UV slopes of Starforming Galaxies in Strong Lensing fields at the Epoch of Reionization with JWST
University of Ljubljana（卢布尔雅那大学）；University of California Davis（加州大学戴维斯分校）；Dunlap Institute for Astronomy and Astrophysics（邓普天文学与天体物理研究所）；York University（约克大学）；Kapteyn Astronomical Institute, University of Groningen（格罗宁根大学卡普坦天文研究所）；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）
Giordano Felicioni, Maruša Bradač, Yoshihisa Asada, Nicholas S. Martis, Ghassan T. E. Sarrouh, Guillaume Desprez, Gregor Rihtaršič, Naadiyah Jagga, Anishya Hars… 展开作者
Giordano Felicioni, Maruša Bradač, Yoshihisa Asada, Nicholas S. Martis, Ghassan T. E. Sarrouh, Guillaume Desprez, Gregor Rihtaršič, Naadiyah Jagga, Anishya Harshan, Jon Judež, Chris J. Willott, Roberto Abraham, Gabriel Brammer, Vince Estrada-Carpenter, Jasleen Matharu, Adam Muzzin, Gaël Noirot, Marcin Sawicki, Sunna Withers, Vladan Markov, Rosa M. Mérida, Vesna Pirc Jevšenak, Roberta Tripodi
UV slopes ($β$) are a powerful diagnostics for galaxies at the Epoch of Reionization, tracing star formation, ISM ionization, and the escape fraction $f_{esc}$ of ionizing photons. Studies at low and intermediate z find a gradual $β$ reddening with time and steeper slopes for fainter galaxies, however recent JWST studies reveal a flattening of this trend at $z>7$. We want measure $β$ for galaxies at $z>7.5$ using the strong lensing around massive galaxy clusters to observe high-redshift and faint galaxies. The low-brightness regime is of particular interest for reionization, as most of the recent models of this process posit that numerous faint galaxies are the prime drivers of reionization. We use NIRCam and NIRSpec data from CANUCS, Technicolor, JUMPS, Silver Bullet, UNCOVER and MEGASCIENCE across 7 strong lensing fields. We find galaxies down to $M_{UV}\sim-16$ and 7.5<z<12.5. We measure \b{eta} with a forward-modelling procedure and estimate $f_{esc}$ for a subsample with emission line data using a relation, calibrated from a low-z sample, with UV slope, galaxy size and H$β$ equivalent width. We find 378 galaxies (45 with spectrum), yielding average values $β=-2.3\pm0.4$, $z=8.5\pm1.0$, and $M_{UV}=-18\pm1$. We find no significant $β$ evolution across our redshift range, suggesting a flattening of the $β-z$ trend above $z\sim7.5$. We find a weak negative trend between $β$ and $M_{UV}$. For 14 galaxies we estimate an average $f_{esc}=0.26\pm0.22$. The flat trend of $β$ at $z>7.5$ suggests similar properties between $300$ and $600 Myr$ after the Big Bang. The weak trend between $β$ and $M_{UV}$ suggests an analogous composition for low- and high-mass galaxies' ISM, likely due to a lack of time for dust buildup. While average $f_{esc}$ is higher than necessary to ionize the IGM by z~6, the model extrapolated at low-z may overestimate its value.
