Stellar clusters formed within Giant Molecular Clouds are mass segregated. This is either because massive stars are born at the center of the clusters, or because they migrate to the center due to gravitational interactions. We analyze a run from the STARFORGE simulation suite to identify what role the above processes play in determining mass segregation. We find that clusters begin as inversely- or non-mass segregated but contain separate mass-segregated star formation sites. As the cluster evolves, these substructures merge, and the overall cluster becomes more mass segregated due to gravitational interactions.

中文翻译：

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STARFORGE模拟中恒星团簇中质量分离的起源

巨型分子云中形成的恒星簇被质量分离。这是因为大质量恒星诞生在星团的中心，或者是由于引力相互作用它们迁移到了中心。我们分析了STARFORGE仿真套件中的运行，以确定上述过程在确定质量偏析中的作用。我们发现星团开始时是反质量的或非质量的分离，但包含单独的质量分离的恒星形成部位。随着团簇的发展，这些子结构合并，并且由于重力相互作用，整个团簇变得更加质量隔离。