Star Formation in Galaxies

星系中的恒星形成

• 批准号: 8701503
• 负责人: Joel Tohline
• 金额: $ 17万
• 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: 1987
• 资助国家: 美国
• 起止时间: 1987-07-01 至 1991-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8701503&HistoricalAwards=false
• 关键词: Star; Formation; Galaxies

Tohline will investigate the collapse of gas clouds to form stars, using a supercomputer and extensive imaging of the computed gas clouds. He will start the computed collapse either from a series of newly discovered mathematical solutions for rotating clouds or from a set of solutions for massive accretion disks. He will trace the development of instabilities, especially those that cause fission into smaller pieces. Stars are known to form by the collapse of small, dense interstellar clouds. Rotation of the clouds is known to be important, in part because most stars occur in binary pairs. But the actual collapse of rotating clouds has not been traced. Will the cloud split into pieces? How fast will the resulting stars rotate? Tohline will use a supercomputer to investigate these questions and will use images of the computed clouds to determine which solutions most resemble those in nature.

Tohline 将使用超级计算机和计算气体云的广泛成像来研究气体云塌缩形成恒星的过程。 他将从一系列新发现的旋转云的数学解决方案或从一组大规模吸积盘的解决方案开始计算坍缩。 他将追踪不稳定因素的发展，特别是那些导致裂变成更小碎片的不稳定因素。 众所周知，恒星是由小而致密的星际云塌陷形成的。 众所周知，云的旋转很重要，部分原因是大多数恒星都是成双成对出现的。 但旋转云的实际崩溃尚未被追踪到。 云会分裂成碎片吗？ 由此产生的恒星旋转速度有多快？ Tohline 将使用超级计算机来研究这些问题，并使用计算云的图像来确定哪些解决方案最类似于自然界的解决方案。