The Evolution of Angular Momentum in Low-Mass Stars

低质量恒星角动量的演化

• 批准号: 9528227
• 负责人: Donald Terndrup
• 金额: $ 6.8万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-08-01 至 1998-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9528227&HistoricalAwards=false
• 关键词: Evolution; Angular; Momentum; Low; Mass

95-28227 Terndrup, Donald Dr. Terndrup's project is a combination of both observation and theory to discern the relative importance of core/envelope interactions, disk/envelope locking and angular momentum loss through winds, which can be disentangled by observations which measure rotation over a large range of mass and age. The yield should be a large data base on rotation periods and rotation speeds for low mass stars in several clusters with ages 1-100 Myr. Measures of Li abundances will also be obtained, as a measure of the amount of mixing in the outer stellar envelopes and how that mixing depends on rotation. Theoretically, the project will continue and expand current efforts to include the effects of disks, winds, and magnetic fields in models of stellar evolution. ***

95-28227 Terndrup，Donald Terndrup博士的项目是观察和理论的结合，以辨别核心/包层相互作用，磁盘/包层锁定和角动量损失通过风的相对重要性，这可以通过测量大范围质量和年龄的旋转观测来解开。 产量应该是一个大的数据基础上的旋转周期和旋转速度的低质量恒星在几个集群的年龄1-100万年。 锂丰度的测量也将获得，作为衡量恒星外层包层中混合量以及混合如何取决于旋转的措施。 从理论上讲，该项目将继续并扩大目前的努力，将磁盘，风和磁场的影响纳入恒星演化模型。 ***