论文标题
环境对湍流分子云中恒星簇的动态演变的影响
Environmental Effects on the Dynamical Evolution of Star Clusters in Turbulent Molecular Clouds
论文作者
论文摘要
上下文：巨大分子云中形成的恒星簇形成，这些云通过大型恒星的反馈作用强烈改变，但是簇仍然嵌入在密集的，高度湍流的培养基中，并且与环境结构的相互作用可能会从预期的情况下改变其动力学进化。 目的：我们旨在研究群集的动力学演变之间的耦合机制，这是由质量隔离过程加速的，以及由气态环境引起的骚扰效应。 方法：我们模拟了群集动力学演化，结合了天文多种软件环境（AMUSE）中的$ n $ body和流体动力代码。 结论：潮汐骚扰比孤立的参考模拟更快地产生稀疏构型。在两种情况下，渐近幂律密度分布指数的演变也显示出显着不同的行为。在动态发展的高级阶段，背景更有效。
Context: Star clusters form within giant molecular clouds that are strongly altered by the feedback action of the massive stars, but the cluster still remains embedded in a dense, highly turbulent medium and interactions with ambient structures may modify its dynamical evolution from that expected if it were isolated. Aims: We aim to study coupling mechanisms between the dynamical evolution of the cluster, accelerated by the mass segregation process, with harassment effects caused by the gaseous environment. Methods: We simulated the cluster dynamical evolution combining $N$-body and hydrodynamic codes within the Astronomical Multipurpose Software Environment (AMUSE). Conclusions: Tidal harassment produces a sparser configuration more rapidly than the isolated reference simulations. The evolution of the asymptotic power-law density distribution exponent also shows substantially different behaviour in the two cases. The background is more effective on clusters in advanced stages of dynamical development.
