Star Formation and the Interstellar Medium

恒星形成和星际介质

• 批准号: 0098365
• 负责人: Christopher McKee
• 金额: $ 42.18万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-06-01 至 2007-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0098365&HistoricalAwards=false
• 关键词: Star; Formation; Interstellar; Medium

" Star Formation and the Interstellar Medium "AST- 0098365Star formation is of central importance in modern astrophysics. Stars, particularly massive stars, have a profound effect on their environment through both the winds they produce and the radiation they emit. The overall goal of the research covered by this award is to understand how stars form from the turbulent interstellar medium and how, in turn, energy injection from stars determines the properties of the interstellar medium out of which the stars form. A series of investigations is proposed, each of which is concerned with the problem of star formation both in our galaxy and in disk galaxies other than our own. In our own galaxy, special attention will be given to the process of low-mass star formation. Star formation in large clusters will also be investigated. Large clusters contain stars much more massive than the Sun and it is not at all clear how star formation can even proceed in the presence of the environmental disruption produced by just the first few stars. A third effort addressed during the present award will be an attempt to understand the distribution of gas among various phases. The relative proportions of molecular, cold atomic and warm atomic gas will be determined which will lead in turn to a self-consistent star formation rate within galaxies in general.

“星星的形成和星际介质“AST-0098365星星的形成在现代天体物理学中具有核心重要性。恒星，特别是大质量恒星，通过它们产生的风和它们发出的辐射对其环境产生深远的影响。该奖项所涵盖的研究的总体目标是了解恒星如何从湍流星际介质中形成，以及恒星的能量注入如何反过来决定恒星形成的星际介质的性质。提出了一系列的调查，其中每一个都是关心的问题，星星形成在我们的星系和其他盘星系比我们自己。在我们自己的星系中，将特别关注低质量星星的形成过程。还将研究大型星团中星星的形成。大型星团中包含的恒星质量比太阳大得多，在最初几颗恒星产生的环境破坏存在的情况下，星星的形成过程是如何进行的，我们一点也不清楚。在本奖项期间解决的第三个努力将是试图了解不同阶段之间的天然气分布。分子、冷原子和暖原子气体的相对比例将被确定，这将反过来导致星系内一般自洽的星星形成率。