论文标题
一项蒙特卡洛研究恒星簇的早期燃气和演变：带有MOCCA代码的新模拟
A Monte Carlo study of early gas expulsion and evolution of star clusters: new simulations with the MOCCA code in the AMUSE framework
论文作者
论文摘要
我们将最初嵌入气相的球状簇（GC）演化的新处方引入了蒙特卡洛法。借助嵌入在Amuse框架中的Monte Carlo Mocca代码的简化版本，我们研究了去除原始气体后GC的存活率。我们首先测试我们的代码，并表明我们的质量和拉格朗日半径演变的结果与N体模拟获得的结果非常吻合。蒙特卡洛代码比N体模拟更快地探索了恒星数量更大的系统的演变。我们已经进行了一项新的模拟调查，以探索一系列不同恒星形成效率和半质量半径的球状簇的演变。我们的研究显示了导致簇溶解的初始条件的范围以及簇可以在这个早期进化阶段生存的范围。
We introduce a new prescription for the evolution of globular clusters (GCs) during the initial embedded gas phase into a Monte Carlo method. With a simplified version of the Monte Carlo MOCCA code embedded in the AMUSE framework, we study the survival of GCs after the removal of primordial gas. We first test our code and show that our results for the evolution of mass and Lagrangian radii are in good agreement with those obtained with N-body simulations. The Monte Carlo code enables a more rapid exploration of the evolution of systems with a larger number of stars than N-body simulations. We have carried out a new survey of simulations to explore the evolution of globular clusters with up to $N = 500000$ stars for a range of different star formation efficiencies and half-mass radii. Our study shows the range of initial conditions leading to the clusters' dissolution and those for which the clusters can survive this early evolutionary phase.
