A Microdensitometer for Astronomy and Other Research at the University of Virginia

弗吉尼亚大学用于天文学和其他研究的微密度计

• 批准号: 8718867
• 负责人: Philip Ianna
• 金额: $ 12.2万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-06-01 至 1989-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8718867&HistoricalAwards=false
• 关键词: Microdensitometer; Astronomy; Other; Research; University

The Astronomy Department of the University of Virginia intends to acquire a Perkin.Elmer PDS microdensitometer and accessories. The PDS will be used primarily in conjunction with the large (over 146,000) collection of astrometric plates in the files of the Leander McCormick Observatory. The measuring engine with a laser interferometry coordinate readout will improve accuracy and productivity in the existing astrometric programs. The astrometric projects which will benefit most from the PDS include: 1) studies of parallaxes of Hyades cluster members, white dwarfs and the population II main sequence stars; and 2) analysis of astrometric binaries. Studies where the PDS system will contribute to ongoing research in the department include: 1) surface photometry in faint outlying regions of spiral galaxies; 2) determinations of the luminosity function for clusters of galaxies; 3) detection and measurement of Hydrogen alpha from emission line galaxies in clusters; and 4) analysis of ground-based optical data of interesting ultraviolet (UV) sources found in the Ultraviolet Imaging Telescope program.

弗吉尼亚大学天文学系打算购买一台 Perkin.Elmer PDS 微密度计和配件。 PDS 将主要与利安德·麦考密克天文台档案中的大量（超过 146,000 个）天体测量板结合使用。 具有激光干涉测量坐标读数的测量引擎将提高现有天体测量程序的准确性和生产率。将从PDS中受益最多的天体测量项目包括：1）毕星团成员、白矮星和第二星族主序星视差的研究； 2）天体测量双星的分析。 PDS 系统将有助于该部门正在进行的研究包括：1）螺旋星系微弱外围区域的表面光度测量； 2）确定星系团的光度函数； 3）探测和测量星团中发射线星系的氢α； 4）对紫外线成像望远镜计划中发现的有趣紫外线（UV）源的地面光学数据进行分析。