activity
20222026
most citedEarly results from GLASS-JWST. III: Galaxy candidates at z9-15

339 citations · 1.8k across the 45 of their papers we have counts for

collaborators

45 papers

astro-ph.GA2026

The gradual decline of Ly visibility in the CANDELS fields: evidence for the combined effects of galaxy evolution and reionization

L. Napolitano, L. Pentericci, A. Ferrara +35

We investigate the evolution of Ly visibility and the physical properties of Ly emitters (LAEs) across the five CANDELS fields using publicly available JWST/NIRSpec PRISM spe…

astro-ph.GA2026

Nitrogen abundances in star-forming galaxies 2.2 Gyr after the Big Bang are not elevated

D. Schaerer, Y. I. Izotov, R. Marques-Chaves +22

Using deep medium-resolution JWST rest-optical spectra of a sample of typical star-forming galaxies (Lyman break galaxies and Lyman- emitters) from the LyC22 survey at $z \sim 3…

astro-ph.GA2025★ 2 cited

Investigating ionising sources and the complex interstellar medium of GHZ2 at

M. Castellano, L. Napolitano, B. Moreschini +27

An accurate characterisation of the physical properties of galaxies at cosmic dawn is key to understanding the origin of the high abundance of UV-bright galaxies at z10. W…

astro-ph.GA2025

Quantifying Spectroscopic Flux Variations Between JWST NIRISS and NIRSpec: Slit Losses in Emission Line Measurements of z1-3 Galaxies

Nicolò Dalmasso, Peter J. Watson, Tommaso Treu +9

We analyze JWST NIRISS and NIRSpec spectroscopic observations in the Abell 2744 galaxy cluster field. From approximately 120 candidates, we identify 12 objects with at least a prom…

astro-ph.GA2025

Extreme equivalent width-selected low-mass starbursts at : insights into their role in cosmic reionization

M. Llerena, L. Pentericci, R. Amorín +22

We investigate the properties of extreme emission line galaxies (EELGs) at and their role in reionization. Compact, low-mass galaxies with intense optical emission lines ar…

astro-ph.GA2025★ 5 cited

Ly visibility from z = 4.5 to 11 in the UDS field: Evidence for a high neutral hydrogen fraction and small ionized bubbles at z 7

L. Napolitano, L. Pentericci, M. Dickinson +28

The resonant scattering nature of Ly photons interacting with neutral hydrogen makes Ly emitters (LAEs) robust tracers of the intergalactic neutral hydrogen fraction, and thu…

astro-ph.GA2025★ 1 cited

A Lyman continuum analysis for galaxies at in the Abell 2744 Cluster Field

Y. Liu, S. Mascia, L. Pentericci +17

Identifying Lyman continuum (LyC) leakers at intermediate redshifts is crucial for understanding the properties of cosmic reionizers, as the opacity of the intergalactic medium (IG…

astro-ph.GA2025

Galaxies in the Epoch of Reionization Are All Bark and No Bite -- Plenty of Ionizing Photons, Low Escape Fractions

Casey Papovich, Justin W. Cole, Weida Hu +27

Early results from JWST suggest that epoch-of-reionization (EoR) galaxies produce copious ionizing photons, which, if they escape efficiently, could cause reionization to occur too…

astro-ph.GA2025★ 13 cited

Pushing JWST to the extremes: search and scrutiny of bright galaxy candidates at z15-30

M. Castellano, A. Fontana, E. Merlin +50

We designed customized Lyman-break color selection techniques to identify galaxy candidates in the redshift ranges and . The selection was pe…

astro-ph.GA2025★ 10 cited

Little impact of mergers and galaxy morphology on the production and escape of ionizing photons in the early Universe

S. Mascia, L. Pentericci, M. Llerena +28

Compact, star-forming galaxies with high star formation rate surface densities () are often efficient Lyman continuum (LyC) emitters at , likely as inten…

astro-ph.GA2024★ 1 cited

Not just PAH: why galaxies turn red in the Near-Infrared

Benedetta Vulcani, Tommaso Treu, Matthew Malkan +11

We measure the spectral properties of a sample of 20 galaxies at z~0.35 selected for having surprisingly red JWST/NIRCAM F200W-F444W colors. 19 galaxies were observed with JWST/NIR…

astro-ph.GA2024★ 41 cited

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.…

astro-ph.GA2024★ 49 cited

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…

astro-ph.GA2024★ 28 cited

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…

astro-ph.GA2024★ 14 cited

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…

astro-ph.GA2024★ 3 cited

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…

astro-ph.GA2024★ 13 cited

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…

astro-ph.GA2024★ 49 cited

Peering into cosmic reionization: the Ly visibility evolution from galaxies at = 4.5-8.5 with JWST

L. Napolitano, L. Pentericci, P. Santini +28

The resonant scattering interaction between Ly photons and neutral hydrogen implies that a partially neutral IGM can significantly impact the detectability of Ly emission in…

astro-ph.GA2024★ 28 cited

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…

astro-ph.GA2024

Characterizing the Average Interstellar Medium Conditions of Galaxies at 5.6-9 with UV and Optical Nebular Lines

Weida Hu, Casey Papovich, Mark Dickinson +30

Ultraviolet (UV; rest-frame A) spectra provide a wealth of diagnostics to characterize fundamental galaxy properties, such as their chemical enrichment, the nature…

astro-ph.GA2023★ 8 cited

CEERS: Increasing Scatter along the Star-Forming Main Sequence Indicates Early Galaxies Form in Bursts

Justin W. Cole, Casey Papovich, Steven L. Finkelstein +29

We present the star-formation-rate -- stellar-mass (SFR-M) relation for galaxies in the CEERS survey at . We model the \jwst\ and \hst\ rest-UV and rest-op…

astro-ph.GA2023★ 18 cited

The VANDELS ESO public spectroscopic survey: The spectroscopic measurements catalogue

M. Talia, C. Schreiber, B. Garilli +36

VANDELS is a deep spectroscopic survey, performed with the VIMOS instrument at VLT, aimed at studying in detail the physical properties of high-redshift galaxies. VANDELS targeted…

astro-ph.GA2023★ 5 cited

New insight on the nature of cosmic reionizers from the CEERS survey

S. Mascia, L. Pentericci, A. Calabrò +29

The Epoch of Reionization (EoR) began when galaxies grew in abundance and luminosity, so their escaping Lyman continuum (LyC) radiation started ionizing the surrounding neutral int…

astro-ph.GA2023★ 6 cited

Identifying Lyα emitter candidates with Random Forest: learning from galaxies in CANDELS survey

L. Napolitano, L. Pentericci, A. Calabrò +8

The physical processes which make a galaxy a Lyman Alpha Emitter have been extensively studied for the past 25 years. However, the correlations between physical and morphological p…