Parallax and Proper Motions of Selected Stars

选定恒星的视差和固有运动

• 批准号: 8713841
• 负责人: Philip Ianna
• 金额: $ 36.75万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-12-01 至 1991-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8713841&HistoricalAwards=false
• 关键词: Parallax; Proper; Motions; Selected; Stars

Drs. Ianna and Fredrick, at the University of Virgina, will continue their observational program to determine the distances (parallaxes), the absolute magnitudes, and the proper motions of a select sample of relatively nearby stars. The project has components based in both the Northern and the Southern Hemispheres with observations obtained from telescopes located in Virginia and in Australia. Data which are obtained from very precise measurements of the positions, the motions, and the brightnesses of nearby stars form the basis for the cosmic distance scale used by astronomers. The long term astrometry program conducted by Drs. Ianna and Fredrick provides an essential contribution to this fundamental data base.

哥伦比亚大学的Ianna和Fredrick博士 继续他们的观测计划， （绝对大小），和自行的一个 选择相对较近的恒星样本。 该项目 位于北方和南半球的组件 从位于弗吉尼亚州的望远镜获得的观测结果， 在澳大利亚 这些数据是从非常精确的测量中获得的。 附近恒星的位置、运动和亮度 天文学家使用的宇宙距离尺度的基础。 的 Ianna和Fredrick博士进行的长期天体测量计划 为这一基础数据库做出了重要贡献。