collapse

AuthorsHolger Baumgardt(1), Douglas C. Heggie(2), Piet Hut(3), Jun Makino(1)
Affiliation(1) University of Tokyo,
(2) University of Edinburgh
(3) IAS, Princeton
Accepted byMonthly Notices of the Royal Astronomical Society
Contactholger@astron.s.u-tokyo.ac.jp
URLhttp://arXiv.org/abs/astro-ph/0301166
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Abstract

This paper considers the phenomenon of deep core collapse in collisional stellar systems, with stars of equal mass. The collapse takes place on some multiple, xi-1, of the central relaxation time, and produces a density profile in which rho ~ r-alpha, where alpha is a constant. The parameters alpha and xi have usually been determined from simplified models, such as gas and Fokker-Planck models, often with the simplification of isotropy. Here we determine the parameters directly from N-body simulations carried out using the newly completed GRAPE-6.