Star Formation in Galaxies

星系中的恒星形成

• 批准号: 9008166
• 负责人: Joel Tohline
• 金额: $ 17.7万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-03-01 至 1994-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9008166&HistoricalAwards=false
• 关键词: Star; Formation; Galaxies

A major topic of study in astronomy concerns the way in which stars are formed from the gravitational collapse of interstellar gas clouds. The Principal Investigator (PI) wishes to extend earlier studies supported by the NSF of numerical simulations of proto- star under the mutual influence of gravity and rotation. The PI will use sophisticated new numerical techniques to compute models in two and three dimensions. Models will be computed to "follow" this collapse in time, with particular attention to the development of minor density fluctuations which could grow ultimately into planets or a secondary star. NSF support will include the purchase of a computer workstation so that movies of simulated collapses can be followed in "real time" over a wide range of test conditions. These results are expected to increase our understanding of how proto-stars lose angular momentum during their collapse and to define the conditions leading to the formation of two separate "binary" stars.

天文学研究的一个主要研究涉及恒星由星际气体云的重力崩溃形成的方式。 首席研究者（PI）希望扩展在重力和旋转相互影响下由原恒星数值模拟的NSF支持的早期研究。 PI将使用复杂的新数值技术在两个维度和三个维度上计算模型。 模型将被计算为“遵循”这种崩溃的时间，特别关注可能最终成长为行星或次要恒星的次要密度波动的发展。 NSF的支持将包括购买计算机工作站，以便在广泛的测试条件下，可以在“实时”中遵循模拟崩溃的电影。 预计这些结果将增加我们对原始巨星在崩溃过程中如何失去角动量的理解，并定义导致形成两个单独的“二进制”恒星的条件。