The search for dual supermassive black holes (SMBHs) is of immense interest in modern astrophysics. Galaxy mergers may fuel and produce SMBH pairs. Actively accreting SMBH pairs are observed as a dual quasar, which are vital probes of SMBH growth. Dual quasars at cosmic noon are not well characterized. Gaia observations have enabled a novel technique to identify dual quasars at kpc scales, based on the small jitters of the light centroid as the two quasars vary stochastically. We present the first detailed study of a z=2.17, 0.46'', 3.8 kpc separation dual quasar, J0749+2255, using JWST/NIRSpec integral field unit spectroscopy. Identified by Gaia, J0749+2255 is one of the most distant, small separation dual quasars known. We detect the faint ionized gas of the host galaxy, traced by the narrow Ha emission. Line ratios indicate ionization from the two quasars and from intense star formation. Spectral analysis of the two quasars suggests that they have similar black hole properties, hinting at the possible synchronized accretion activity or lensed quasar images. Surprisingly, the ionized gas kinematics suggest a rotating disk rather than a disturbed system expected in a major gas-rich galaxy merger. Numerical simulations show that this is a plausible outcome of a major gas-rich galaxy merger several tens of Myr before coalescence. Whether J0749+2255 reflects an interesting phase of dual quasar evolution or is a lensed quasar remains unclear. Thus, this study underscores the challenges in definitively distinguishing between a dual and lensed quasars, with observations supporting either scenario.
Varstrometry for Off-nucleus and Dual Subkiloparsec AGN (VODKA): Three Quadruply Lensed Quasars at Cosmic Noon in HST and JWST
Johns Hopkins University（约翰斯·霍普金斯大学）；University of Illinois at Urbana-Champaign（伊利诺伊大学厄巴纳-香槟分校）；Wuhan University（武汉大学）；Institute for Advanced Study（普林斯顿高等研究院）；Massachusetts Institute of Technology（麻省理工学院）
Varstrometry for Off-nucleus and Dual sub-Kpc AGN (VODKA): Radio Classification of High-Redshift Dual AGN Candidates with the Very Large Array
University of Illinois at Urbana-Champaign（伊利诺伊大学厄巴纳-香槟分校）；National Center for Supercomputing Applications, University of Illinois at Urbana-Champaign（国家超级计算应用中心，伊利诺伊大学厄巴纳-香槟分校）；Johns Hopkins University（约翰斯·霍普金斯大学）
We present the first results of the KMOS Lens-Amplified Spectroscopic Survey (KLASS), a new ESO Very Large Telescope (VLT) large program, doing multi-object integral field spectroscopy of galaxies gravitationally lensed behind seven galaxy clusters selected from the HST Grism Lens-Amplified Survey from Space (GLASS). Using the power of the cluster magnification we are able to reveal the kinematic structure of 25 galaxies at $0.7 \lesssim z \lesssim 2.3$, in four cluster fields, with stellar masses $8 \lesssim \log{(M_\star/M_\odot)} \lesssim 11$. This sample includes 5 sources at $z>1$ with lo…
SUNRISE-3D: Sharp UNveiling of AGN feedback Regulation and its Impact on Star-formation at the cosmic noon Epoch
