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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…
Spectroscopic confirmation of four metal-poor galaxies at z=10.3-13.2
Emma Curtis-Lake, Stefano Carniani, Alex Cameron +56
Finding and characterising the first galaxies that illuminated the early Universe at cosmic dawn is pivotal to understand the physical conditions and the processes that led to the…
The production of ionizing photons in UV-faint z~3-7 galaxies
Gonzalo Prieto-Lyon, Victoria Strait, Charlotte A. Mason +20
The demographics of the production and escape of ionizing photons from UV-faint early galaxies is a key unknown in discovering the primary drivers of reionization. With the advent…
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…
Morpheus Reveals Distant Disk Galaxy Morphologies with JWST: The First AI/ML Analysis of JWST Images
Brant E. Robertson, Sandro Tacchella, Benjamin D. Johnson +21
The dramatic first images with James Webb Space Telescope (JWST) demonstrated its power to provide unprecedented spatial detail for galaxies in the high-redshift universe. Here, we…
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. VII: evidence for lensed, gravitationally bound proto-globular clusters at z=4 in the Hubble Frontier Field A2744
E. Vanzella, M. Castellano, P. Bergamini +29
We investigate the blue and optical rest-frame sizes (lambda~2300A-4000A) of three compact star-forming regions in a galaxy at z=4 strongly lensed (x30, x45, x100) by the Hubble Fr…
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…
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…
First Insights into the ISM at with JWST: Possible Physical Implications of a High [O III]/[O III]
Harley Katz, Aayush Saxena, Alex J. Cameron +15
We present a detailed analysis of the rest-frame optical emission line ratios for three spectroscopically confirmed galaxies at . The galaxies were identified in the James W…
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. I: Confirmation of Lensed Lyman-Break Galaxies Behind the Abell 2744 Cluster With NIRISS
Guido Roberts-Borsani, Takahiro Morishita, Tommaso Treu +29
We present the first search for , continuum-confirmed sources with NIRISS/WFS spectroscopy over the Abell 2744 Frontier Fields cluster, as part of the GLASS-JWST ERS s…
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…