A Massive Protocluster Anchored by a Luminous Quasar at $z=6.63$
Feige Wang, Jinyi Yang, Joseph F. Hennawi, Xiaohui Fan, Minghao Yue, Eduardo Bañados, Shane Bechtel, Fuyan Bian, Sarah Bosman, Jaclyn B. Champagne, Frederick B.… 展开作者
Feige Wang, Jinyi Yang, Joseph F. Hennawi, Xiaohui Fan, Minghao Yue, Eduardo Bañados, Shane Bechtel, Fuyan Bian, Sarah Bosman, Jaclyn B. Champagne, Frederick B. Davies, Roberto Decarli, Emanuele Paolo Farina, Chiara Mazzucchelli, Bram Venemans, Fabian Walter
Protoclusters, the progenitors of galaxy clusters, trace large scale structures in the early Universe and are important to our understanding of structure formation and galaxy evolution. To date, only a handful of protoclusters have been identified in the Epoch of Reionization (EoR). As one of the rarest populations in the early Universe, distant quasars that host active supermassive black holes are thought to reside in the most massive dark matter halos at that cosmic epoch, and could thus potentially pinpoint some of the earliest protoclusters. In this letter, we report the discovery of a massive protocluster around a luminous quasar at $z=6.63$. This protocluster is anchored by the quasar, and includes three [CII] emitters at $z\sim6.63$, 12 spectroscopically confirmed Ly$α$ emitters (LAEs) at $6.54<z\le6.64$, and a large number of narrow-band imaging selected LAE candidates at the same redshift. This structure has an overall overdensity of $δ=3.3^{+1.1}_{-0.9}$ within $\sim35\times74$ cMpc$^2$ on the sky and an extreme overdensity of $δ>30$ in its central region (i.e., $R\lesssim2$ cMpc). We estimate that this protocluster will collapse into a galaxy cluster with a mass of $6.9^{+1.2}_{-1.4}\times10^{15}~M_\odot$ at the current epoch, more massive than the most massive clusters known in the local Universe such as Coma. In the quasar vicinity, we discover a double-peaked LAE which implies that the quasar has a UV lifetime greater than 0.8 Myrs and has already ionized its surrounding intergalactic medium.
Deep X-ray View of a Distant Protocluster Anchored by a Quasar at $z=6.63$: No Evidence for Enhanced X-ray AGN Activity
Peking University（北京大学）；Kavli Institute for Astronomy and Astrophysics, Peking University（北京大学科维理天文与天体物理研究所）；Nanjing University（南京大学）；University of Michigan（密歇根大学）
INAF - Astronomical Observatory of Trieste（意大利国家天体物理研究所的里雅斯特天文台）；IFPU - Institute for Fundamental Physics of the Universe（宇宙基础物理研究所）；INAF - Osservatorio di Astrofisica e Scienza dello Spazio di Bologna（意大利国家天体物理研究所博洛尼亚天体物理学与空间科学观测站）；Tianjin Astrophysics Center, Tianjin Normal University（天津师范大学天津天体物理中心）；EPFL - Institute for Physics, Laboratory for Galaxy Evolution（洛桑联邦理工学院物理学院星系演化实验室）
The ALMA Survey of Star Formation and Evolution in Massive Protoclusters with Blue Profiles (ASSEMBLE): Core Growth, Cluster Contraction, and Primordial Mass Segregation
An Overabundance of Radio-AGN in the SPT2349-56 Protocluster: Preheating the Intra-Cluster Medium
Dalhousie University（达尔豪斯大学）；University of British Columbia（不列颠哥伦比亚大学）；University of the Witwatersrand（威特沃特斯兰德大学）；University of Pretoria（比勒陀利亚大学）；University of Chicago（芝加哥大学）；Kavli Institute for Cosmological Physics, University of Chicago（芝加哥大学卡弗里宇宙物理学研究所）；University of Victoria（维多利亚大学）；University of Florida（佛罗里达大学）；University of California, Los Angeles（加州大学洛杉矶分校）；University of Illinois（伊利诺伊大学）；National Center for Supercomputing Applications（国家超级计算应用中心）
A cosmic collision in the making: JWST/NIRISS reveals a merging and maturing protocluster core at z~3 around a red quasar
Zentrum für Astronomie der Universität Heidelberg, Astronomisches Rechen-Institut（海德堡大学天文学中心，天文计算研究所）；Space Telescope Science Institute（太空望远镜科学研究所）；Max-Planck-Institut für Astronomie（马克斯·普朗克天文学研究所）；Department of Physics, Rhodes College（罗德学院物理系）；Department of Physics and Astronomy, Bloomberg Center, Johns Hopkins University（约翰斯·霍普金斯大学彭博中心物理与天文学系）；Institute for Advanced Study（高等研究院）；Department of Astronomy and Joint Space-Science Institute, University of Maryland, College Park（马里兰大学帕克分校天文学系及联合空间科学研究所）；Departamento de Astronomia, Instituto de Física, Universidade Federal do Rio Grande do Sul（南里奥格兰德联邦大学物理研究所天文学系）
ASPIRE: The Environments and Dark Matter Halos of Luminous Quasars in the Epoch of Reionization
University of Michigan（密歇根大学）；Steward Observatory, University of Arizona（亚利桑那大学斯图尔德天文台）；Space Telescope Science Institute（太空望远镜科学研究所）；University of California, Santa Barbara（加州大学圣塔芭芭拉分校）；Leiden Observatory, Leiden University（莱顿大学莱顿天文台）；Newcastle University（纽卡斯尔大学）；INAF–Osservatorio di Astrofisica e Scienza dello Spazio（意大利国家天体物理研究所空间科学与天体物理观测站）；Department of Astronomy, University of Geneva（日内瓦大学天文学系）
GA-NIFS: AGN activity in a Lyα emitter within a triple-AGN system anchored by a passive galaxy at z=3
Centro de Astrobiología (CAB), CSIC–INTA（天体生物学中心（CAB），西班牙国家航空航天技术研究所与西班牙国家科学研究委员会联合）；Kavli Institute for Cosmology, University of Cambridge（剑桥大学卡弗里宇宙学研究所）；Cavendish Laboratory - Astrophysics Group, University of Cambridge（剑桥大学卡文迪许实验室天体物理组）；Department of Physics, University of Oxford（牛津大学物理系）；Scuola Normale Superiore（比萨高等师范学院）；Sorbonne Université, CNRS, UMR 7095, Institut d’Astrophysique de Paris（索邦大学，法国国家科学研究中心，UMR 7095，巴黎天体物理研究所）；Department of Physics and Astronomy, University College London（伦敦大学学院物理与天文系）
Euclid preparation. Far-infrared predictions for Euclid galaxy catalogues: cluster, protocluster, and field
Imperial College London（帝国理工学院）；INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna（博洛尼亚天文物理与空间科学国家研究所）；Instituto de Astrofísica de Canarias（加那利天体物理研究所）；Universidad de La Laguna（拉古纳大学）；The Open University（开放大学）；SRON Netherlands Institute for Space Research（荷兰空间研究研究所）；University of Groningen（格罗宁根大学）；University of British Columbia（不列颠哥伦比亚大学）
