QSOs as Signposts to Galaxy Evolution: Spectroscopic Clues to Winds, Jets, and Accretion

对于低红移类星体，获奖者和其他人已经证明了黑洞质量、爱丁顿比和光谱特性之间的明确关系，表明在具有最高爱丁顿比的qso中存在大量密集的、可能富含金属的发射在线气体。获奖者将把这些关系应用于更高红移（1.2 -2.7）的qso，以探索黑洞的吸积历史。在这些红移中，氢H B， [OIII], He II ？4686，和混合feii发射被移到1 um -5 um的大气“窗口”，紫外发射和宽吸收线移到光学区。该计划将涉及国家设施的近红外光谱以及霍比-埃伯利望远镜的1 -1.3微米。现有的紫外静止框架光谱将被使用，并在需要时进行额外的地面光学观测（McDonald 2.7m和HET）。获奖者和学生的试点项目已经证明了这些观察、分析和解释的可行性。

AST 0206261Wills, B JFor low redshift quasars, the awardee and others have demonstrated clear relationships between black hole mass, the Eddington ratio, and spectroscopic properties, showing that copious dense, possibly metal- enriched, emission-line gas is present in the QSOs with highest Eddington ratio. The awardee will apply these relationships to QSOs at higher redshifts (1.2 -2.7), to explore the accretion history of the black hole. At these redshifts the important diagnostic lines of hydrogen H B, [OIII], He II ? 4686, and blended Fe II emission are shifted into the 1 um -5 um atmospheric 'windows ', and the UV emission and broad absorption lines shifted into the optical region. This program will involve near-infrared spectroscopy on national facilities as well as at 1 um -1.3 um with the Hobby-Eberly telescope. Existing UV rest-frame spectra will be used, with additional ground-based optical observations where needed (McDonald 2.7m and the HET). A pilot program by the awardee and student has demonstrated the feasibility of these observations, analysis, and interpretation.