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arXiv 1506.01765astro-ph.GA
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一个z=5.363的超亮类星体与一个100亿太阳质量的黑洞和一个z~5的富金属DLA

An ultra-luminous quasar at z=5.363 with a ten billion solar mass black hole and a Metal-Rich DLA at z~5

Feige Wang, Xue-Bing Wu, Xiaohui Fan, Jinyi Yang, Zheng Cai, Weimin Yi, Wenwen Zuo, Ran Wang, Ian D. McGreer, Luis C. Ho, Minjin Kim, Qian Yang, Fuyan Bian, Linhua Jiang

摘要:

我们报告了一个超亮类星体J030642.51+185315.8(以下简称J 0306 +1853)的发现,它的红移为5.363,它拥有一个具有$M_{BH} = (1.07 \pm 0.27) \times10^{10}~M_\odot$的超大质量黑洞(SMBH)。J 0306 +1853的绝对星等为$M_{1450}=-28.92$,热光度为$L_{bol}\sim3.4\times10^{14} L_{\odot}$,是早期宇宙中最明亮的天体之一。它不太可能是一个波束源,因为它的通量变化很小,射电响度很低,发射谱线很宽。此外,在该类星体的吸收光谱中还发现了一个含$\rm [M/H]=-1.3\pm0.1$的$z=4.986$阻尼Ly $α$系统(DLA),它是$z \gtrsim 5$中最富金属的DLA之一。这种超亮类星体对类星体光度函数的亮端和黑洞质量函数的暗端有很强的约束。它将提供一个独特的实验室,以研究BH的增长和BH与宿主星系之间的共同演化与多波长跟踪观测。未来的高分辨率光谱将为DLA和J 0306 +1853视线范围内的其他吸收系统提供更多的见解。

英文摘要:

We report the discovery of an ultra-luminous quasar J030642.51+185315.8 (hereafter J0306+1853) at redshift 5.363, which hosts a super-massive black hole (SMBH) with $M_{BH} = (1.07 \pm 0.27) \times10^{10}~M_\odot$. With an absolute magnitude $M_{1450}=-28.92$ and bolometric luminosity $L_{bol}\sim3.4\times10^{14} L_{\odot}$, J0306+1853 is one of the most luminous objects in the early Universe. It is not likely to be a beamed source based on its small flux variability, low radio loudness and normal broad emission lines. In addition, a $z=4.986$ Damped Ly$α$ system (DLA) with $\rm [M/H]=-1.3\pm0.1$, among the most metal rich DLAs at $z \gtrsim 5$, is detected in the absorption spectrum of this quasar. This ultra-luminous quasar puts strong constraint on the bright-end of quasar luminosity function and massive-end of black hole mass function. It will provide a unique laboratory to the study of BH growth and the co-evolution between BH and host galaxy with multi-wavelength follow-up observations. The future high resolution spectra will give more insights to the DLA and other absorption systems along the line-of-sight of J0306+1853.

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。

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