Critical Tests of Stellar Evolution Theory

恒星演化理论的关键测试

• 批准号: 1007992
• 负责人: Guillermo Torres
• 金额: $ 50.38万
• 依托单位: Smithsonian Institution Astrophysical Observatory
• 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: 2010-10-01 至 2014-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1007992&HistoricalAwards=false
• 关键词: Critical; Tests; Stellar; Evolution; Theory

This project is an observational program to obtain precise measurements of various types of binary stars in order to test models of stellar structure. In general, most theoretical models are calibrated using the properties of the Sun; the models for other stars are therefore extrapolations in stellar mass or composition. The main goal for this project is to obtain spectroscopic, photometric, and astrometric data for certain nearby, low-mass stars to improve the empirical mass-radius relation to a precision of a few percent.Data from this project will lead to improved models of stellar evolution, which can be applied to a variety of problems in stellar astrophysics including the accurate determination of the properties of extrasolar planets. The project will also provide opportunities for undergraduate researchers.

该项目是一个观测方案，目的是对各种类型的双星进行精确测量，以检验恒星结构模型。 一般来说，大多数理论模型都是使用太阳的性质来校准的;因此，其他恒星的模型是恒星质量或成分的外推。 该项目的主要目标是获得某些附近低质量恒星的光谱、光度和天体测量数据，以将经验质量-半径关系提高到百分之几的精度。该项目的数据将改进恒星演化模型，可应用于恒星天体物理学中的各种问题，包括太阳系外行星性质的准确确定。 该项目还将为本科研究人员提供机会。