Putting Pre-Main-Sequence Stellar Evolution Theory to the Test: Interiors and Angular Momentum

将前主序恒星演化理论付诸实践：内部结构和角动量

• 批准号: 0098417
• 负责人: Robert Mathieu
• 金额: $ 27万
• 依托单位: University of Wisconsin-Madison
• 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: 2001-07-01 至 2005-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0098417&HistoricalAwards=false
• 关键词: Putting; Pre; Main; Sequence; Stellar

Mathieu, Robert "Putting Pre-Main-Sequence Stellar Evolution to the Test: Interiors and Angular Momentum"AST-0098417During the course of this award the physical characteristics of young, recently formed stars will be studied by detecting and modeling those stars that form eclipsing binary systems. Through the distribution of rotational velocities among stars in two star clusters of different ages, an attempt will be made to understand the angular momentum loss mechanisms which are effective in the early evolution of single and binary stars. The two star clusters to be studies in detail are the Orion Nebula cluster, with age about 1 million years and the 100 million year old cluster NGC 2516. The main objective of this research is to investigate whether the presently understood mechanisms of stellar angular momentum evolution can change the rotation period distribution within the younger cluster into that observed in the older cluster.***

Mathieu，Robert“Putting Pre-Main-Sequence Stellar Evolution to the Test：Interiors and Angular Momentum“AST-0098417在这个奖项的过程中，年轻的，最近形成的恒星的物理特性将通过检测和建模那些形成食双星系统的恒星来研究。通过两个不同年龄的星星团中恒星之间的自转速度分布，将试图了解在单星和双星早期演化中有效的角动量损失机制。需要详细研究的两个星星星团是猎户座星云星团，年龄约为100万年，以及1亿岁的星团NGC 2516。本研究的主要目的是调查目前所了解的恒星角动量演化机制是否可以将年轻星团内的旋转周期分布改变为在老年星团中观察到的旋转周期分布。