Ages and Distances of Globular Clusters from Observations of Detached Eclipsing Binary Stars

根据分离食双星观测得出的球状星团的年龄和距离

• 批准号: 0507325
• 负责人: Ian Thompson
• 金额: $ 18.02万
• 依托单位: Carnegie Institution of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0507325&HistoricalAwards=false
• 关键词: Ages; Distances; Globular; Clusters; Observations

AST-0507325INSTITUTION: Carnegie Institution of WashingtonPI: Ian ThompsonTITLE: Ages and Distances of Globular Clusters from Observations of Detached Eclipsing Binary Stars ABSTRACTDr. Ian Thompson, of the Carnegie Institution of Washington, will undertake a program to measure ages and distances of Galactic globular clusters using spectroscopic and photometric observations of detached, eclipsing, double-lined binary stars. The program will utilize Echelle spectroscopic observations of these binaries to determine the masses of the components, and with turn-off mass-age relations it will then be possible to derive ages for the clusters in which the stars reside, independently of their distances. The cluster distances will be derived using surface brightness-color relations. The program, with observational facilities located in Chile, also has a strong international collaboration with astronomers from the Copernicus Astronomical Center in Warsaw, Poland.

AST-0507325机构：华盛顿卡内基研究所PI：Ian Kampson标题：来自分离双星观测的球状星团的年龄和距离 摘要Dr.华盛顿卡内基研究所的伊恩·汤普森将进行一项计划，利用对分离的、食的、双线双星的光谱和光度观测来测量银河系球状星团的年龄和距离。 该计划将利用这些双星的Echelle光谱观测来确定组成部分的质量，并关闭质量-年龄关系，然后可以导出恒星所在的星团的年龄，而与它们的距离无关。 聚类距离将使用表面亮度-颜色关系来推导。 该方案的观测设施设在智利，还与波兰华沙哥白尼天文中心的天文学家进行了强有力的国际合作。