activity
20172026
most citedEuclid. I. Overview of the Euclid mission

550 citations · 3.2k across the 127 of their papers we have counts for

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90 papers · 1 filter

astro-ph.GA2026

GA-NIFS view of LAP1: Assembly of Pop~III stellar clusters during EoR

J. Scholtz, R. Maiolino, S. Carniani +28

Lensed and Pristine 1 (LAP1) is one of the most promising candidates for the detection of so-called Pop~III stars at . In this work, we present new high-spectral-resoluti…

astro-ph.GA2026

DREAMS: Taking the Temperature of a Massive Galaxy at z ~ 11

L. Parente, E. Vanzella, M. Messa +15

We present a detailed photometric and spectroscopic analysis of Janus-11, a galaxy magnified by a factor 1.6 by the galaxy cluster MACS J0416. It was observ…

astro-ph.GA2026

Euclid Quick Data Release (Q1) Euclid spectroscopy of quasars. 2. Physical properties from spectral fitting

Euclid Collaboration, J. Calhau, G. Calderone +312

A substantial volume of spectroscopic data has become available with the Euclid Data Release (Q1), which represents a unique opportunity to study quasars (QSOs) in the Euclid Deep…

astro-ph.GA2026

Chasing Cosmic Reionization: An Extremely Faint Highly Magnified Source at with high

Sofía Rojas-Ruiz, Matteo Messa, Eros Vanzella +5

We present JWST NIRSpec IFU spectroscopic measurements of one of the faintest (M) known ionizing sources at , dubbed Small And Lensed Source Arc, SALSA. This s…

astro-ph.GA2026

Dynamical models of cluster members to probe the total mass properties of cluster subhalos. I. A comparison with parametric strong lensing models

Nicola Bianchetti, Claudio Grillo, Giovanni Granata +6

In this series of papers, we present dynamical models of cluster members in strong lensing (SL) galaxy clusters to independently probe the persistent discrepancy reported between S…

astro-ph.GA2026

A Cosmic Archipelago of lensed metal-poor galaxies at

A. Bolamperti, M. Messa, A. Zanella +21

The Cosmic Archipelago is an ensemble of galaxies, strongly lensed by the cluster MACSJ0416, showing extreme physical properties at . We combine JWST/NIRCam with deep VL…

astro-ph.GA2026

Impact of stellar population models on the estimated physical properties of galaxies

Bozhidara Stoyanova, Médéric Boquien, Paola Santini +5

Accurate estimates of fundamental physical properties of galaxies, such as star formation rates (SFRs) or stellar masses, are essential for testing and constraining models of galax…

astro-ph.GA2026

A New Perspective on Galactic Evolution: Studying the Outskirts of the Abell S1063 Galaxy Cluster

L. Pecoraro, A. Mercurio, M. Annunziatella +14

Galaxy physical properties are influenced by their environments, but the processes responsible for mass and environmental quenching and structural transformations remain debated. G…

astro-ph.GA2026

Euclid Quick Data Release (Q1). AgileLens: A scalable CNN-based pipeline for strong gravitational lens identification

Euclid Collaboration, X. Xu, R. Chen +308

We present an end-to-end, iterative pipeline for efficient identification of strong galaxy--galaxy lensing systems, applied to the Euclid Q1 imaging data. Starting from VIS catalog…

astro-ph.GA2026

Euclid Quick Data Release (Q1). The Strong Lensing Discovery Engine F -- Bright and low-redshift strong lenses

Euclid Collaboration, L. R. Ecker, M. Fabricius +346

We present 72 additional galaxy-galaxy strong lenses that complement the sample discovered in the Euclid Quick Release 1 data (63.1 deg^2) of the Strong Lens Discovery Engine (SLDE…

astro-ph.GA2026

JWST Reveals Two Overmassive Black Hole Candidates in Dwarf Galaxies at z 0.7: Pushing Black Hole Searches into the Dwarf-Galaxy Regime

E. Iani, P. Rinaldi, A. Torralba +35

We report the discovery and characterization of two compact galaxies, Pelias and Neleus, at z ~ 0.71 and z ~ 0.75, identified in MACS J0416.1-2403 and GOODS-North. Both exhibit unu…

astro-ph.GA2026★ 1 cited

The velocity dispersion function of red galaxies in four Hubble Frontier Fields galaxy clusters

