Environments of Quasi-Stellar Objects (QSOs) and Radio Galaxies

准恒星天体 (QSO) 和射电星系的环境

• 批准号: 8715330
• 负责人: R. Brent Tully
• 金额: $ 21.73万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-05-01 至 1993-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8715330&HistoricalAwards=false
• 关键词: Environments; Quasi; Stellar; Objects; QSOs

The principal objectives of the research program are to explore those aspects of the environment of luminous quasi-stellar ob- jects (QSOs) and powerful radio galaxies that seem most likely to give insights into the physical mechanisms responsible for the production of the active nucleus in these objects. Five specific research projects will be carried out: 1. An intensive imaging and spectroscopic study of a small sample of steep-radio-spectrum QSOs designed specifically to under- stand the correlation between the presence of extended ionized gas and other observed properties. 2. A similar study of three or four broad-spectral-line radio galaxies showing extensive extended ionized gas. 3. A survey to detect extended emission-line regions around intermediate-redshift (greater than 0.6 and less than 0.9) QSOs in order to study the evolutionary history of this phenomenon. 4. A continuation of a deep-imaging survey of a complete sample of Third Cambridge Radio Survey (3CR) galaxies and QSOs with redshifts between 0.8 and 1.3 to explore correlations between the strength and distribution of the extended emission-line radiation and the continuum distribution and color (for the radio galaxies) and the radio structure. 5. A systematic and thorough imaging and spectroscopic investiga- tion of Cygnus A which will provide data that will result in intensity-ratio maps for diagnostic emission lines and give a better understanding of the kinematics of the stars and gas.

该研究计划的主要目标是探索发光的准恒星天体（qso）和强大的射电星系环境的那些方面，这些方面似乎最有可能深入了解这些天体中产生活动核的物理机制。将开展五个具体的研究项目：1。一个密集的成像和光谱研究小样本的陡峭无线电频谱qso设计，专门了解延伸电离气体的存在和其他观察性质之间的相关性。2. 对三四个广谱线射电星系的类似研究显示了大量延伸的电离气体。3. 为了研究这一现象的进化史，对中红移（大于0.6和小于0.9）qso周围的扩展发射线区域进行了探测。4. 对第三次剑桥射电调查（3CR）星系和红移在0.8和1.3之间的qso的完整样本进行深度成像调查的延续，以探索扩展发射在线辐射的强度和分布与连续分布和颜色（对于射电星系）和射电结构之间的相关性。​5. 对天鹅座A进行系统和彻底的成像和光谱调查，这将提供数据，为诊断发射线提供强度比图，并更好地了解恒星和气体的运动学。