Quasar Research-A Joint Program of Research with the Carnegie Institution

类星体研究——与卡内基研究所的联合研究计划

• 批准号: 8700741
• 负责人: Craig Foltz
• 金额: $ 9.75万
• 依托单位: University of Arizona
• 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: 1987-08-01 至 1990-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8700741&HistoricalAwards=false
• 关键词: Quasar; Research; Joint; Program; Carnegie

The following research will be carried out: (1) A survey of radio wavelength emitting quasi-stellar objects (QSOs) will be carried out in an attempt to understand the statistics and characteristics of strong carbon line absorption in the spectra of radio-loud QSOs. (2) An extensive complete survey for QSOs will be conducted using computer generated selection criteria based upon digitized scans of the United Kingdom Schmidt Telescope objective prism plates. (3) The Multiple Mirror Telescope Echelle Spectrograph will be used in an attempt to observe absorption in the fine-structure lines of the ultraviolet multiplets of the carbon line in moderate redshift QSOs in order to measure or set limits on the cosmic microwave background temperature at early epochs. These and other moderate- and high-resolution spectroscopic data will be used as diagnostic probes of the conditions in QSO absorption line regions. (4) The Echelle Spectrograph on the Kitt Peak National Observatory 4-m telescope will be used to observe line profiles in high redshift QSOs. (5) A search will be made for quasars near the line-of-sight of extremely low surface brightness galaxies. (6) A fraction of blazars in a complete radio sample will be studied to test unified models of radio sources involving relativistic beams. The energetics of individual beamed sources will be studied using the energy distributions in the fluxes observed in the X-ray to radio wavelength region of the spectra.

(1)对射电波长发射类恒星天体（qso）进行调查，试图了解射电波长发射类恒星天体光谱中强碳线吸收的统计和特征。(2)根据英国施密特望远镜物镜棱镜板的数字化扫描，利用计算机生成的选择标准，对qso进行广泛的全面调查。(3)利用多镜望远镜梯队光谱仪，尝试观测中等红移qso中碳谱线紫外多重星的精细结构谱线吸收，以测量或限定宇宙微波背景温度的早期时代。这些和其他中分辨率和高分辨率光谱数据将被用作QSO吸收线区域条件的诊断探针。(4)利用基特峰国家天文台4米望远镜上的梯队摄谱仪观测高红移qso的线廓。(5)在极低表面亮度星系的视线附近，将进行类星体的搜索。(6)将研究完整射电样本中的一小部分耀变体，以检验涉及相对论光束的射电源的统一模型。将利用在光谱的x射线到无线电波长区域观察到的通量中的能量分布来研究单个光束源的能量学。