227 citations · 794 across the 28 of their papers we have counts for
27 papers · 1 filter
Caught Napping by JWST UNCOVER+MegaScience: Constraining bursty star formation histories and number densities of mini-quenched galaxies at redshifts 4-7
Gourav Khullar, Rachel Bezanson, Katherine A. Suess +27
We explore the prevalence of mini-quenched or ``napping'' galaxies selected from spectroscopic and photometric samples in the UNCOVER/MegaScience survey. These galaxies are empiric…
A GLIMPSE of the 99%: a census of the faintest galaxies during the epoch of reionization and its implications for galaxy formation models
Hakim Atek, Iryna Chemerynska, Lukas J. Furtak +19
We present a comprehensive study of the galaxy UV luminosity function (UVLF) at leveraging deep JWST observations from the GLIMPSE survey. Thanks to gravitational lensing,…
A GLIMPSE into the UV Continuum Slopes of the Faintest Galaxies in the Epoch of Reionization
Michelle C. Jecmen, John Chisholm, Hakim Atek +23
As observations have yet to constrain the ionizing properties of the faintest (M > -16) galaxies, their contribution to cosmic reionization remains unclear. The rest-fra…
JWST's GLIMPSE: an overview of the deepest probe of early galaxy formation and cosmic reionization
Hakim Atek, John Chisholm, Vasily Kokorev +44
We present an overview of the JWST GLIMPSE program, highlighting its survey design, primary science goals, gravitational lensing models, and first results. GLIMPSE provides ultra-d…
A GLIMPSE into the very faint-end of the H+[OIII]4960,5008 luminosity function at z=7-9 behind Abell S1063
Damien Korber, Iryna Chemerynska, Lukas J. Furtak +12
We use the ultra-deep GLIMPSE JWST/NIRCam survey to constrain the faint-end of the H+[OIII]4960,5008 luminosity function (LF) down to erg/s at z=7-9 behind the len…
The first GLIMPSE of the faint galaxy population at Cosmic Dawn with JWST: The evolution of the ultraviolet luminosity function across z~9-15
Iryna Chemerynska, Hakim Atek, Lukas J. Furtak +27
Using ultra-deep JWST NIRCam imaging from the GLIMPSE Survey, enhanced by gravitational lensing of the AbellS1063 cluster, we investigate the faintest galaxies ever observed in the…
Exploring Cosmic Dawn with PANORAMIC I: The Bright End of the UVLF at
Andrea Weibel, Pascal A. Oesch, Christina C. Williams +14
In its first two years of operation, the James Webb Space Telescope has enabled the discovery of a surprising number of UV-bright galaxies at . Their number density is…
Investigating photometric and spectroscopic variability in the multiply-imaged Little Red Dot A2744-QSO1
Lukas J. Furtak, Amy R. Secunda, Jenny E. Greene +25
JWST observations have uncovered a new population of red, compact objects at high redshifts dubbed `Little Red Dots' (LRDs), which typically show broad emission lines and are thoug…
GLIMPSE: An ultra-faint 10 Pop III Galaxy Candidate and First Constraints on the Pop III UV Luminosity Function at
Seiji Fujimoto, Rohan P. Naidu, John Chisholm +32
Detecting the first generation of stars, Population III (PopIII), has been a long-standing goal in astrophysics, yet they remain elusive even in the JWST era. Here we present a nov…
An unambiguous AGN and a Balmer break in an Ultraluminous Little Red Dot at z=4.47 from Ultradeep UNCOVER and All the Little Things Spectroscopy
Ivo Labbe, Jenny E. Greene, Jorryt Matthee +37
We present a detailed exploration of the most optically-luminous Little Red Dot (erg/s, erg/s, F444W=22AB) found to date. Located in the Abell 2744 fie…
A Glimpse of the New Redshift Frontier Through Abell S1063
Vasily Kokorev, Hakim Atek, John Chisholm +31
We report the discovery of two galaxy candidates at redshifts between in JWST observations from the GLIMPSE survey. These robust sources were identified using a combi…
The UNCOVER Survey: First Release of Ultradeep JWST/NIRSpec PRISM spectra for ~700 galaxies from z~0.3-13 in Abell 2744
Sedona H. Price, Rachel Bezanson, Ivo Labbe +38
We present the design and observations of low resolution JWST/NIRSpec PRISM spectroscopy from the Ultradeep NIRSpec and NIRCam ObserVations before the Epoch of Reionization (UNCOVE…
The Extreme Low-mass End of the Mass-Metallicity Relation at
Iryna Chemerynska, Hakim Atek, Pratika Dayal +17
The mass-metallicity relation (MZR) provides crucial insights into the baryon cycle in galaxies and provides strong constraints on galaxy formation models. We use \jwst\ NIRSpec ob…
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…
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…
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…
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…
Self-consistent Combined HST, K-band, and Spitzer Photometric Catalogs of the BUFFALO Survey Fields
Amanda Pagul, F. Javier Sánchez, Iary Davidzon +12
This manuscript presents new astronomical source catalogs using data from the BUFFALO Survey. These catalogs contain detailed information for over 100,000 astronomical sources in t…
UNCOVER: Candidate Red Active Galactic Nuclei at 3<z<7 with JWST and ALMA
Ivo Labbe, Jenny E. Greene, Rachel Bezanson +28
The James Webb Space Telescope (JWST) is revolutionizing our knowledge of galaxies and their actively accreting black holes. Using the JWST Cycle 1 Treasury program Ultradeep…