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.

研究计划的主要目标是探索发光的准恒星观测环境（QSOS）和强大的射电星系的环境的那些方面，这些射线星系似乎最有可能深入了解负责产生活性核中的物理机制。这些对象。 将进行五个特定的研究项目：1。对一小部分陡峭的Radio-Spectrum QSO样本进行了深入的成像和光谱研究，该样本专门旨在理解扩展的电离气体和其他观察到的特性之间存在相关性。 2。对三个或四个宽光线线射电星系的类似研究，显示了广泛的延长电离气体。 3。一项调查，以检测中间偏移周围的扩展排放线区域（大于0.6，小于0.9）QSO，以研究这种现象的进化历史。 4。对第三剑桥无线电调查（3CR）星系和QSO的完整样本进行深刻的调查，其红移在0.8到1.3之间，以探索扩展发射线辐射的强度与分布之间的相关性与连续分布之间的相关性和颜色（用于射电星系）和无线电结构。 5。对Cygnus A的系统成像和光谱研究将提供数据，该数据将导致诊断排放线的强度比率图，并更好地了解恒星和气体的运动学。