G. Granata, L. Tortorelli, C. Grillo +6

We present a detailed study of the stellar kinematic properties of red member galaxies in the cores of four strong lensing galaxy clusters at intermediate redshifts included in the…

astro-ph.GA2026

Euclid preparation. 3D reconstruction of the cosmic web with simulated Euclid Deep spectroscopic samples

Euclid Collaboration, K. Kraljic, C. Laigle +321

The ongoing Euclid mission aims to measure spectroscopic redshifts for approximately two million galaxies using the H line emission detected in near-infrared slitless spectrosc…

astro-ph.GA2025★ 1 cited

A faint M Lyman-continuum leaker candidate in the epoch of reionization: Unprecedented Ly properties at z=5.725

M. Messa, E. Vanzella, T. Morishita +10

We report the unprecedented Ly properties of AMORE6, an extremely metal-poor (), low-mass (), and ultracompact (effec…

astro-ph.GA2025★ 1 cited

The Early Maturity of High-Redshift Galaxies: Insights from sSFR, M/L and SFHs at z~7-14

P. Santini, M. Castellano, A. Calabrò +23

The James Webb Space Telescope (JWST) has revealed an unexpected excess of UV-bright galaxies at z>10, unaccounted for by extrapolations from pre-JWST observations and theoretical…

astro-ph.GA2025

Image simulations of highly magnified clumpy galaxies

Irene Mini, Massimo Meneghetti, Matteo Messa +5

We present ClumPyLen, a Python-based simulator designed to produce realistic mock observations of strongly lensed, high-redshift, clumpy star-forming galaxies. The tool models gala…

astro-ph.GA2025

Euclid preparation. Predicting star-forming galaxy scaling relations with the spectral stacking code SpectraPyle

Euclid Collaboration, S. Quai, L. Pozzetti +309

We introduce SpectraPyle, a versatile spectral stacking pipeline developed for the Euclid mission's NISP spectroscopic surveys, aimed at extracting faint emission lines and spectra…

astro-ph.GA2025★ 11 cited

A Pristine Star-Forming Complex at z=4.19

E. Vanzella, M. Messa, A. Zanella +14

We report the discovery of a faint (M_1700 ~ -12.2), oxygen-deficient strongly-lensed ionizing source -- dubbed LAP2 (Lensed And Pristine 2) -- at a spectroscopic redshift of z=4.1…

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★ 9 cited

JWST spectroscopic confirmation of the Cosmic Gems arc at z=9.625 -- Insights into the small scale structure of a post-burst system

M. Messa, E. Vanzella, F. Loiacono +30

We present JWST/NIRSpec integral field spectroscopy of the Cosmic Gems arc, strongly magnified by the galaxy cluster SPT-CL J06155746. Six-hour integration using NIRSpec prism s…

astro-ph.GA2025★ 9 cited

The z = 9.625 Cosmic Gems Galaxy was a "Compact Blue Monster" Propelled by Massive Star Clusters

E. Vanzella, M. Messa, A. Adamo +36

The recent discovery of five massive stellar clusters at z=9.625 in the Cosmic Gems has raised the question about the formation mechanism of star clusters in the first half Gyr aft…

astro-ph.GA2025★ 1 cited

Unraveling the Lyman Continuum Emission of Ion3: Insights from HST multi-band imaging and X-Shooter spectroscopy

U. Meštrić, E. Vanzella, A. Beckett +15

We provide a comprehensive analysis of Ion3, the most distant LyC leaker at , using multi-band HST photometry and X-Shooter spectroscopy. Deep HST F390W imaging probe unco…

astro-ph.GA2025★ 2 cited

A new quasar strongly-lensed candidate by the galaxy cluster WHJ0400-27 with a image-separation

L. Bazzanini, G. Angora, M. Scialpi +14

Time-delay cosmography (TDC) using multiply-lensed quasars (QSOs) by galaxies has recently emerged as an independent and competitive tool to measure the value of the Hubble constan…

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…