Bringing eclipsing binary stars to the next level of benchmark precision: Critical testing of stellar evolution and fundamental understanding of young and low-mass stellar physics

将食双星提高到基准精度的新水平：恒星演化的严格测试以及对年轻和低质量恒星物理的基本理解

• 批准号: 1009810
• 负责人: Keivan Stassun
• 金额: $ 35.4万
• 依托单位: Vanderbilt University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1009810&HistoricalAwards=false
• 关键词: Bringing; eclipsing; binary; stars; next

In this project, Dr. Hebb and her collaborators will conduct a three-part study of the fundamental properties of low-mass stars. In the last decade, it has become apparent to the stellar community that theoretical models of the masses and radii of unevolved low-mass stars differ significantly from observations. In this study, Dr. Hebb will determine the chemical abundances of certain stars where the masses, radii, and temperatures are accurately known, explore the effect of magnetically-induced activity on the determinations of luminosity and radius, and obtain critical data on very young systems to test models of the phases leading up to full hydrogen fusion. The project is expected to have a broad scientific impact because fundamental stellar data can be used in a variety of applications, including the determination of exoplanet masses and the characterization of the star formation process. The research team will also continue their work with students at Vanderbilt and at Fisk College.

在这个项目中，赫布博士和她的合作者将对低质量恒星的基本特性进行三部分研究。 在过去的十年中，恒星界已经意识到，未演化的低质量恒星的质量和半径的理论模型与观测结果存在显着差异。 在这项研究中，赫布博士将确定某些质量、半径和温度准确已知的恒星的化学丰度，探索磁感应活动对光度和半径测定的影响，并获得非常年轻恒星的关键数据。系统来测试导致完全氢聚变的阶段模型。该项目预计将产生广泛的科学影响，因为基本恒星数据可用于各种应用，包括确定系外行星质量和表征恒星形成过程。 研究团队还将继续与范德比尔特大学和菲斯克学院的学生合作。