A high black-hole-to-host mass ratio in a lensed AGN in the early Universe

• 成果类型: Article
• 署名作者: Furtak, Lukas J.; Labbe, 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; Bogdan, Akos; Charlot, Stephane; Curtis-Lake, Emma; van Dokkum, Pieter; Endsley, Ryan; Feldmann, Robert; Fudamoto, Yoshinobu; Fujimoto, Seiji; Glazebrook, Karl; Juneau, Stephanie; Marchesini, Danilo; Maseda, Micheal V.; Nelson, Erica; Oesch, Pascal A.; Plat, Adele; Setton, David J.; Stark, Daniel P.; Williams, Christina C.
• 署名单位: Ben-Gurion University of the Negev; Swinburne University of Technology; Princeton University; University of Groningen; Kapteyn Astronomical Institute; Sorbonne Universite; Centre National de la Recherche Scientifique (CNRS); Yale University; Northwestern University; Northwestern University; Max Planck Society; Pennsylvania Commonwealth System of Higher Education (PCSHE); University of Pittsburgh; Pennsylvania Commonwealth System of Higher Education (PCSHE); University of Pittsburgh; University of Copenhagen; Niels Bohr Institute; University of Massachusetts System; University of Massachusetts Amherst; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Tufts University; Smithsonian Institution; University of Hertfordshire; University of Texas System; University of Texas Austin; University of Zurich; Waseda University; National Institutes of Natural Sciences (NINS) - Japan; National Astronomical Observatory of Japan (NAOJ); University of Wisconsin System; University of Wisconsin Madison; University of Colorado System; University of Colorado Boulder; University of Geneva; University of Arizona
• 刊物名称: Nature
• ISSN/ISSBN: 0028-5076
• DOI: 10.1038/s41586-024-07184-8
• 发表日期: 2024-04-04
• 关键词: digital sky survey; dust content; quasars; galaxies; extinction; emission; SPECTRA; MODEL; LAW

摘要

Early JWST observations have uncovered a population of red sources that might represent a previously overlooked phase of supermassive black hole growth1-3. 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. 4). 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 (AV similar or equal to 3) broad emission line active galactic nucleus at a redshift of zspec = 7.0451 +/- 0.0005. From the width of H beta (full width at half-maximum = 2,800 +/- 250 km s-1), we derive a black hole mass of MBH=4-1+2x107M circle dot\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${M}_{{\rm{BH}}}={4}_{-1}<^>{+2}\times 1{0}<^>{7}\,{M}_{\odot }$$\end{document}. 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 galaxies5 and possibly as high as 100%. The lack of strong metal lines in the spectrum together with the high bolometric luminosity (Lbol = (1.1 +/- 0.3) x 1045 erg s-1) 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 seeds6 and one of the first luminous quasars7. JWST/NIRSpec observations of Abell2744-QSO1 show a high black-hole-to-host mass ratio in the early Universe, which indicates that we are seeing the black hole in a phase of rapid growth, accreting at 30% of the Eddington limit.