具有后星暴活动的类星体

发布时间：2017-12-27 05:10

本文关键词：具有后星暴活动的类星体　出处：《天文学报》2015年05期 　论文类型：期刊论文

【摘要】：利用星族合成和合成谱能量分布的方法,对10颗新的红移在0.3附近的后星暴类星体的宿主星系的星族年龄、黑洞质量以及爱丁顿比率的研究表明:这些后星暴类星体的黑洞质量约108M⊙,热光度为爱丁顿光度的百分之几,宿主星系的年龄介于几百Myr到几Gyr之间.这一结果表明在并合触发的星暴活动和类星体被触发(或光学可见)之间存在着时间延迟.后星暴类星体的合成谱能量分布显示其和极亮红外星系的联系密切,推算出的红外光度也已经达到了亮红外星系的级别,暗示这些光学光谱选择的类星体很有可能处于极亮红外星系向光学类星体演化的过程中.
[Abstract]:Using population synthesis and synthesis of spectral energy distribution method, population age, and the black hole mass ratio of Eddington research on post starburst quasars 10 new red shift in the vicinity of 0.3 host galaxies show that these black holes starburst quasars about 108M, and a few percent for the bolometric luminosity Eddington luminosity. Between the ages of the host galaxies of hundreds of Myr to several Gyr. The results show that was triggered and starburst activity and quasars triggered (or visible) exists between the time delay. After the starburst quasars show the synthesis of the spectral energy distribution and ultraluminous infrared galaxies is closely linked to the projected infrared luminosity has reached the lirgs level, suggesting that these optical spectra selected quasars are likely in the process of ultraluminous infrared galaxy evolution to optical quasars.
【作者单位】：南京大学天文与空间科学学院;
【基金】：国家自然科学基金项目(11273015和11133001) 973项目(2013CB834905)资助
【分类号】：P158
【正文快照】： 1引言近年来随着多个大规模的多波段巡天项目(例如最著名的地面斯隆数字化巡天项目,简称SDSS)以及多波段空间望远镜深场观测的开展,我们对星系形成和演化的了解不断深入.Toomre等人第1次提出了两个质量相近的旋涡星系通过并合可以形成椭圆星系[1].在这一过程中,极亮红外星系(U

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