N-body simulations show high-z proto-star clusters with multiple populations can survive strong early tidal fields and evolve into systems with properties matching Galactic globular clusters after 12 Gyr.
Treatment of realistic tidal field in Monte Carlo simulations of star clusters
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abstract
We present a new implementation of the Monte Carlo method to simulate the evolution of star clusters. The major improvement with respect to the previously developed codes is the treatment of the external tidal field taking into account for both the loss of stars from the cluster boundary and the disk/bulge shocks. We provide recipes to handle with eccentric orbits in complex galactic potentials. The first calculations for stellar systems containing 21000 and 42000 equal-mass particles show good agreement with direct N-body simulations in terms of the evolution of both the enclosed mass and the Lagrangian radii provided that the mass-loss rate does not exceed a critical value.
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The evolution of high-z proto-star clusters into local globular clusters
N-body simulations show high-z proto-star clusters with multiple populations can survive strong early tidal fields and evolve into systems with properties matching Galactic globular clusters after 12 Gyr.