JWST CEERS & JADES Active Galaxies at z = 4-7 Violate the Local $M_\bullet-M_\star$ Relation at $>3σ$: Implications for Low-Mass Black Holes and Seeding Models
Fabio Pacucci, Bao Nguyen, Stefano Carniani, Roberto Maiolino, Xiaohui Fan
备注：
Accepted for publication in The Astrophysical Journal Letters. 14 pages, 5 figures
发表信息：
The Astrophysical Journal Letters, 2023, Volume 957, Number 1
JWST is revolutionizing our understanding of the high-$z$ Universe by expanding the black hole horizon, looking farther and to smaller masses, and revealing the stellar light of their hosts. By examining JWST galaxies at $z=4-7$ that host H$α$-detected black holes, we investigate (i) the high-$z$ $M_\bullet-M_\star$ relation and (ii) the black hole mass distribution, especially in its low-mass range ($M_\bullet \lesssim 10^{6.5} M_\odot$). With a detailed statistical analysis, our findings conclusively reveal a high-$z$ $M_\bullet-M_\star$ relation that deviates at $>3σ$ confidence level from the local relation. The high-$z$ relation is: $\log(M_\bullet/M_\odot) = -2.43^{+0.83}_{-0.83} + 1.06^{+0.09}_{-0.09} \log(M_\star/M_\odot)$. Black holes are overmassive by $\sim 10-100\times$ compared to their low-$z$ counterparts in galactic hosts of the same stellar mass. This fact is not due to a selection effect in surveys. Moreover, our analysis predicts the possibility of detecting in high-$z$ JWST surveys $5-15\times$ more black holes with $M_\bullet \lesssim 10^{6.5} M_\odot$, and $10-30\times$ more with $M_\bullet \lesssim 10^{8.5} M_\odot$, compared to local relation's predictions. The lighter black holes preferentially occupy galaxies with a stellar mass of $\sim 10^{7.5}-10^8 M_\odot$. We have yet to detect these sources because (i) they may be inactive (duty cycles $1\%-10\%$), (ii) the host overshines the AGN, or (iii) the AGN is obscured and not immediately recognizable by line diagnostics. A search of low-mass black holes in existing JWST surveys will further test the $M_\bullet-M_\star$ relation. Current JWST fields represent a treasure trove of black hole systems at $z = 4-7$; their detection will provide crucial insights into their early evolution and co-evolution with their galactic hosts.
Adding Value to JWST Spectra and Photometry: Stellar Population and Star Formation Properties of Spectroscopically Confirmed JADES and CEERS Galaxies at $z > 7$
本文分析 43 个 JADES/CEERS 经光谱证认的 $z>7$ JWST 星系，联合 SED 拟合、光谱线、测光与形态信息，揭示其上升的恒星形成历史、测光 EW 偏差及近期星暴贡献。
The Stellar Populations and Rest-Frame Colors of Star-Forming Galaxies at $z \approx 8$: Exploring the Impact of Filter Choice and Star Formation History Assumption with JADES
In this paper we provide predictions for the BH population that would be observable with planned JWST surveys at $5 \le z \le 15$. We base our study on the recently developed Cosmic Archaeology Tool (CAT), which allows us to model BH seeds formation and growth, while being consistent with the general population of AGNs and galaxies observed at $4 \le z \le 7$. We find that JWST planned surveys will provide a complementary view on active BHs at $z > 5$, with JADES-Medium/-Deep being capable of detecting the numerous BHs that populate the faint-end of the distribution, COSMOS-Web sampling a larg…
First results of AMBRA: Abundant Seeds and Early Mergers as a Pathway to the First Massive Black Holes
Carnegie Mellon University（卡内基梅隆大学）；University of Virginia（弗吉尼亚大学）；Virginia Institute for Theoretical Astronomy, University of Virginia（弗吉尼亚大学理论天体物理研究所）；University of Florida（佛罗里达大学）；University of California, Riverside（加州大学河滨分校）；Harvard-Smithsonian Center for Astrophysics（哈佛-史密森尼天体物理中心）
We present a mock image catalogue of ~100,000 MUV=-22.5 to -19.6 mag galaxies at z=7-12 from the BlueTides cosmological simulation. We create mock images of each galaxy with the James Webb (JWST), Hubble, Roman, and Euclid Space Telescopes, as well as Subaru, and VISTA, with a range of near- and mid-infrared filters. We perform photometry on the mock images to estimate the success of these instruments for detecting high-z galaxies. We predict that JWST will have unprecedented power in detecting high-z galaxies, with a 95% completeness limit at least 2.5 magnitudes fainter than VISTA and Subaru…
A Galaxy with an Extremely Blue UV Slope $β=-3$ at $z=9.25$ Identified by JWST Spectroscopy: Evidence for a Weak Nebular Continuum and Efficient Ionizing Photon Escape?
