论文标题
恒星簇的动力演化，具有最高的IMF
Dynamical evolution of star clusters with top-heavy IMF
论文作者
论文摘要
几项观察性和理论研究表明，球状簇（GC）中巨大恒星的初始质量功能（IMF）斜率取决于初始云密度和金属性，因此IMF随着金属性的降低并增加了形成对象的气体密度，IMF变得越来越高。使用从顶级IMF开始的GC的N体模拟，并在类似银河系的潜力内进行早期气体驱动，我们展示了这种集群将如何发展。通过改变最高度的程度，我们计算了簇的溶解时间和簇质量的最小簇质量在进化12 Gyr后生存。
Several observational and theoretical studies suggest that the initial mass function (IMF) slope for massive stars in globular clusters (GCs) depends on the initial cloud density and metallicity, such that the IMF becomes increasingly top-heavy with decreasing metallicity and increasing the gas density of the forming object. Using N-body simulations of GCs starting with a top-heavy IMF and undergo early gas expulsion within a Milky Way-like potential, we show how such a cluster would evolve. By varying the degree of top-heaviness, we calculate the dissolution time and the minimum cluster mass needed for the cluster to survive after 12 Gyr of evolution.
