Collaborative Research: Sharpening the Lithium Probe of Stellar Evolution

合作研究：改进恒星演化的锂探针

• 批准号: 1211699
• 负责人: Constantine Deliyannis
• 金额: $ 31.63万
• 依托单位: Indiana University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1211699&HistoricalAwards=false
• 关键词: Collaborative; Research; Sharpening; Lithium; Probe

In this collaborative project, the PI's will use spectroscopy and photometry to measure the abundances of Li and other elements for hundreds of stars in seven open clusters, in order to constrain models of interior stellar structure. The collaborative component of the project will bring together photometry and spectroscopy expertise so that the investigators can address the mystery of anomalous Li abundances, which may indicate that additional, as yet unknown, physical mechanisms act in stars. Both PI?s have institutional access to appropriate observatories (WIYN and Mt. Laguna). The work will have broader impacts to Galactic evolution and cosmology, and the PI?s will train undergraduate and graduate students in research at two universities.

在这个合作项目中，PI将使用光谱学和光度法来测量七个疏散星团中数百颗恒星的Li和其他元素的丰度，以约束恒星内部结构的模型。该项目的合作组成部分将汇集光度学和光谱学专业知识，以便研究人员能够解决异常锂丰度的奥秘，这可能表明恒星中存在额外的，迄今未知的物理机制。两个π吗?我们在机构上有机会进入适当的天文台（维也纳天文台和拉古纳山）。这项工作将对银河系演化和宇宙学产生更广泛的影响，而PI？S将在两所大学培养本科生和研究生进行研究。