Dynamics of star clusters and dense nuclei

Astronomy and Astrophysics – Astronomy

Scientific paper

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Methods: Numerical, Galaxies: Star Clusters, Methods: Numerical, Galaxies: Star Clusters

Scientific paper

The study of the dynamical evolution of thermally relaxing star clusters has made enormous progress during the last decades, starting from the pioneering works by Antonov and Lynden-Bell to the present-day complex modelling including astrophysical effects such as stellar evolution, tidal fields and gravitational shocking, and binaries. Nevertheless there remain a couple of unsolved questions for surprisingly simple systems, such as initially rotating star clusters consisting of equal point masses only. 'Thermally relaxing' here means that the two-body relaxation time scale is shorter than the lifetime of the system, as opposed to collisionless systems. An overview of our present understanding is given and recent studies in the field of rotating star clusters and those containing many primordial binaries are given in somewhat more detail.

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