类星体质光平面II：高质量的关闭演化和同步之谜
The Quasar Mass-Luminosity Plane II: High Mass Turnoff Evolution and a Synchronization Puzzle
摘要：
我们使用62，185个来自斯隆数字巡天DR5样本的类星体和基于H β，Mg II和C IV线宽度的标准维里质量标度律以及相邻的连续光谱光度来探索类星体的最大质量作为红移的函数，我们发现它是尖锐的和不断发展的。这种演化的意义在于，高质量黑洞在比低质量黑洞更高的红移处停止了它们的发光吸积。此外，任何给定质量的类星体的关闭都比给定其宿主星系的动力学所预期的更高度同步。我们调查潜在的签名类星体关闭机制，包括缺乏高质量的类星体在低爱丁顿比。这些新的结果允许更仔细地检查用于模拟类星体吸积和关闭的几个常见假设。
英文摘要：
We use 62,185 quasars from the Sloan Digital Sky Survey DR5 sample and standard virial mass scaling laws based on the widths of H beta, Mg II, and C IV lines and adjacent continuum luminosities to explore the maximum mass of quasars as a function of redshift, which we find to be sharp and evolving. This evolution is in the sense that high-mass black holes cease their luminous accretion at higher redshift than lower-mass black holes. Further, turnoff for quasars at any given mass is more highly synchronized than would be expected given the dynamics of their host galaxies. We investigate potential signatures of the quasar turnoff mechanism, including a dearth of high-mass quasars at low Eddington ratio. These new results allow a closer examination of several common assumptions used in modeling quasar accretion and turnoff.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
