The Discovery of a Luminous Broad Absorption Line Quasar at a Redshift of 7.02
The Discovery of a Luminous Broad Absorption Line Quasar at a Redshift of 7.02
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红移 7.02 的发光宽吸收线类星体的发现
DOI：
10.3847/2041-8213/aaf1d2
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发表时间：
2018-10
影响因子：
7.9
通讯作者：
et al.
中科院分区：
文献类型：
--
作者：
Wang Feige;Yang Jinyi;Fan Xiaohui;et al.
尽管进行了大量的努力，但迄今为止只有两个z > 7的类星体被发现，这是由于低空间密度和更普遍的银河系冷矮星在类星体选择中的高污染。这限制了我们目前对超大质量黑洞生长机制和再电离历史的了解。在这封信中，我们报告了一个z = 7.021的发光类星体的发现，DELS J003836.10-152723.6（以下简称J 0038 -1527），使用暗能量光谱仪器遗留成像调查，Pan-STARRS 1（PS1）成像调查以及宽视场红外调查探索中红外全天空调查的光度数据进行选择。J 0038 -1527的绝对星等为M1450 = -27.1，辐射热光度为LBol = 5.6 × 1013 L，是已知z > 7的最明亮类星体。深度光学到近红外光谱观测表明，J 0038 -1527拥有一个13亿太阳质量的黑洞，在爱丁顿极限吸积，爱丁顿比为1.25 ± 0.19。J 0038 -1527的C iv宽发射线相对于类星体的系统红移蓝移超过3000 km s−1。对高质量光谱的更详细的研究揭示了三条极高速的C iv宽吸收线，其速度为光速的0.08至0.14倍，总的“balnicity”指数超过5000 km s−1，表明存在相对论性外流。J 0038 -1527是第一个在再电离时期发现的具有如此强烈外流的类星体，因此提供了一个独特的实验室来研究活动星系核对早期宇宙中最大质量星系的形成和生长的反馈。
Despite extensive efforts, to date only two quasars have been found at z > 7, due to a combination of low spatial density and high contamination from more ubiquitous Galactic cool dwarfs in quasar selection. This limits our current knowledge of the super-massive black hole growth mechanism and reionization history. In this Letter, we report the discovery of a luminous quasar at z = 7.021, DELS J003836.10–152723.6 (hereafter J0038–1527), selected using photometric data from Dark Energy Spectroscopic Instrument Legacy Imaging Survey, Pan-STARRS1 (PS1) imaging Survey, as well as Wide-field Infrared Survey Explore mid-infrared all-sky survey. With an absolute magnitude of M1450 = –27.1 and bolometric luminosity of LBol = 5.6 × 1013 L⊙, J0038–1527 is the most luminous quasar known at z > 7. Deep optical to near-infrared spectroscopic observations suggest that J0038–1527 hosts a 1.3 billion solar mass black hole accreting at the Eddington limit, with an Eddington ratio of 1.25 ± 0.19. The C iv broad emission line of J0038–1527 is blueshifted by more than 3000 km s−1 relative to the quasar systemic redshift. More detailed investigations of the high-quality spectra reveal three extremely high-velocity C iv broad absorption lines with velocity from 0.08 to 0.14 times the speed of light and total “balnicity” index of more than 5000 km s−1, suggesting the presence of relativistic outflows. J0038–1527 is the first quasar found at the epoch of reionization with such strong outflows, and therefore provides a unique laboratory to investigate active galactic nuclei feedback on the formation and growth of the most massive galaxies in the early universe.
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DOI：
10.1088/0004-637x/790/2/145
发表时间：
2013-11
期刊：
The Astrophysical Journal
影响因子：
--
作者：
G. de Rosa;B. Venemans;R. Decarli;M. Gennaro;R. Simcoe;M. Dietrich;B. Peterson;F. Walter;S. Frank;R. McMahon;P. Hewett;D. Mortlock;C. Simpson
通讯作者：
G. de Rosa;B. Venemans;R. Decarli;M. Gennaro;R. Simcoe;M. Dietrich;B. Peterson;F. Walter;S. Frank;R. McMahon;P. Hewett;D. Mortlock;C. Simpson
DOI：
10.1088/0004-637x/784/2/169
发表时间：
2014-02
期刊：
The Astrophysical Journal
影响因子：
--
作者：
Y. Jiang 姜;J. Stone;S. Davis
通讯作者：
Y. Jiang 姜;J. Stone;S. Davis
影响因子：
6.5
作者：
R. Maiolino;E. Oliva;F. Ghinassi;M. Pedani;F. Mannucci;R. Mújica;Y. Juarez
通讯作者：
R. Maiolino;E. Oliva;F. Ghinassi;M. Pedani;F. Mannucci;R. Mújica;Y. Juarez
DOI：
10.3847/1538-4357/ab2be5
发表时间：
2018-10
期刊：
The Astrophysical Journal
影响因子：
--
作者：
Feige Wang;Jinyi Yang;Xiaohui Fan;Xue-bing Wu;M. Yue;Jiangtao Li;F. Bian;Linhua Jiang;E. B
通讯作者：
Feige Wang;Jinyi Yang;Xiaohui Fan;Xue-bing Wu;M. Yue;Jiangtao Li;F. Bian;Linhua Jiang;E. B
DOI：
10.1086/321167
发表时间：
2001-05
期刊：
The Astronomical Journal
影响因子：
--
作者：
S. C. D. E. V. Berk;E. al.
通讯作者：
S. C. D. E. V. Berk;E. al.