The T Tauri Stars and the Pre-Main Sequence Evolution of Low Mass Stars

金牛座 T 星和低质量恒星的前主序演化

• 批准号: 8818161
• 负责人: Frederick Walter
• 金额: $ 2.33万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-02-01 至 1989-09-01
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8818161&HistoricalAwards=false
• 关键词: Tauri; Stars; Pre; Main; Sequence

During their approach to the main sequence in the Hertzsprung- Russel diagram, newly formed low mass stars pass through the T Tauri phase, which is characterized by mass loss, extreme emission lines in their spectra, and rapid variability. The Principal Investigators propose to continue with their observational study of the so-called "naked" T Tauri stars, which distinguish themselves from the classical T Tauri stars by not having any circumstellar disks (hence, the term "naked") and by the emission of X-rays. They plan to get information about the initial mass function of low mass stars, the rate of loss of circumstellar material from newly formed stars, and the formation of planetary systems.

在它们接近赫茨普龙-罗素图中的主序时，新形成的低质量恒星通过金牛座T相，其特征是质量损失，光谱中的极端发射线和快速变化。首席研究人员建议继续对所谓的“裸”金牛座T星进行观测研究，这种恒星与经典的金牛座T星的区别在于没有任何星周盘（因此被称为“裸”），并发射x射线。他们计划获得有关低质量恒星的初始质量函数、新形成恒星的星周物质损失率以及行星系统形成的信息。