Star cluster disruption by giant molecular clouds

  title={Star cluster disruption by giant molecular clouds},
  author={Mark Gieles and Simon Portegies Zwart and Holger Baumgardt and E. Athanassoula and Henny J. G. L. M. Lamers and Michael Sipior and J. Leenaarts},
We investigate encounters between giant molecular clouds (GMCs) and star clusters. We propose a single expression for the energy gain of a cluster due to an encounter with a GMC, valid for all encounter distances and GMC properties. This relation is verified with N -body simulations of cluster-GMC encounters, where the GMC is represented by a moving analytical potential. Excellent agreement is found between the simulations and the analytical work for fractional energy gains of ∆E/|E0| < 10… CONTINUE READING