SM
Sara Mascia
astro-ph.GAastro-ph.COastro-ph.HEastro-ph.IM
On Valency
published · living versionsW_wbnq9c89·v1 · currentpublished
A Little Red Dot emerging from a nitrogen-rich UV-luminous galaxy with Very Massive Stars
with Alberto Torralba, Jorryt Matthee, Rui Marques-Chaves, Fabrice Martins +11
1 version
Preprints & journals
61 papers in the corpus · 2022–2026A Little Red Dot emerging from a nitrogen-rich UV-luminous galaxy with Very Massive Stars2610.29887v1 · Alberto Torralba, Jorryt Matthee, Rui Marques-Chaves et al.2026 · 0 citationsarXivon Valency
The gradual decline of Ly visibility in the CANDELS fields: evidence for the combined effects of galaxy evolution and reionization2609.00199v1 · L. Napolitano, L. Pentericci, A. Ferrara et al.2026 · 0 citationsarXiv
The ionizing properties of JWST's compact broad-line emitters2608.25021v1 · Sara Mascia, Jorryt Matthee, Alberto Torralba et al.2026 · 0 citationsarXiv
Little Red Dots at z~2 in EIGER reveal a gentle decline with respect to their peak number density at z~52607.00084v1 · Shrriya Kapoor, Jorryt Matthee, Alberto Torralba et al.2026 · 0 citationsarXiv
The quasi-star model for Little Red Dots: potential and challenges2606.06575v2 · Fabrizio Gentile, Mauro Giavalisco, Emanuele Daddi et al.2026 · 0 citationsarXiv
A new sample of Little Red Dots at in DESI DR1: Broad Balmer lines, low ionization spectrum and no variability2605.14233v1 · Kevin Park, Alberto Torralba, Jorryt Matthee et al.2026 · 0 citationsarXiv
Using Ly Transmitted Spectrum to Probe IGM Transmission and Identify Ionized Structures in Cosmic Reionization2605.02539v1 · Weida Hu, Casey Papovich, Lu Shen et al.2026 · 0 citationsarXiv
A Black Hole Star at Cosmic Noon: Extreme Balmer break, photospheric continuum, and broad absorption by thick winds in a Little Red Dot at z=1.72603.28335v3 · Alberto Torralba, Jorryt Matthee, Andrea Weibel et al.2026 · 0 citationsarXiv
The Engine and its Flows: Little Red Dot spectra are shaped by the column densities of their gas envelopes2603.17667v1 · Jorryt Matthee, Alberto Torralba, Gabriele Pezzulli et al.2026 · 2 citationsarXiv
JWST Reveals Two Overmassive Black Hole Candidates in Dwarf Galaxies at z 0.7: Pushing Black Hole Searches into the Dwarf-Galaxy Regime2603.17967v1 · E. Iani, P. Rinaldi, A. Torralba et al.2026 · 0 citationsarXiv
Nitrogen abundances in star-forming galaxies 2.2 Gyr after the Big Bang are not elevated2601.06968v1 · D. Schaerer, Y.I. Izotov, R. Marques-Chaves et al.2026 · 1 citationarXiv
Investigating ionising sources and the complex interstellar medium of GHZ2 at 2512.08490v2 · M. Castellano, L. Napolitano, B. Moreschini et al.2025 · 3 citationsarXiv
Quantifying Spectroscopic Flux Variations Between JWST NIRISS and NIRSpec: Slit Losses in Emission Line Measurements of z$\sim$1-3 Galaxies2510.27036v1 · Nicolo Dalmasso, Peter J. Watson, Tommaso Treu et al.2025 · 1 citationarXiv
Extreme equivalent width-selected low-mass starbursts at : insights into their role in cosmic reionization2510.25647v2 · M. Llerena, L. Pentericci, R. Amor'in et al.2025 · 1 citationarXiv
Rapid, out of equilibrium metal enrichment indicated by a flat mass-metallicity relation at z~6 from NIRCam grism spectroscopy2510.19959v2 · Gauri Kotiwale, Jorryt Matthee, Daichi Kashino et al.2025 · 4 citationsarXiv
