Towards a Consistent Theory of Rotation and Mixing from the Pre-Main Sequence to the Horizontal Branch

走向从前主序列到水平分支的旋转和混合的一致理论

• 批准号: 9731621
• 负责人: Marc Pinsonneault
• 金额: $ 10.2万
• 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: 1998
• 资助国家: 美国
• 起止时间: 1998-05-15 至 2002-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9731621&HistoricalAwards=false
• 关键词: Towards; Consistent; Theory; Rotation; Mixing

Pinsonneault, Marc AST-9731621 Drs. Pinsonneault and Terndrup will study stellar rotation and mixing in low mass stars, by developing theoretical models that incorporate new input physics and model angular momentum transport and mixing, which are constrained by observed data on stellar abundances and rotation. They will begin with models appropriate to main-sequence stars, with application of mixing scenarios to the problem of light element (especially Lithium) abundances as a function of age, rotation, and composition. A key goal is to construct a physically self-consistent model which simultaneously explains both mixing and the evolution of angular momentum. Successful main-sequence models will then become the starting point for models of evolved red giant stars, which will test the theory with observations of abundance anomalies and horizontal branch rotation. ***

Pinsonneault，Marc AST-9731621 Pinsonneault和Terndrup将研究低质量恒星的恒星旋转和混合，通过开发理论模型，将新的输入物理和模型角动量传输和混合，这是由恒星丰度和旋转的观测数据约束。 他们将开始与模型适当的主序星，与应用程序的混合方案的问题，轻元素（特别是锂）的丰度作为一个功能的年龄，旋转，和组成。 一个关键的目标是建立一个物理上自洽的模型，同时解释混合和角动量的演变。 成功的主序星模型将成为红巨星演化模型的起点，这将通过观测丰度异常和水平分支旋转来检验理论。 ***