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Early Results from GLASS-JWST. XXV. Electron Density in the Interstellar Medium at with NIRSpec High-resolution Spectroscopy
Sijia Li, Xin Wang, Yuguang Chen +17
The electron density () of the interstellar medium (ISM) in star-forming galaxies is intimately linked to star formation and ionization condition. Using the high-resol…
What can we learn from the Nitrogen abundance of High-z galaxies?
Massimo Stiavelli, Takahiro Morishita, Marco Chiaberge +9
We present measurements of the gas-phase Oxygen and Nitrogen abundances obtained by applying the direct method to JWST NIRspec spectroscopy for 6 galaxies at redshift g…
BEACON: JWST NIRCam Pure-parallel Imaging Survey. I. Survey Design and Initial Results
Takahiro Morishita, Charlotte A. Mason, Kimi C. Kreilgaard +32
We introduce the Bias-free Extragalactic Analysis for Cosmic Origins with NIRCam (BEACON) survey, a JWST Cycle2 program allocated up to 600 pure-parallel hours of observations. BEA…
ASTRODEEP-JWST: NIRCam-HST multiband photometry and redshifts for half a million sources in six extragalactic deep fields
E. Merlin, P. Santini, D. Paris +52
We present a set of photometric catalogs primarily aimed at providing the community with a comprehensive database for the study of galaxy populations in the high redshift Universe.…
Seven wonders of Cosmic Dawn: JWST confirms a high abundance of galaxies and AGNs at z 9-11 in the GLASS field
L. Napolitano, M. Castellano, L. Pentericci +24
We present JWST/NIRSpec PRISM follow-up of candidate galaxies at z=9-11 selected from deep JWST/NIRCam photometry in GLASS-JWST Early Release Science data. We spectroscopically con…
The Dual Nature of GHZ9: Coexisting Active Galactic Nuclei and Star Formation Activity in a Remote X-ray Source at z = 10.145
Lorenzo Napolitano, Marco Castellano, Laura Pentericci +33
We present James Webb Space Telescope (JWST)/NIRSpec PRISM spectroscopic characterization of GHZ9 at z= 10.145 0.010, currently the most distant source detected by the Chandr…
RUBIES Reveals a Massive Quiescent Galaxy at z=7.3
Andrea Weibel, Anna de Graaff, David J. Setton +26
We report the spectroscopic discovery of a massive quiescent galaxy at , just Myr after the Big Bang. RUBIES-UDS-QG-z7 was selected from public…
The GLASS-JWST Early Release Science Program. IV. Data release of 263 spectra from 245 unique sources
S. Mascia, G. Roberts-Borsani, T. Treu +24
We release fully reduced spectra obtained with NIRSpec onboard JWST as part of the GLASS-JWST Early Release Science Program and a follow-up Director's Discretionary Time program 27…
Accelerated Emergence of Evolved Galaxies in Early Overdensities at
Takahiro Morishita, Zhaoran Liu, Massimo Stiavelli +8
We report the identification of two galaxy overdensities at in the sightline of the galaxy cluster Abell 2744. These overdensities consist of 25 and 17 member galaxies,…
The BoRG- Survey: Abundance and Mass-to-light Ratio of Luminous Galaxies from Independent Sight Lines with NIRSpec
Sofía Rojas-Ruiz, Micaela B. Bagley, Guido Roberts-Borsani +12
We present new results on the rest-frame UV luminosity function (UVLF) and stellar mass-to-light (M/L) ratio of bright (M mag) spectroscopically-confirmed gal…
The BoRG-JWST Survey: Program Overview and First Confirmations of Luminous Reionization-Era Galaxies from Pure-Parallel Observations
Guido Roberts-Borsani, Micaela Bagley, Sofía Rojas-Ruiz +18
We present the BoRG-JWST survey, a combination of two JWST Cycle 1 programs aimed at obtaining NIRSpec spectroscopy of representative, UV-bright galaxy candidates across 2…
Rising from the ashes: evidence of old stellar populations and rejuvenation events in the very early Universe
Callum Witten, William McClymont, Nicolas Laporte +12
While JWST has observed galaxies assembling as early as , evidence of galaxies with significant old stellar populations in the Epoch of Reionisation (EoR) -- the descendan…
Strong Balmer break objects at z ~ 7-10 uncovered with JWST
A. Kuruvanthodi, D. Schaerer, R. Marques-Chaves +4
We report the discovery of robust spectroscopically confirmed Balmer break (BB) galaxies and candidates, with secure spectroscopic redshifts from publicly avail…
The First Billion Years, According to JWST
Angela Adamo, Hakim Atek, Micaela B. Bagley +46
With stunning clarity, JWST has revealed the Universe's first billion years. The scientific community is analyzing a wealth of JWST imaging and spectroscopic data from that era, an…
Joint Optical and Infrared Observations of N and O Reveal the Dust-Obscured Gas in Haro 3
Yuguang Chen, Tucker Jones, Ryan L. Sanders +22
Accurate chemical compositions of star-forming regions are a critical diagnostic tool to characterize the star formation history and gas flows which regulate galaxy formation. Howe…
Evidence of extreme ionization conditions and low metallicity in GHZ2/GLASS-z12 from a combined analysis of NIRSpec and MIRI observations
Antonello Calabro, Marco Castellano, Jorge A. Zavala +19
GHZ2/GLASS-z12 has been recently observed by JWST with both NIRSpec and MIRI spectrographs, making it the most distant galaxy () with complete spectroscopic coverag…
JWST NIRSpec Spectroscopy of the Remarkable Bright Galaxy GHZ2/GLASS-z12 at Redshift 12.34
Marco Castellano, Lorenzo Napolitano, Adriano Fontana +28
We spectroscopically confirm the mag galaxy GHZ2/GLASS-z12 to be at redshift . The source was selected via NIRCam photometry in GLASS-JWST ERS data, p…
Between the Extremes: A JWST Spectroscopic Benchmark for High-redshift Galaxies Using ~500 Confirmed Sources at
Guido Roberts-Borsani, Tommaso Treu, Alice Shapley +6
The exceptional spectra of the most luminous sources observed so far have challenged our understanding of early galaxy evolution, requiring a new observational benchmark for…
Reply to: Effects of density and temperature variations on the metallicity of Mrk 71
Yuguang Chen, Tucker Jones, Ryan Sanders +9
In Chen et al., 2023 (C23; arXiv:2304.09898), we introduced a new method to directly measure temperature fluctuations and applied it to a nearby dwarf galaxy, Mrk 71, finding a tem…
The evolution of the SFR and Sigma-SFR of galaxies in cosmic morning (4 < z < 10)
A. Calabrò, L. Pentericci, P. Santini +28
The galaxy integrated star-formation rate (SFR) surface density () has been proposed as a valuable diagnostic of the mass accumulation in galaxies as being more tightl…
Diverse Oxygen Abundance in Early Galaxies Unveiled by Auroral Line Analysis with JWST
Takahiro Morishita, Massimo Stiavelli, Claudio Grillo +10
We present deep JWST NIRSpec observations in the sightline of MACS J1149.5+2223, a massive cluster of galaxies at . We report the spectroscopic redshift of 28 sources at $3…