International Postdoctoral Fellows Program: Tycho Reference Catalogue, A Catalogue of Positions and Proper Motions of 1 Million Stars

9501044莫里森国际初级研究员和博士后研究员计划使美国科学家和工程师能够在国外进行3至24个月的研究。该项目的奖项提供了联合研究的机会，并提供了使用国外独特或互补的设施、专业知识和实验条件的机会。该奖项将支持简·E·莫里森博士为期12个月的博士后研究访问，与西格弗里德·罗泽博士在德国海德堡的天文研究所合作。天文学研究所正在开始一个项目，通过合并两个国际星表：天文星表(AC)和第谷星表，制作一百万颗恒星的位置和自行目录，称为第谷参考星表(TRC)。这将是依巴谷系统向更高密度和更弱星等的延伸。该目录将由德国、丹麦、瑞典、俄罗斯的科学家以及美国的博士后参与制作。另一个副产品自行星表，精度低于TRC，但包含大约400万颗恒星，将使用天文星表和指南星星表编制。TRC将在天文学的许多领域有广泛的应用，如研究星系结构、双星、星团和长期视差。***

9501044 Morrison The International Junior Investigator and Postdoctoral Fellows Program enables U.S. scientists and engineers to conduct three to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad. This award will support a twelve-month postdoctoral research visit by Dr. Jane E. Morrison to work with Dr. Siegfried Roeser at the Astronomisches Rechen-Institut in Heidelberg, Germany. The Astronomisches Rechen-Institut is beginning a project to produce a catalogue of positions and proper motions of one million stars, called the Tycho Reference Catalogue (TRC), by combining two international catalogues: the Astrographic Catalogue (AC) and the Tycho Catalogue. It will be an extension of the Hipparcos system to higher star densities and fainter magnitudes. The catalogue will be produced as a collaboration between scientists in Germany, Denmark, Sweden, Russian and, by way of this postdoctoral fellow's participation, the United States. An additional by-product proper motion catalogue, less precise than the TRC, but containing roughly 4 million stars will be compiled using the Astrographic Catalogue and the Guide Star Catalogue. The TRC will have widespread applications to many fields of astronomy, such as, studies of galactic structure, binary stars, stellar clusters, and secular parallaxes. ***