The slope and scatter of the star forming main sequence at z~5 : reconciling observations with simulations2510.19044v2 · Claudia Di Cesare, Jorryt Matthee, Rohan P. Naidu et al.2025 · 3 citationsarXiv
The warm outer layer of a Little Red Dot as the source of [Fe II] and collisional Balmer lines with scattering wings2510.00103v4 · Alberto Torralba, Jorryt Matthee, Gabriele Pezzulli et al.2025 · 20 citationsarXiv
Ly visibility from z = 4.5 to 11 in the UDS field: Evidence for a high neutral hydrogen fraction and small ionized bubbles at z 72508.14171v2 · L. Napolitano, L. Pentericci, M. Dickinson et al.2025 · 5 citationsarXiv
A Lyman continuum analysis for galaxies at in the Abell 2744 Cluster Field2507.11045v1 · Y. Liu, S. Mascia, L. Pentericci et al.2025 · 1 citationA&A 704, A328 (2025)
A weak Ly halo for an extremely bright Little Red Dot: Indications of enshrouded SMBH growth2505.09542v3 · Alberto Torralba, Jorryt Matthee, Gabriele Pezzulli et al.2025 · 8 citationsA&A 705, A147 (2026)
Galaxies in the Epoch of Reionization Are All Bark and No Bite -- Plenty of Ionizing Photons, Low Escape Fractions2505.08870v2 · Casey Papovich, Justin W. Cole, Weida Hu et al.2025 · 7 citationsarXiv
Pushing JWST to the extremes: search and scrutiny of bright galaxy candidates at z$\simeq$15-302504.05893v2 · M. Castellano, A. Fontana, E. Merlin et al.2025 · 19 citationsA&A 704, A158 (2025)
Little impact of mergers and galaxy morphology on the production and escape of ionizing photons in the early Universe2501.08268v1 · S. Mascia, L. Pentericci, M. Llerena et al.2025 · 14 citationsA&A 701, A122 (2025)
Not just PAH: why galaxies turn red in the Near-Infrared2412.07070v1 · Benedetta Vulcani, Tommaso Treu, Matthew Malkan et al.2024 · 2 citationsA&A 693, A204 (2025)
The ionizing photon production efficiency of star-forming galaxies at 2412.01358v2 · M. Llerena, L. Pentericci, L. Napolitano et al.2024 · 16 citationsA&A 698, A302 (2025)
Evolution of the UV slope of galaxies at cosmic morning (z > 4): the properties of extremely blue galaxies2412.01623v2 · D.Dottorini, A.Calabro, L.Pentericci et al.2024 · 13 citationsA&A 698, A234 (2025)
The Dual Nature of GHZ9: Coexisting Active Galactic Nuclei and Star Formation Activity in a Remote X-ray Source at z = 10.1452410.18763v4 · Lorenzo Napolitano, Marco Castellano, Laura Pentericci et al.2024 · 40 citationsThe Astrophysical Journal, 989:75 (12pp), 2025
Seven wonders of Cosmic Dawn: JWST confirms a high abundance of galaxies and AGNs at z 9-11 in the GLASS field2410.10967v1 · L. Napolitano, M. Castellano, L. Pentericci et al.2024 · 55 citationsA&A 693, A50 (2025)
ASTRODEEP-JWST: NIRCam-HST multiband photometry and redshifts for half a million sources in six extragalactic deep fields2409.00169v3 · E. Merlin, P. Santini, D. Paris et al.2024 · 44 citationsA&A 691, A240 (2024)
The GLASS-JWST Early Release Science Program. IV. Data release of 263 spectra from 245 unique sources2408.16675v1 · S. Mascia, G. Roberts-Borsani, T. Treu et al.2024 · 16 citationsarXiv
Evidence of extreme ionization conditions and low metallicity in GHZ2/GLASS-z12 from a combined analysis of NIRSpec and MIRI observations2403.12683v2 · Antonello Calabro, Marco Castellano, Jorge A. Zavala et al.2024 · 38 citationsarXiv
JWST NIRSpec Spectroscopy of the Remarkable Bright Galaxy GHZ2/GLASS-z12 at Redshift 12.342403.10238v2 · Marco Castellano, Lorenzo Napolitano, Adriano Fontana et al.2024 · 175 citationsarXiv
