A Monte Carlo study of early gas expulsion and evolution of star clusters: new simulations with the MOCCA code in the <scp>amuse</scp> framework

ABSTRACT We introduce a new prescription for the evolution of globular clusters (GCs) during initial embedded gas phase into Monte Carlo method. With simplified version MOCCA code in amuse framework, we study survival GCs after removal primordial gas. first test our and show that results mass Lagrangian radii are good agreement with those obtained N-body simulations. The enables more rapid exploration systems larger number stars than have carried out survey simulations to explore up N = 500 000 range different star formation efficiencies half-mass radii. Our shows conditions leading clusters’ dissolution which can survive this early evolutionary phase.