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Two Distinct Classes of Quiescent Galaxies at Cosmic Noon Revealed by JWST PRIMER and UNCOVER
Sam E. Cutler, Katherine E. Whitaker, John R. Weaver +31
We present a measurement of the low-mass quiescent size-mass relation at Cosmic Noon (1<z<3) from the JWST PRIMER and UNCOVER treasury surveys, which highlights two distinct classe…
JWST UNCOVER: The Overabundance of Ultraviolet-luminous Galaxies at
Iryna Chemerynska, Hakim Atek, Lukas J. Furtak +20
Over the past year, JWST has uncovered galaxies at record-breaking distances up to . The JWST UNCOVER (ultra-deep NIRSpec and NIRcam observations before the epoch of rei…
A high incidence of dusty H emitters at among UltraVISTA dropout galaxies in COSMOS revealed by JWST
Sophie E. van Mierlo, Karina I. Caputi, Matthew L. N. Ashby +3
We have characterized 26 Spitzer/IRAC-selected sources from the SMUVS program that are undetected in the UltraVISTA DR5 H- and/or Ks-band images, covering 94 square arcmin of the C…
JWST and ALMA discern the assembly of structural and obscured components in a high-redshift starburst galaxy
Zhaoxuan Liu, John D. Silverman, Emanuele Daddi +27
We present observations and analysis of the starburst, PACS-819, at z=1.45 ( M), using high-resolution (; 0.8 kpc) ALMA and multi-wav…
Cosmic Vine: A z=3.44 large-scale structure hosting massive quiescent galaxies
Shuowen Jin, Nikolaj B. Sillassen, Georgios E. Magdis +15
We report the discovery of a large-scale structure at z=3.44 revealed by JWST data in the Extended Groth Strip (EGS) field. This structure, called the Cosmic Vine, consists of 20 g…
MAGNIF: A Tentative Lensed Rotating Disk at detected by JWST NIRCam WFSS with Dynamical Forward Modeling
Zihao Li, Zheng Cai, Fengwu Sun +39
We report galaxy MACS0416-Y3 behind the lensing cluster MACSJ0416.1--2403 as a tentative rotating disk at detected through its [OIII] emission in JWST NIRCam…
The Farmer: A reproducible profile-fitting photometry package for deep galaxy surveys
J. R. Weaver, L. Zalesky, V. Kokorev +17
While space-borne optical and near-infrared facilities have succeeded in delivering a precise and spatially resolved picture of our Universe, their small survey area is known to un…
Quantifying the Effects of Known Unknowns on Inferred High-redshift Galaxy Properties: Burstiness, the IMF, and Nebular Physics
Bingjie Wang, Joel Leja, Hakim Atek +15
The era of the James Webb Space Telescope ushers stellar population models into uncharted territories, particularly at the high-redshift frontier. In a companion paper, we apply th…
UNCOVER: The rest ultraviolet to near infrared multiwavelength structures and dust distributions of sub-millimeter-detected galaxies in Abell 2744
Sedona H. Price, Katherine A. Suess, Christina C. Williams +18
With the wavelength coverage, sensitivity, and high spatial resolution of JWST, it is now possible to peer through the dust attenuation to probe the rest-frame near infrared (NIR)…
ALMA Lensing Cluster Survey: average dust, gas, and star formation properties of cluster and field galaxies from stacking analysis
Andrea Guerrero, Neil Nagar, Kotaro Kohno +18
We develop new tools for continuum and spectral stacking of ALMA data, and apply these to the ALMA Lensing Cluster Survey (ALCS). We derive average dust masses, gas masses and star…
Reaching for the stars -- JWST/NIRSpec spectroscopy of a lensed star candidate at
Lukas J. Furtak, Ashish K. Meena, Erik Zackrisson +31
We present JWST/NIRSpec observations of a highly magnified star candidate at a photometric redshift of , previously detected in JWST/NIRCam imaging of t…
UNCOVER: The growth of the first massive black holes from JWST/NIRSpec -- spectroscopic redshift confirmation of an X-ray luminous AGN at z=10.1
Andy D. Goulding, Jenny E. Greene, David J. Setton +27
