The Allegheny Observatory Trigonometric Parallax Program

阿勒格尼天文台三角视差计划

• 批准号: 9218012
• 负责人: George Gatewood
• 金额: $ 37.5万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-04-01 至 1996-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9218012&HistoricalAwards=false
• 关键词: Allegheny; Observatory; Trigonometric; Parallax; Program

The Allegheny Observatory Trigonometric Parallax Program. The hallmark of the astrometric program at the Allegheny Observatory is high precision, approximately 0.001 arcsecond per parallax. Combining the Multichannel Astrometric Photometer and the new optical system of the Thaw refractor, the program has sufficient precision to obtain reliable trigonometric distances of several open star clusters as well as other luminosity standards in most parts of the Hertsprung-Russell diagram. Combined with data from a 70 year baseline photographic plate collection, the MAP/Thaw system has sufficient precision to define portions of the mass luminosity relationship previously outside of the domain of trigonometric techniques, and to make significant improvements in our understanding of the effects of age and chemical composition on the energy output of stars.

阿勒格尼天文台三角视差计划。 阿勒格尼天文台天体测量项目的特点是高精度，每视差约为 0.001 角秒。 结合多通道天体光度计和解冻折射镜的新型光学系统，该程序具有足够的精度来获得几个疏散星团的可靠三角距离以及赫茨普龙-罗素图大部分部分的其他光度标准。 结合 70 年基线照相底片收集的数据，MAP/Thaw 系统具有足够的精度来定义以前在三角技术领域之外的部分质量光度关系，并显着提高我们对年龄和化学成分对恒星能量输出影响的理解。