UNCOVER：z=8.50宽线AGN的NIRSpec证认

Vasily Kokorev; Seiji Fujimoto; Ivo Labbe; Jenny E. Greene; Rachel Bezanson; Pratika Dayal; Erica J. Nelson; Hakim Atek; Gabriel Brammer; Karina I. Caputi; Iryna Chemerynska; Sam E. Cutler; Robert Feldmann; Yoshinobu Fudamoto; Lukas J. Furtak; Andy D. Goulding; Anna de Graaff; Joel Leja; Danilo Marchesini; Tim B. Miller; Themiya Nanayakkara; Pascal Oesch; Richard Pan; Sedona H. Price; David J. Setton; Renske Smit; Mauro Stefanon; Bingjie Wang; John R. Weaver; Katherine E. Whitaker; Christina C. Williams; Adi Zitrin

UNCOVER：z=8.50宽线AGN的NIRSpec证认

星系天体物理 2023-10-17 v4

作者: Vasily Kokorev , Seiji Fujimoto , Ivo Labbe , Jenny E. Greene , Rachel Bezanson , Pratika Dayal , Erica J. Nelson , Hakim Atek , Gabriel Brammer , Karina I. Caputi , Iryna Chemerynska , Sam E. Cutler , Robert Feldmann , Yoshinobu Fudamoto , Lukas J. Furtak , Andy D. Goulding , Anna de Graaff , Joel Leja , Danilo Marchesini , Tim B. Miller , Themiya Nanayakkara , Pascal Oesch , Richard Pan , Sedona H. Price , David J. Setton , Renske Smit , Mauro Stefanon , Bingjie Wang , John R. Weaver , Katherine E. Whitaker , Christina C. Williams , Adi Zitrin

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摘要

JWST的深场观测揭示了一类新兴的红色点状源族群，可能提供假想的超大质量黑洞种子与观测到的类星体之间的联系。在本工作中，我们展示了来自JWST第一轮UNCOVER Treasury巡天的JWST/NIRSpec光谱，对象为 $z=8.50$ 处一个吸积中的大质量黑洞，其H $\beta$ 线显示明确的宽线成分，FWHM = $3439\pm413$ km s $^{-1}$ ，典型属于活动星系核(AGN)的宽线区。该天体的AGN性质还得到高电离发射线及点源形貌的进一步支持。我们算出黑洞质量log $_{10}(M_{\rm BH}/M_\odot)=8.17\pm0.42$ ，及辐射光度 $L_{\rm bol}\sim6.6\times10^{45}$ erg s $^{-1}$ 。这些值意味着该天体以爱丁顿极限约 $40\%$ 的速率吸积。对光学与近红外光谱能量分布的细致建模，连同ALMA的约束，给出恒星质量上限log $_{10}(M_{\rm *}/M_\odot)<8.7$ ，这将导致黑洞与宿主质量比至少约 $30\%$ 的前所未有的比值。这比本地类星体(QSOs)高数个量级，但与JWST近期高红移AGN研究一致。该发现表明，不可忽略比例的超大质量黑洞要么起始于大质量种子，要么在高红移以超爱丁顿速率增长。鉴于对高- $z$ 暗弱AGN的数密度预测，未来更大样本的NIRSpec观测将使我们进一步研究早期宇宙中的星系–黑洞共演化。

关键词

宽线AGN JWST NIRSpec 高红移黑洞超大质量黑洞种子星系–黑洞共演化爱丁顿吸积

引用

@article{arxiv.2308.11610,
  title  = {UNCOVER: A NIRSpec Identification of a Broad Line AGN at z = 8.50},
  author = {Vasily Kokorev and Seiji Fujimoto and Ivo Labbe and Jenny E. Greene and Rachel Bezanson and Pratika Dayal and Erica J. Nelson and Hakim Atek and Gabriel Brammer and Karina I. Caputi and Iryna Chemerynska and Sam E. Cutler and Robert Feldmann and Yoshinobu Fudamoto and Lukas J. Furtak and Andy D. Goulding and Anna de Graaff and Joel Leja and Danilo Marchesini and Tim B. Miller and Themiya Nanayakkara and Pascal Oesch and Richard Pan and Sedona H. Price and David J. Setton and Renske Smit and Mauro Stefanon and Bingjie Wang and John R. Weaver and Katherine E. Whitaker and Christina C. Williams and Adi Zitrin},
  journal= {arXiv preprint arXiv:2308.11610},
  year   = {2023}
}

备注

14 pages, 6 figures, 2 tables. Accepted for a publication in ApJL

UNCOVER：z=8.50宽线AGN的NIRSpec证认

摘要

关键词

引用

备注

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