The James Webb Space Telescope is now detecting early black holes (BHs) as they transition from "seeds" to supermassive BHs. Recently Bogdan et al. (2023) reported the detection of…
The Web Epoch of Reionization Lyman- Survey (WERLS) I. MOSFIRE Spectroscopy of Lyman- Emitters
Olivia R. Cooper, Caitlin M. Casey, Hollis B. Akins +33
We present the first results from the Web Epoch of Reionization Lyman- Survey (WERLS), a spectroscopic survey of Lyman- emission using Keck I/MOSFIRE and LRIS. WERLS targets…
UNCOVER spectroscopy confirms a surprising ubiquity of AGN in red galaxies at
Jenny E. Greene, Ivo Labbe, Andy D. Goulding +31
JWST is revealing a new population of dust-reddened broad-line active galactic nuclei (AGN) at redshifts . Here we present deep NIRSpec/Prism spectroscopy from the Cycle…
DUALZ: Deep UNCOVER-ALMA Legacy High-Z Survey
Seiji Fujimoto, Rachel Bezanson, Ivo Labbe +29
We present the survey design and initial results of the ALMA Cycle 9 program of DUALZ, which aims to establish a joint ALMA and JWST public legacy field targeting the massive galax…
COSMOS-Web: Intrinsically Luminous z10 Galaxy Candidates Test Early Stellar Mass Assembly
Caitlin M. Casey, Hollis B. Akins, Marko Shuntov +39
We report the discovery of 15 exceptionally luminous candidate galaxies discovered in the first 0.28 deg of JWST/NIRCam imaging from the COSMOS-Web Sur…
Uncovering a Massive z~7.7 Galaxy Hosting a Heavily Obscured Radio-Loud QSO Candidate in COSMOS-Web
Erini Lambrides, Marco Chiaberge, Arianna Long +47
In this letter, we report the discovery of the highest redshift, heavily obscured, radio-loud AGN candidate selected using JWST NIRCam/MIRI, mid-IR, sub-mm, and radio imaging in th…
UNCOVER: JWST Spectroscopy of Three Cold Brown Dwarfs at Kiloparsec-scale Distances
Adam J. Burgasser, Rachel Bezanson, Ivo Labbe +19
We report JWST/NIRSpec spectra of three distant T-type brown dwarfs identified in the Ultradeep NIRSpec and NIRCam ObserVations before the Epoch of Reionization (UNCOVER) survey of…
UNCOVER: A NIRSpec Identification of a Broad Line AGN at z = 8.50
Vasily Kokorev, Seiji Fujimoto, Ivo Labbe +29
Deep observations with JWST have revealed an emerging population of red point-like sources that could provide a link between the postulated supermassive black hole seeds and observ…
UNCOVER: A NIRSpec Census of Lensed Galaxies at z=8.50-13.08 Probing a High AGN Fraction and Ionized Bubbles in the Shadow
Seiji Fujimoto, Bingjie Wang, John Weaver +33
We present JWST NIRSpec prism spectroscopy of gravitationally lensed galaxies at found behind the massive galaxy cluster Abell 2744 in the UNCOVER Cycle 1 Treasury Prog…
Most of the photons that reionized the Universe came from dwarf galaxies
Hakim Atek, Ivo Labbé, Lukas J. Furtak +30
The identification of sources driving cosmic reionization, a major phase transition from neutral Hydrogen to ionized plasma around 600-800 Myr after the Big Bang (Dayal et al. 2018…
A high black hole to host mass ratio in a lensed AGN in the early Universe
Lukas J. Furtak, Ivo Labbé, Adi Zitrin +34
Early JWST observations have uncovered a new population of red sources that might represent a previously overlooked phase of supermassive black hole growth (Kocevski et al. 2023; M…
UNCOVER: Illuminating the Early Universe -- JWST/NIRSpec Confirmation of Galaxies
Bingjie Wang, Seiji Fujimoto, Ivo Labbe +24
Observations of high-redshift galaxies provide a critical direct test to the theories of early galaxy formation, yet to date, only three have been spectroscopically confirmed at $z…
Unveiling the distant Universe: Characterizing Galaxies in the first epoch of COSMOS-Web
Maximilien Franco, Hollis B. Akins, Caitlin M. Casey +47
We report the identification of 15 galaxy candidates at using the initial COSMOS-Web JWST observations over 77 arcmin through four NIRCam filters (F115W, F150W, F277W,…