Probing the Cosmic Reionization History with JWST: Gunn-Peterson and Ly$α$ Damping Wing Absorption at $4.5 < z < 13$
The University of Tokyo（东京大学）；National Astronomical Observatory of Japan（日本国立天文台）；Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo（东京大学宇宙物理数学研究所（WPI））
Pushing JWST to the extremes: search and scrutiny of bright galaxy candidates at z$\simeq$15-30
INAF（意大利国家天体物理研究所）；Sapienza, Università di Roma（罗马第一大学）；Centro de Astrobiología (CAB), CSIC–INTA（西班牙国家航空航天技术研究所与西班牙高等科学研究中心联合天文生物学家中心）；University of Massachusetts（马萨诸塞大学）；NSF’s NOIRLab（美国国家科学基金会地下光学红外天文实验室）；The University of Texas at Austin（德克萨斯大学奥斯汀分校）；University of California, Los Angeles（加州大学洛杉矶分校）
The AGN nature of strong CIII emitters in the Early Universe with JWST
INAF – Osservatorio Astronomico di Roma（意大利国家天体物理研究所罗马天文台）；Dipartimento di Fisica, Università di Roma Sapienza（罗马第一大学物理系）；Physics Department, Tor Vergata University of Rome（罗马托尔维加塔大学物理系）；Institute of Physics, Laboratory for Galaxy Evolution and Spectral Modelling, EPFL（洛桑联邦理工学院星系演化与光谱建模实验室物理研究所）；University of the Pacific（太平洋大学）；Instituto de Astrofísica de Andalucía (IAA-CSIC)（安达卢西亚天体物理研究所）；Department of Physics and Astronomy, University of Kansas（堪萨斯大学物理与天文学系）；Department of Astronomy and Astrophysics, The Pennsylvania（宾夕法尼亚大学天文学与天体物理学系）
Probing the Star Formation Main Sequence down to 10$^{7} M_\odot$ at $1 < z < 9$
Saint Mary’s University（圣玛丽大学）；Columbia University（哥伦比亚大学）；Space Telescope Science Institute（太空望远镜科学研究所）；National Research Council of Canada, Herzberg Astronomy & Astrophysics Research Centre（加拿大国家研究委员会赫茨伯格天文学与天体物理学研究中心）；University of California Davis（加州大学戴维斯分校）；University of Groningen（格罗宁根大学）；York University（约克大学）
本研究通过结合多源数据，探测1 < z < 9范围内10^7 M_太阳的恒星形成主序列，揭示了不同质量范围内的恒星形成历史及演化特征。
EPOCHS Paper II: The Ultraviolet Luminosity Function from $7.5<z<13.5$ using 180 square arcminutes of deep, blank-fields from the PEARLS Survey and Public JWST data
JWST Measurements of Neutral Hydrogen Fractions and Ionized Bubble Sizes at $z=7-12$ Obtained with Ly$α$ Damping Wing Absorptions in 27 Bright Continuum Galaxies
