Binary Star Speckle Interferometry and Photometry

双星散斑干涉测量和光度测量

• 批准号: 8915324
• 负责人: Harold McAlister
• 金额: $ 18.7万
• 依托单位: Georgia State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-01-15 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8915324&HistoricalAwards=false
• 关键词: Binary; Star; Speckle; Interferometry; Photometry

With this grant Drs. McAlister and Hartkopf at Georgia State University will continue a program of high angular resolution observations of binary star systems. Binary stars are the only source for the fundamental determination of stellar masses, and they can provide direct determinations of stellar distances, radii, luminosities, and temperatures. The Georgia State University (GSU) program of binary star of binary star speckle interferometry is the only such effort in the world routinely applying modern methods of high resolution imaging speckle techniques to these fundamental astrophysical problems. The GSU speckle group operates state-of- the-art data acquisition and analysis facilities and is routinely granted time on large telescopes at the U.S. national observatories and elsewhere. Speckle observations are being used to greatly improve the orbital elements of known binaries and to calculate the orbits of resolved spectroscopic systems and other newly discovered binaries. Techniques are also being developed and applied that enable the recovery of intensity and color information for the individual components of binary stars in a regime of angular separation heretofore inaccessible to existing methods.

格鲁吉亚州立大学的麦卡利斯特博士和哈特科普夫博士 大学将继续高角分辨率的计划 星星系统的观测。 双星是唯一 恒星质量基本测定的来源，以及 它们可以提供恒星距离，半径， 光度和温度 格鲁吉亚州立大学（GSU） 双星星星的散斑干涉程序是双星星星的散斑干涉程序， 只有这样的努力在世界上例行应用现代方法， 高分辨率成像散斑技术，这些基本的 天体物理问题 GSU斑点组运行状态- 最先进的数据采集和分析设施，并定期 授予美国国家天文台大型望远镜的时间 和其他地方。 散斑观测正被广泛用于 改进已知双星的轨道要素， 解析光谱系统和其他新发现的 二进制。 技术也正在开发和应用， 使恢复的强度和颜色信息的 双星的单个组成部分在一个制度的角度 分离是迄今为止现有方法无法实现的。