Investigations of Quasars and Emission-Line Galaxies

类星体和发射线星系的研究

• 批准号: 8615485
• 负责人: Gordon MacAlpine
• 金额: $ 3.9万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-08-15 至 1990-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8615485&HistoricalAwards=false
• 关键词: Investigations; Quasars; Emission; Line; Galaxies

The principal objectives of the research program are to produce a large, complete, well defined, and carefully controlled sample of bright quasars; to obtain slit spectrophotometry and imaging observations for purposes of statistical investigations as well as studies of physical and chemical gas properties; and to carry out detailed theoretical analyses of the emitting and absorbing clouds between us and the quasars. The new quasars are to be detected by means of their optical spectral line characteristics. A fully automated object selection procedure and provisions for obtaining more detailed observations of selected objects at available telescopes are important improvements over previous surveys. Major contirbutions to astronomy can be expected through increased understanding of: 1) the brightness and other relationships for various types of active galaxies, 2) the broad- absorption-lines in quasar spectra, 3) the quasar redshift and brightness distribution, and 4) possible correlations in the redshifts of close quasar pairs. This survey of quasars and emission-line galaxies will complement observations being carried out by other groups of astronomers.

该研究计划的主要目标是产生一个 大的，完整的，定义明确的，仔细控制的样本， 明亮的类星体;获得狭缝分光光度法和成像 为统计调查目的的观察，以及 研究气体的物理和化学性质;并进行 详细的理论分析的发射和吸收 我们和类星体之间的云层 这些新的类星体 通过它们的光谱线特征检测。 完全自动化的对象选择程序和 获取选定物体的更详细观测结果. 现有的望远镜比以前的望远镜有了重要的改进， 调查。 对天文学的重大贡献可以通过 增加理解：1）亮度和其他 各种类型的活动星系的关系，2）广泛的- 类星体光谱中的吸收线，3）类星体的红移和 亮度分布，和4）可能的相关性， 类星体对的红移。 这次对类星体的调查 发射线星系将补充正在进行的观测， 被其他天文学家团体所发现。