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.

大质量恒星是宇宙中最亮的恒星。它们可以在我们的银河系以及银河系以外的其他星系中大量观察到。尽管有大量的观测数据，但我们对如此大质量恒星如何形成的理论知识还远未完成。这个问题的复杂性导致了理解大质量恒星形成的困难。例如，大质量恒星优先在星团中形成，其中相邻恒星通过流出和强辐射反馈相互影响。该提案的目的是开发一个大质量恒星形成的综合模型，该模型将整合该问题的所有不同过程。到目前为止，我们对大质量恒星形成的理解来自于独立的、只有松散联系的研究方向。对于拟议的项目，我们将结合这些不同的领域。特别是，我们将包括新形成的大质量恒星产生的辐射、风和喷流的反馈。由于我们将自洽地追踪母体分子云的大部分内的恒星形成，我们的结果还将包括星团中新形成的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，并用观测数据来验证我们的模型。