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Dynamical evolution of young embedded stellar clusters: Environmental effects on the formation of planetary systems.

机译:年轻的嵌入式恒星团的动态演化:对行星系统形成的环境影响。

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摘要

The dynamical evolution of young stellar clusters is studied to determine the effect cluster environment has on planetary formation in the disks surrounding cluster members. Recent infrared observations of nearby star-forming regions motivate and inform our model clusters. Multiple simulations of equivalent initial conditions produce a robust statistical description of the clusters, e.g., the distribution of close encounters, the cluster mass profile, the distribution of the radial location of cluster members, and the velocity structure of the evolving cluster. These results provide a framework from which to assess the effects of clusters on the planet formation and to study cluster evolution. The results give further insight into major questions of cluster evolution including mass segregation and cluster relaxation, which depend on the gas structure and removal processes. The interaction rates and radiation fields within simulated clusters are used to determine the extent to which planet formation is compromised by the clustered environment. These simulations are also used to model the formation and evolution of observed clusters and to understand the dynamics of moderately evolved embedded clusters.
机译:研究了年轻恒星星团的动力学演化,以确定星团环境对星团成员周围盘中行星形成的影响。最近对附近恒星形成区域的红外观测激发并通知了我们的模型群。等效初始条件的多次模拟产生了对星团的可靠统计描述,例如近距离接触的分布,星团质量分布,星团成员径向位置的分布以及正在演化的星团的速度结构。这些结果提供了一个评估星团对行星形成的影响以及研究星团演化的框架。结果进一步洞悉了团簇演化的主要问题,包括质量偏析和团簇弛豫,这取决于气体结构和去除过程。模拟星团中的相互作用速率和辐射场用于确定星团环境对行星形成的危害程度。这些模拟还用于对观察到的星团的形成和演化建模,并了解中等程度演化的嵌入式星团的动力学。

著录项

  • 作者

    Proszkow, Eva-Marie.;

  • 作者单位

    University of Michigan.;

  • 授予单位 University of Michigan.;
  • 学科 Physics Astronomy and Astrophysics.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 200 p.
  • 总页数 200
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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