Massive galaxy formation caught in action at z~5 with JWST
Shuowen Jin, Nikolaj B. Sillassen, Georgios E. Magdis, Aswin P. Vijayan, Gabriel B. Brammer, Vasily Kokorev, John R. Weaver, Raphael Gobat, Clara Giménez-Arteag… 展开作者
Shuowen Jin, Nikolaj B. Sillassen, Georgios E. Magdis, Aswin P. Vijayan, Gabriel B. Brammer, Vasily Kokorev, John R. Weaver, Raphael Gobat, Clara Giménez-Arteaga, Francesco Valentino, Malte Brinch, Carlos Gómez-Guijarro, Marko Shuntov, Sune Toft, Thomas R. Greve, David Blanquez Sese
We report the discovery of a compact group of galaxies, CGG-z5, at z~5.2 in the EGS field covered by the JWST/CEERS survey. CGG-z5 was selected as the highest overdensity of galaxies at z>2 in recent JWST public surveys and it consists of six candidate members lying within a projected area of $1.5"\times3"$ (10$\times$20~kpc$^2$). All group members are HST/F435W and HST/F606W dropouts while securely detected in the JWST/NIRCam bands, yielding a narrow range of robust photometric redshifts $5.0<z<5.3$. The most massive galaxy in the group has a stellar mass log$(M_{*}/M_{\odot})\approx9.8$, while the rest are low-mass satellites (log$(M_{*}/M_{\odot})\approx8.4-9.2$). While several group members were already detected in the HST and IRAC bands, the low stellar masses and the compactness of the structure required the sensitivity and resolution of JWST for its identification. To assess the nature and evolutionary path of CGG-z5, we searched for similar compact structures in the \textsc{Eagle} simulations and followed their evolution with time. We find that all the identified structures merge into a single galaxy by z=3 and form a massive galaxy (log$(M_{*}/M_{\odot})>11$) at z~1. This implies that CGG-z5 could be a "proto-massive galaxy" captured during a short-lived phase of massive galaxy formation.
Caught Napping by JWST UNCOVER+MegaScience: Constraining bursty star formation histories and number densities of mini-quenched galaxies at redshifts 4-7
University of Washington（华盛顿大学）；University of Pittsburgh（匹兹堡大学）；University of Colorado, Boulder（科罗拉多大学博尔德分校）；University of California, Santa Cruz（加州大学圣克鲁兹分校）；Princeton University（普林斯顿大学）
Investigating cosmic strings using large-volume hydrodynamical simulations in the context of JWST's massive UV-bright galaxies
Goethe University（歌德大学）；Massachusetts Institute of Technology（麻省理工学院）；Center for Astrophysics | Harvard & Smithsonian（天体物理中心 | 哈佛与史密森尼学会）；McGill University（麦吉尔大学）；Institute for Basic Science（基础科学研究院）；York University（约克大学）
Ram-pressure stripping caught in action in a young cluster at $z = 2.51$
Nanjing University（南京大学）；Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University（南京大学现代天文与天体物理重点实验室）；Université Paris-Saclay（巴黎萨克雷大学）；Université Paris Cité（巴黎西岱大学）；CEA（法国原子能和替代能源委员会）；CNRS（法国国家科学研究中心）；AIM（宇宙学、物质与星际介质研究所）；Pontificia Universidad Católica de Valparaíso（智利天主教瓦帕拉索大学）；Istituto Nazionale di Astrofisica (INAF)（意大利国家天体物理研究所）；Purple Mountain Observatory, Chinese Academy of Sciences（中国科学院紫金山天文台）
A Promise for the JWST era: Massive black holes directly collapsed from wave dark matter haloes, and Star formation in and around their accretion flows
Caught in Swallowtails: Discovery of Two Swallowtail Image Formations in MS 0451.6-0305
