Early dynamical evolution of rotating star clusters in a tidal field

ABSTRACT In order to explore how the early internal rotational properties of star clusters are affected by external potential their host galaxies, we have run a suite N-body simulations following dynamical evolution and violent relaxation rotating embedded in tidal field. Our study focuses on models for which cluster’s rotation axis has generic orientation relative torque The interaction between process, angular momentum cluster, creates complex kinematic structure within most prominently radial variation position axis, along both polar azimuthal directions. We also examine velocity dispersion anisotropy show that projected may be directions cluster; combination projection effects kinematical features result measurement tangential inner regions. characterize structural our as function initial virial ratio find develop triaxial morphology minor not necessarily aligned with axis. Finally, long-term these features.