The evolution of the SFR and Sigma-SFR of galaxies in cosmic morning (4 < z < 10)2402.17829v2 · A. Calabro, L. Pentericci, P. Santini et al.2024 · 30 citationsA&A 690, A290 (2024)
Peering into cosmic reionization: the Ly visibility evolution from galaxies at = 4.5-8.5 with JWST2402.11220v1 · L. Napolitano, L. Pentericci, P. Santini et al.2024 · 52 citationsA&A 688, A106 (2024)
Characterizing the Average Interstellar Medium Conditions of Galaxies at 5.6-9 with UV and Optical Nebular Lines2401.12402v1 · Weida Hu, Casey Papovich, Mark Dickinson et al.2024 · 0 citationsarXiv
CEERS: Increasing Scatter along the Star-Forming Main Sequence Indicates Early Galaxies Form in Bursts2312.10152v1 · Justin W. Cole, Casey Papovich, Steven L. Finkelstein et al.2023 · 57 citationsarXiv
The VANDELS ESO public spectroscopic survey: The spectroscopic measurements catalogue2309.14436v1 · M. Talia, C. Schreiber, B. Garilli et al.2023 · 18 citationsA&A 678, A25 (2023)
New insight on the nature of cosmic reionizers from the CEERS survey2309.02219v1 · S. Mascia, L. Pentericci, A. Calabro et al.2023 · 63 citationsarXiv
Identifying Ly{\alpha} emitter candidates with Random Forest: learning from galaxies in CANDELS survey2307.11818v1 · L. Napolitano, L. Pentericci, A. Calabro et al.2023 · 6 citationsA&A 677, A138 (2023)
Near-infrared emission line diagnostics for AGN from the local Universe to redshift 32306.08605v3 · Antonello Calabro, Laura Pentericci, Anna Feltre et al.2023 · 36 citationsA&A 679, A80 (2023)
The ionizing photon production efficiency of bright z$\sim$2-5 galaxies2305.13364v1 · M. Castellano, D. Belfiori, L. Pentericci et al.2023 · 26 citationsarXiv
Early Results from GLASS-JWST XXIII: The transmission of Lyman-alpha from UV-faint z ~ 3-6 galaxies2304.02666v2 · Gonzalo Prieto-Lyon, Charlotte Mason, Sara Mascia et al.2023 · 19 citationsarXiv
Early Results from GLASS-JWST XXII: Rest frame UV-optical spectral properties of Lyman-alpha emitting galaxies at 3 z 62304.01437v1 · Namrata Roy, Alaina Henry, Tommaso Treu et al.2023 · 28 citationsarXiv
Early results from GLASS-JWST. XX: Unveiling a population of "red-excess'' galaxies in Abell2744 and in the coeval field2303.01115v2 · Benedetta Vulcani, Tommaso Treu, Antonello Calabro et al.2023 · 11 citationsarXiv
A massive interacting galaxy 510 million years after the Big Bang2303.00306v2 · Kristan Boyett, Michele Trenti, Nicha Leethochawalit et al.2023 · 53 citationsarXiv
Insights into the reionization epoch from cosmic-noon-CIV emitters in the VANDELS survey2301.09328v1 · S. Mascia, L. Pentericci, A. Saxena et al.2023 · 17 citationsarXiv
Early Results from GLASS-JWST. XXI: Rapid assembly of a galaxy at z=6.23 revealed by its C/O abundance2301.07126v2 · Tucker Jones, Ryan Sanders, Yuguang Chen et al.2023 · 57 citationsarXiv
Closing in on the sources of cosmic reionization: first results from the GLASS-JWST program2301.02816v2 · S. Mascia, L. Pentericci, A. Calabro' et al.2023 · 85 citationsA&A 672, A155 (2023)
The GLASS-JWST Early Release Science Program. II. Stage I release of NIRCam imaging and catalogs in the Abell 2744 region2301.02179v2 · Diego Paris, Emiliano Merlin, Adriano Fontana et al.2023 · 37 citationsarXiv
Early Results from GLASS-JWST. XIX: A High Density of Bright Galaxies at in the Abell 2744 Region2212.06666v3 · Marco Castellano, Adriano Fontana, Tommaso Treu et al.2022 · 126 citationsarXiv
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