Studies of Quasi-Stellar Objects and Related Active Systems

类星体及相关主动系统研究

• 批准号: 8818925
• 负责人: Joseph Miller
• 金额: $ 15万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-11-01 至 1994-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8818925&HistoricalAwards=false
• 关键词: Studies; Quasi; Stellar; Objects; Related

In recent years the availability of new detectors, especially charge-coupled detectors (CCDs), on large telescopes has made possible more detailed and revealing studies of quasi-stellar objects (QSOs) and related galaxies than was possible in the past. For the first time observers have begun to see extensive interactions between theoreticists and observers concerning the nature of the central energy sources. In the past, the major connection between theoretical work and observational results had been in the area of modeling the emission line regions, but recent observational work has provided more information about the nature of the central objects themselves. For example, considerable effort has been spent on understanding the continuum energy distribution in terms of the radiation expected from an accretion disk. Recently, researchers have taken another approach to obtaining observational insights into the structure of active galaxies and QSOs: the use of spectropolarimetry and imaging polarimetry to derive information not obtainable by conventional spectroscopic methods. In the past four years a new polarimeter which uses a CCD for a detector and has been put into a operation and the performance has been excellent. This new spectropolarimeter will be used to conduct observations of QSOs and related galaxies.

近年来，新的探测器，特别是 电荷耦合探测器（CCD），在大型望远镜上， 可能更详细和揭示类恒星的研究 类星体（QSO）和相关的星系比可能在 过去 观察家们第一次开始看到 理论家和观察家之间的相互作用， 中央能源的性质。 在过去，少校 理论工作和观测结果之间的联系 一直在模拟发射线区域，但 最近的观测工作提供了更多关于 中心对象本身的性质。 比如说， 人们已经花了相当大的努力来理解连续体 能量分布在辐射方面预期从一个 吸积盘 最近，研究人员采取了另一种方法来获得 对活动星系结构的观测见解， 类星体：使用分光偏振测量法和成像偏振测量法 获得常规光谱法无法获得的信息 方法. 在过去的四年里，一种新的偏振计， CCD为探测器，并已投入运行， 表现非常出色。 这台新的分光偏振计 用于对类星体和相关星系进行观测。