INAF – Istituto di Astrofisica Spaziale e Fisica Cosmica Milano（意大利国家天体物理研究所空间天体物理与宇宙学米兰研究所）；INAF - Osservatorio Astronomico di Roma（意大利国家天体物理研究所罗马天文台）；Department of Mathematics and Physics, Roma Tre University（罗马第三大学数学与物理系）
PAHSPECS: JWST/MIRI Spectroscopy of PAHs at Cosmic Noon
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/西班牙国家研究委员会）；Institute of Astrophysics, Foundation for Research and Technology–Hellas (FORTH)（希腊研究与技术基金会天体物理研究所）；Leiden Observatory, Leiden University（莱顿大学莱顿天文台）；Department of Astronomy & Astrophysics, University of California San Diego（加州大学圣地亚哥分校天文与天体物理系）；Instituto de Estudios Astrofícos, Facultad de Ingeniería y Ciencias, Universidad Diego Portales（迭戈帕托莱斯大学工程与科学学院天体物理研究所）；Millenium Nucleus for Galaxies (MINGAL)（星系千年核心（MINGAL））；INAF Osservatorio di Astrofisica e Scienza dello Spazio di Bologna（博洛尼亚空间天体物理学与科学国家研究院）
Blowing Star Formation Away in AGN Hosts (BAH) -- III. Serendipitous discovery of a $z\sim2.9$ star-forming galaxy lensed by the galactic bulge of CGCG 012-070 using JWST NIRSpec
A SHARP Look at Quenching and Bulge-Disk Growth in Massive Galaxies at Cosmic Noon
INAF - Istituto di Astrofisica Spaziale e Fisica Cosmica, Milano（意大利国家天体物理研究所空间天体物理学与宇宙学天文台，米兰）；INAF - Osservatorio Astronomico di Paodva（意大利国家天体物理研究所帕多瓦天文台）；Université Paris-Saclay, Université Paris Cité, CEA, CNRS, AIM（巴黎萨克雷大学、巴黎西岱大学、法国原子能和替代能源委员会、法国国家科学研究中心、天体物理学信息与方法实验室）；CEA Saclay, DFR/IRFU, Service d’Astrophysique（法国原子能和替代能源委员会萨克雷中心核研究与物理研究所天体物理服务部）；INAF - Osservatorio Astronomico di Arcetri（意大利国家天体物理研究所阿切特里天文台）；INAF - Osservatorio Astronomico di Brera（意大利国家天体物理研究所布雷拉天文台）；Department of Physics, Oxford University（牛津大学物理系）
JWST Reveals a Candidate Jellyfish Galaxy at z=1.156
University of Waterloo（滑铁卢大学）；Waterloo Centre for Astrophysics, University of Waterloo（滑铁卢大学天体物理中心）；York University（约克大学）；Perimeter Institute for Theoretical Physics（基础物理研究所）；École Polytechnique Fédérale de Lausanne (EPFL)（洛桑联邦理工学院）
Resolving stellar populations, star formation, and interstellar medium conditions with JWST in a large spiral galaxy at $z\approx2$
Max-Planck-Institut für extraterrestrische Physik (MPE)（马克斯·普朗克地外物理学研究所）；Scuola Normale Superiore（比萨高等师范学院）；Department of Physics and Astronomy “Augusto Righi”, University of Bologna（博洛尼亚大学物理与天文学“奥古斯托·里吉”系）；INAF – Astrophysics and Space Science Observatory of Bologna（意大利国家天体物理研究所博洛尼亚天文台）；Max-Planck-Institut für Astrophysik (MPA)（马克斯·普朗克天体物理研究所）；Department of Astronomy, University of Geneva（日内瓦大学天文学系）；Cosmic Dawn Center (DAWN), Niels Bohr Institute, University of Copenhagen（哥本哈根大学尼尔斯·玻尔学院宇宙黎明中心）
GA-NIFS: Powerful and frequent outflows in moderate-luminosity active galactic nuclei at $z\sim3-6$
Scuola Normale Superiore（高等师范学院）；INAF – Osservatorio Astrofisico di Arcetri（意大利国家天体物理研究所阿切特里天文台）；Institut de Radioastronomie Millimétrique (IRAM)（毫米波射电天文研究所）；European Space Agency（欧洲空间局）；Centro de Astrobiología (CAB), CSIC-INTA（西班牙国家航空航天技术研究院与最高科学研究理事会天文生物学中心）；Department of Physics, University of Oxford（牛津大学物理系）；Sorbonne Université, CNRS, UMR 7095, Institut d’Astrophysique de Paris（索邦大学、法国国家科学研究中心巴黎天体物理研究所）；Kavli Institute for Cosmology, University of Cambridge（剑桥大学卡弗里宇宙学研究所）
