A new method to create initially mass segregated star clusters in virial equilibrium

Details A new method to create initially mass segregated star clusters in virial equilibrium A new method to create initially mass segregated star clusters in virial equilibrium

2008-01-17

arxiv.org/abs/0801.2768v1

Astronomy and Astrophysics

Astrophysics

9 pages, 8 figures, accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2008.12993.x

Mass segregation stands as one of the most robust features of the dynamical evolution of self-gravitating star clusters. In this paper we formulate parametrised models of mass segregated star clusters in virial equilibrium. To this purpose we introduce mean inter-particle potentials for statistically described unsegregated systems and suggest a single-parameter generalisation of its form which gives a mass-segregated state. We describe an algorithm for construction of appropriate star cluster models. Their stability over several crossing-times is verified by following the evolution by means of direct N-body integration.

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