Breaking Through the Cosmic Fog: JWST/NIRSpec Constraints on Ionizing Photon Escape in Reionization-Era Galaxies
University of Geneva（日内瓦大学）；Niels Bohr Institute, University of Copenhagen（哥本哈根大学尼尔斯·玻尔研究所）；Cosmic Dawn Center (DAWN)（宇宙黎明中心（DAWN））；Max Planck Institut für Astrophysik（马克斯·普朗克天体物理研究所）；Max-Planck-Institut für Astronomie（马克斯·普朗克天文学研究所）；The University of Texas at Austin（德克萨斯大学奥斯汀分校）
Towards Reconciling Reionization with JWST: The Role of Bright Galaxies and Strong Feedback
University of Maryland, College Park（马里兰大学帕克分校）；Space Telescope Science Institute（太空望远镜科学研究所）；University of Zurich（苏黎世大学）；University of Edinburgh（爱丁堡大学）；University of the Western Cape（西开普大学）；New Mexico State University（新墨西哥州立大学）；University of Copenhagen（哥本哈根大学）；Technical University of Denmark（丹麦技术大学）
Reionization driven by the few: the ionizing budget of galaxies at z=5-10 from JWST/NIRSpec
University of Geneva（日内瓦大学）；Niels Bohr Institute, University of Copenhagen（哥本哈根大学尼尔斯·玻尔研究所）；Department of Astronomy, The University of Texas at Austin（德克萨斯大学奥斯汀分校天文学系）；Universidad de Chile（智利大学）
A Comprehensive Study on Galaxies at z~9-16 Found in the Early JWST Data: UV Luminosity Functions and Cosmic Star-Formation History at the Pre-Reionization Epoch
Reionization and the ISM/Stellar Origins with JWST and ALMA (RIOJA): The core of the highest redshift galaxy overdensity at $z = 7.88$ confirmed by NIRSpec/JWST
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））
Lyman-$α$ Visibility During the Epoch of Reionization: Combining JWST FRESCO Grism Data with Keck Archival Spectroscopy
Anton Pannekoek Institute for Astronomy（安顿·潘内科克天文学研究所）；Institute of High-Energy Physics（高能物理研究所）；University of Amsterdam（阿姆斯特丹大学）；MIT Kavli Institute for Astrophysics and Space Research（麻省理工学院卡弗里天体物理学与空间研究所）；Department of Astronomy, University of Geneva（日内瓦大学天文学系）；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）；Institute of Science and Technology Austria (ISTA)（奥地利科学与技术研究所）
Direct T_e-based Metallicities of z=2-9 Galaxies with JWST/NIRSpec: Empirical Metallicity Calibrations Applicable from Reionization to Cosmic Noon
University of Kentucky（肯塔基大学）；University of California, Davis（加州大学戴维斯分校）；University of California, Los Angeles（加州大学洛杉矶分校）；University of Arizona（亚利桑那大学）；University of California, Riverside（加州大学河滨分校）；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）
JWST ASPIRE: How Did Galaxies Complete Reionization? Evidence for Excess IGM Transmission around ${\rm [O\,{\scriptstyle III}]}$ Emitters during Reionization
From THESAN-ZOOM to JWST: Predicting ionizing photon escape and the rise of UV-bright reionization sources
University of Cambridge（剑桥大学）；The University of Texas at Dallas（德克萨斯大学达拉斯分校）；York University（约克大学）；The University of Tokyo（东京大学）；Leibniz-Institut für Astrophysik Potsdam（波茨坦阿纳西斯天文台）；Massachusetts Institute of Technology（麻省理工学院）
Resolving dust and Lyα emission in a lensed galaxy at the epoch of reionization with JWST/CANUCS
University of Ljubljana（卢布尔雅那大学）；University of California Davis（加州大学戴维斯分校）；Arizona State University（亚利桑那州立大学）；University of Groningen（格罗宁根大学）；INAF - Osservatorio Astronomico di Roma（意大利国家天体物理研究所罗马天文台）；Saint Mary’s University（圣玛丽大学）；Space Telescope Science Institute（太空望远镜科学研究所）
Deep JWST spectroscopy of galaxies in a candidate ionized bubble at $z = 8.7$: probing reionization at pMpc scales with Ly$α$ emission
University of Cambridge（剑桥大学）；University of Arizona（亚利桑那大学）；Niels Bohr Institute, University of Copenhagen（哥本哈根大学尼尔斯·玻尔研究所）；University of California, Santa Barbara（加州大学圣塔芭芭拉分校）；University of Vienna（维也纳大学）
The $z \gtrsim 9$ galaxy UV luminosity function from the JWST Advanced Deep Extragalactic Survey: insights into early galaxy evolution and reionization
University of Arizona（亚利桑那大学）；University of California, Berkeley（加州大学伯克利分校）；University of California, Santa Cruz（加州大学圣克鲁兹分校）；University of Texas, Austin（德克萨斯大学奥斯汀分校）；University of Copenhagen（哥本哈根大学）；European Space Agency（欧洲空间局）
Lyman-alpha emission at the end of reionization: line strengths and profiles from MMT and JWST observations at z~5-6
Niels Bohr Institute, University of Copenhagen（哥本哈根大学尼尔斯·玻尔研究所）；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）；Departement d’Astronomie, University of Geneva（日内瓦大学天文学系）；Kavli Institute for Cosmology, University of Cambridge（剑桥大学卡弗里宇宙学研究所）；Cavendish Laboratory, University of Cambridge（剑桥大学卡文迪许实验室）
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）
