Furtak Lukas J, Labbé Ivo, Zitrin Adi, Greene Jenny E, Dayal Pratika, Chemerynska Iryna, Kokorev Vasily, Miller Tim B, Goulding Andy D, de Graaff Anna, Bezanson Rachel, Brammer Gabriel B, Cutler Sam E, Leja Joel, Pan Richard, Price Sedona H, Wang Bingjie, Weaver John R, Whitaker Katherine E, Atek Hakim, Bogdán Ákos, Charlot Stéphane, Curtis-Lake Emma, van Dokkum Pieter, Endsley Ryan, Feldmann Robert, Fudamoto Yoshinobu, Fujimoto Seiji, Glazebrook Karl, Juneau Stéphanie, Marchesini Danilo, Maseda Micheal V, Nelson Erica, Oesch Pascal A, Plat Adèle, Setton David J, Stark Daniel P, Williams Christina C
Physics Department, Ben-Gurion University of the Negev, Be'er-Sheva, Israel.
Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Melbourne, Victoria, Australia.
Nature. 2024 Apr;628(8006):57-61. doi: 10.1038/s41586-024-07184-8. Epub 2024 Feb 14.
Early JWST observations have uncovered a population of red sources that might represent a previously overlooked phase of supermassive black hole growth. One of the most intriguing examples is an extremely red, point-like object that was found to be triply imaged by the strong lensing cluster Abell 2744 (ref. ). Here we present deep JWST/NIRSpec observations of this object, Abell2744-QSO1. The spectroscopy confirms that the three images are of the same object, and that it is a highly reddened (A ≃ 3) broad emission line active galactic nucleus at a redshift of z = 7.0451 ± 0.0005. From the width of Hβ (full width at half-maximum = 2,800 ± 250 km s), we derive a black hole mass of . We infer a very high ratio of black-hole-to-galaxy mass of at least 3%, an order of magnitude more than that seen in local galaxies and possibly as high as 100%. The lack of strong metal lines in the spectrum together with the high bolometric luminosity (L = (1.1 ± 0.3) × 10 erg s) indicate that we are seeing the black hole in a phase of rapid growth, accreting at 30% of the Eddington limit. The rapid growth and high black-hole-to-galaxy mass ratio of Abell2744-QSO1 suggest that it may represent the missing link between black hole seeds and one of the first luminous quasars.
早期詹姆斯·韦布空间望远镜（JWST）的观测发现了一批红色源，它们可能代表超大质量黑洞增长过程中一个此前被忽视的阶段。最引人入胜的例子之一是一个极其红的点状天体，它被发现由强引力透镜星系团阿贝尔2744形成了三重成像（参考文献）。在此，我们展示了对这个天体阿贝尔2744 - QSO1的JWST/近红外光谱仪（NIRSpec）的深度观测。光谱证实这三个图像是同一个天体的，并且它是一个红化程度很高（A≃3）的宽发射线活跃星系核，红移量为z = 7.0451±0.0005。根据Hβ线的宽度（半高全宽 = 2800±250千米/秒），我们推导出黑洞质量为 。我们推断黑洞与星系质量的比例非常高，至少为3%，比本地星系中的比例高一个数量级，可能高达100%。光谱中缺乏强金属线以及高光度（L = (1.1±0.3)×10 尔格/秒）表明我们看到的黑洞正处于快速增长阶段，吸积率为爱丁顿极限的30%。阿贝尔2744 - QSO1的快速增长和高黑洞与星系质量比表明，它可能代表了黑洞种子与最早的一批发光类星体之一之间缺失的环节。
