Theory of Massive Star Formation

大质量恒星形成理论

• 批准号: 55395601
• 负责人: Professor Dr. Robi Stefan Banerjee
• 金额: --
• 依托单位: Hamburger Sternwarte
• 依托单位国家: 德国
• 项目类别: Independent Junior Research Groups
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/55395601?language=en
• 关键词: Theory; Massive; Star; Formation

Massive stars are the brightest stars in our Universe. They can be observed copiously in our own Milky Way and beyond it in other galaxies. Despite the substantial amount of observational data, our theoretical knowledge of how such massive stars form is far from being complete. Difficulties in understanding the formation of massive stars arise from the complexity of this problem. For instance, massive stars form preferentially in clusters where the neighbouring stars influence each other by outflows and strong radiation feedback. The aim of this proposal is to develop a comprehensive model of massive star formation which will integrate all the different processes of this issue.So far, our understanding of massive star formations comes from separate, only loosely connected, research directions. For the proposed projects we are going to combine these different areas. In particular we will include feedback from radiation, winds and jets produced by the newly formed massive star. As we will self-consistently trace star formation within a large fraction of the parent molecular cloud our results will also include the effect from interactions between the newly formed stars in the cluster. We will also keep track of the chemical evolution within the star-forming region which we will use to validate our models with observational data.

大质量恒星是我们宇宙中最亮的恒星。它们在我们的银河系和其他星系中都能被大量观测到。尽管有大量的观测数据，但我们对这种大质量恒星如何形成的理论知识还远未完成。理解大质量恒星形成的困难来自于这个问题的复杂性。例如，大质量恒星优先形成在星团中，相邻恒星通过外流和强烈的辐射反馈相互影响。这个计划的目的是发展一个大质量星星形成的综合模型，它将整合这个问题的所有不同过程。到目前为止，我们对大质量星星形成的理解来自不同的研究方向，只有松散的联系。对于建议的项目，我们将联合收割机结合这些不同的领域。特别是，我们将包括来自新形成的大质量星星产生的辐射、风和喷流的反馈。由于我们将自洽地追踪大部分母体分子云内的星星形成，我们的结果也将包括星团中新形成恒星之间相互作用的影响。我们还将跟踪恒星形成区域内的化学演化，我们将用观测数据来验证我们的模型。