The role of tidal forces in star cluster disruption

Details The role of tidal forces in star cluster disruption The role of tidal forces in star cluster disruption

2006-09-05

arxiv.org/abs/astro-ph/0609103v1

Astronomy and Astrophysics

Astrophysics

2 pages, To appear in "Mass loss from stars and the evolution of stellar clusters". Proc. of a workshop held in honour of H.J.

Scientific paper

Star clusters are subject to density irregularities in their host galaxy, such as giant molecular clouds (GMCs), the galactic disc and spiral arms, which are largely ignored in present day (N-body) simulations of cluster evolution. Time dependent external potentials give rise to tidal forces that accelerate stars leading to an expansion and more rapid dissolution of the cluster. I explain the basic principles of this tidal heating in the impulse approximation and show how related disruption time-scales depend on properties of the cluster.

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