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Early Results from GLASS-JWST. XIX: A High Density of Bright Galaxies at in the Abell 2744 Region
Marco Castellano, Adriano Fontana, Tommaso Treu +38
We report the detection of a high density of redshift galaxies behind the foreground cluster Abell 2744, selected from imaging data obtained recently with NIRCam onbo…
A Glimpse of the Stellar Populations and Elemental Abundances of Gravitationally Lensed, Quiescent Galaxies at with Keck Deep Spectroscopy
Zhuyun Zhuang, Nicha Leethochawalit, Evan N. Kirby +13
Gravitational lenses can magnify distant galaxies, allowing us to discover and characterize the stellar populations of intrinsically faint, quiescent galaxies that are otherwise ex…
Early results from GLASS-JWST. XIV: A spectroscopically confirmed protocluster 650 million years after the Big Bang
Takahiro Morishita, Guido Roberts-Borsani, Tommaso Treu +39
We present the spectroscopic confirmation of a protocluster at behind the galaxy cluster Abell2744 (hereafter A2744-z7p9OD). Using JWST NIRSpec, we find seven galaxies wit…
The nature of an ultra-faint galaxy in the cosmic Dark Ages seen with JWST
Guido Roberts-Borsani, Tommaso Treu, Wenlei Chen +44
In the first billion years after the Big Bang, sources of ultraviolet (UV) photons are believed to have ionized intergalactic hydrogen, rendering the Universe transparent to UV rad…
Deep ALMA redshift search of a z~12 GLASS-JWST galaxy candidate
Tom J. L. C. Bakx, Jorge A. Zavala, Ikki Mitsuhashi +20
The James Webb Space Telescope (JWST) has discovered a surprising abundance of bright galaxy candidates in the very early Universe ( Myrs after the Big Bang), calling into q…
Early Results From GLASS-JWST. XVII: Building the First Galaxies -- Chapter 1. Star Formation Histories at 5<z < 7
A. Dressler, B. Vulcani, T. Treu +19
JWST observations of high redshift galaxies are used to measure their star formation histories - the buildup of stellar mass in the earliest galaxies. Here we use a novel analysis…
Early results from GLASS-JWST XV: properties of the faintest red sources in the NIRCAM deep fields
Karl Glazebrook, T. Nanayakkara, C. Jacobs +20
We present a first look at the reddest 2-5 sources found in deep images from the GLASS Early Release Science program. We undertake a general search, i.e. not looking for an…
Early results from GLASS-JWST. VI: Extreme rest-optical equivalent widths detected in NIRISS Wide Field Slitless Spectroscopy
K. Boyett, S. Mascia, L. Pentericci +27
Wide Field Slitless Spectroscopy (WFSS) provides a powerful tool for detecting strong line emission in star forming galaxies (SFGs) without the need for target pre-selection. As pa…
Unresolved z~8 point sources and their impact on the bright end of the galaxy luminosity function
Yuzo Ishikawa, Takahiro Morishita, Massimo Stiavelli +7
The distribution and properties of the first galaxies and quasars are critical pieces of the puzzle in understanding galaxy evolution and cosmic reionization. Previous studies have…
The GLASS James Webb Space Telescope Early Release Science Program. I. Survey Design and Release Plans
T. Treu, G. Roberts-Borsani, M. Bradac +43
The GLASS James Webb Space Telescope Early Release Science (hereafter GLASS-JWST-ERS) Program will obtain and make publicly available the deepest extragalactic data of the ERS camp…
Early results from GLASS-JWST XVI: Discovering a bluer z~4-7 Universe through UV slopes
Themiya Nanayakkara, Karl Glazebrook, Colin Jacobs +20
We use the GLASS-JWST Early Release Science NIRCam parallel observations to provide a first view of the UV continuum properties of NIRCam/F444W selected galaxies at 4<z<7. By combi…
Early results from GLASS-JWST. IV: Spatially resolved metallicity in a low-mass galaxy with NIRISS
Xin Wang, Tucker Jones, Benedetta Vulcani +19
We report the first gas-phase metallicity map of a distant galaxy measured with the James Webb Space Telescope (JWST). We use the NIRISS slitless spectroscopy acquired by the GLASS…
Early results from GLASS-JWST. V: the first rest-frame optical size-luminosity relation of galaxies at
Lilan Yang, T. Morishita, N. Leethochawalit +23
We present the first rest-frame optical size-luminosity relation of galaxies at , using the NIRCam imaging data obtained by the GLASS James Webb Space Telescope Early Release…
Early results from GLASS-JWST. II: NIRCam extra-galactic imaging and photometric catalog
Emiliano Merlin, Andrea Bonchi, Diego Paris +26
We present the reduced images and multi-wavelength catalog of the first JWST NIRCam extra-galactic observations from the GLASS Early Release Science Program, obtained as coordinate…
Early results from GLASS-JWST. XI: Stellar masses and mass-to-light ratio of z>7 galaxies
P. Santini, A. Fontana, M. Castellano +26
We exploit James Webb Space Telescope (JWST) NIRCam observations from the GLASS-JWST-Early Release Science program to investigate galaxy stellar masses at z>7. We first show that J…
Early results from GLASS-JWST. X: Rest-frame UV-optical properties of galaxies at 7 < z < 9
N. Leethochawalit, M. Trenti, P. Santini +23
We present the first James Webb Space Telescope/NIRCam-led determination of galaxy properties based on broadband imaging from 0.8 to 5~ as part of the GLASS-JW…
Early results from GLASS-JWST. III: Galaxy candidates at z9-15
Marco Castellano, Adriano Fontana, Tommaso Treu +27
We present the results of a first search for galaxy candidates at z9--15 on deep seven-bands NIRCam imaging acquired as part of the GLASS-JWST Early Release Science Program o…
The UV luminosity functions of Bright z>8 Galaxies: Determination from ~0.41 deg2 of HST Observations along ~sim 300 independent sightlines
Nicha Leethochawalit, Guido Roberts-Borsani, Takahiro Morishita +2
We determine the bright end of the rest-frame UV luminosity function (UVLF) at by selecting bright photometric candidates from the largest systematic compilat…
The size-luminosity relation of lensed galaxies at in the Hubble Frontier Fields
Lilan Yang, Nicha Leethochawalit, Tommaso Treu +8
We measure the size-luminosity relation of photometrically-selected galaxies within the redshift range , using galaxies lensed by six foreground Hubble Frontier Fields (H…