Indian Institute of Science（印度科学学院）；Oklahoma State University（俄克拉荷马州立大学）；The University of Texas at Austin（德克萨斯大学奥斯汀分校）；Cosmic Frontier Center, The University of Texas at Austin（德克萨斯大学奥斯汀分校宇宙前沿中心）；Univ Lyon, Univ Lyon1, Ens de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon UMR5574（里昂大学、里昂第一大学、巴黎高等师范学校里昂分校、法国国家科学研究中心、里昂天体物理研究中心）；Ben-Gurion University of the Negev（内盖夫本-古里安大学）；University of Hertfordshire（赫特福德大学）；Durham University（杜伦大学）；University of KwaZulu-Natal（夸祖鲁-纳塔尔大学）；University of Minnesota（明尼苏达大学）；Arizona State University（亚利桑那州立大学）
All the Massive Galaxy Overdensities during Reionization: JWST Rest-Frame Optical Selection Reveals Young, Chemically Evolved Galaxies Embedded in Dense, Neutral Gas at z > 5
Cosmic Dawn Center (DAWN)（宇宙黎明中心）；Niels Bohr Institute, University of Copenhagen（哥本哈根大学尼尔斯·玻尔研究所）；DTU Space, Technical University of Denmark（丹麦技术大学空间科学中心）；Institute of Science and Technology Austria (ISTA)（奥地利科学技术研究院）；MIT Kavli Institute for Astrophysics and Space Research（麻省理工学院卡弗里天体物理与空间研究所）；Department of Astronomy, University of Geneva（日内瓦大学天文系）；National Astronomical Observatory of Japan（日本国立天文台）；INAF/Osservatorio Astronomico di Roma（意大利国家天体物理研究所罗马天文台）
A Compact Proto-group at $z \sim 5$: A Massive Galaxy Caught in Formation
National Astronomical Observatory of Japan（日本国立天文台）；The Graduate University for Advanced Studies（高级研究院）；Astronomical Institute, Tohoku University（东北大学天文学研究所）；Center for Frontier Science, Chiba University（千叶大学前沿科学中心）；Graduate School of Arts and Sciences, The University of Tokyo（东京大学大学院综合文化研究科）；Department of Astronomy & Astrophysics, The Pennsylvania State University（宾夕法尼亚州立大学天文学与天体物理学系）；Department of Astronomy, Tsinghua University（清华大学天文系）
Massive star clusters detected by JWST as natural birth places to form intermediate-mass black holes
Sapienza Università di Roma（罗马第一大学）；Nicolaus Copernicus Astronomical Centre, Polish Academy of Sciences（波兰科学院尼古拉·哥白尼天文学中心）；Astronomisches Rechen-Institut, Zentrum für Astronomie, University of Heidelberg（海德堡大学天体物理计算研究所）；Department of Physics, New York University Abu Dhabi（阿布扎比纽约大学物理系）；Center for Astrophysics and Space Science (CASS), New York University Abu Dhabi（阿布扎比纽约大学天体物理学与空间科学中心）；Hamburg Observatory, Hamburg University（汉堡大学汉堡天文台）；Departamento de Astronomía, Universidad de Chile（智利大学天文学系）；Physics Department, College of Science, United Arab Emirates University（阿联酋大学理学院物理系）
Resolved Maps of Gas and Dust in a Massive Quiescent Galaxy at z=2 from INQUEST-JWST: Evidence of Accretion and Rejuvenation
Observatories of the Carnegie Institution for Science（卡内基科学研究所天文台）；Department of Astronomy, Tsinghua University（清华大学天文系）；Dipartimento di Fisica e Astronomia (DIFA), Università di Bologna（博洛尼塔大学物理与天文学系）；Department of Astronomy, University of Massachusetts, Amherst（马萨诸塞大学阿默斯特分校天文系）；Cosmic Dawn Center (DAWN)（宇宙黎明中心）；Centre for Astrophysics and Supercomputing, Swinburne University of Technology（斯威本科技大学天体物理与超级计算中心）
Feeding the Dead: Neutral Gas Inflow in a Long-Quenched Ancient Massive Galaxy at $z\sim 2.7$ Observed with JWST/NIRSpec
Tufts University（塔夫茨大学）；INAF - Osservatorio Astronomico di Brera（意大利国家天体物理研究所布雷拉天文台）；INAF - Osservatorio Astronomico di Capodimonte（意大利国家天体物理研究所卡波迪蒙特天文台）；Dipartimento di Fisica e Astronomia, Universitá di Bologna（博洛尼塔大学物理与天文学系）；Niels Bohr Institute, University of Copenhagen（哥本哈根大学尼尔斯玻尔研究所）；European Space Research and Technology Centre（欧洲空间研究与技术中心）；Universitá degli studi di Milano-Bicocca（米兰比可卡大学）
Caught in the act: interaction-driven evolution in the nearby compact galaxy group Roberts Quartet (SCG0018-4854)
Indian Institute of Astrophysics（印度天体物理研究所）；Department of Physics, Pondicherry University（本地治里大学物理系）；Department of Physics, University of Allahabad（阿拉哈巴德大学物理系）
