Accès ouvert déclaré
2025
preprint
Euclid Quick Data Release (Q1): Hunting for luminous z > 6 galaxies in the Euclid Deep Fields -- forecasts and first bright detections
P. A. Oesch, R. A. A. Bowler, Sune Toft, J. Matharu, J. R. Weaver, Conor McPartland, Marko Shuntov, D. B. Sanders, B. Mobasher, H. J. McCracken, D. Carollo, M. Castellano, C.J. Conselice, Peter Eisenhardt, Y. Harikane, Grey Murphree, Stephen M. Wilkins, R. Bender, V. Capobianco, A. Cimatti, M. Cropper, F. Dubath, R Farinelli, S. Ferriol, M Frailis, K. George, B. Gillis, J. Gracia-Carpio, A. Grazian, S. V. H. Haugan, F. Hormuth, M Jhabvala, B. Joachimi, S. Kermiche, A. Kiessling, B. Kubik, M. Kunz, H Kurki-Suonio, S Ligori, V. Lindholm, I. Lloro, G. Mainetti, D. Maino, O Mansutti, N. Martinet, R. Massey, Y. Mellier, E. Merlin, G. Meylan, Antonio M. Mora, M. Moresco, R Nakajima, S. -M. Niemi, S. Paltani, F. Pasian, S. Pires, G. Polenta, Marion Poncet, L. A. Popa, F Raison, A. Renzi, Giovanni Riccio, E. Romelli, Z. Sakr, D Sapone, B. Sartoris, A Secroun, E. Sefusatti, Sergio Serrano, P. Šimon, C Sirignano, G Sirri, L. Stanco, J. Steinwagner, P. Tallada-Crespí, A. N. Taylor, I Tereno, N Tessore, F. Torradeflot, I. Tutusaus, L Valenziano, J. Valiviita, Y Wang, J. Weller, G. Zamorani, F. M. Zerbi, E Zucca, M. Calabrese, J.A. Escartin Vigo, R. Maoli, A Pezzotta, M. Pöntinen, C Porciani, V. Scottez, M. Sereno, M Viel, M. Béthermin, S Bruton, Antonello Calabrò, F Caro, T. Castro, T. Contini, O Cucciati, M.Y Elkhashab, Y. Fang, A.G Ferrari, A. Finoguenov, A. Fontana, V Gautard, E. Gaztanaga, F. Giacomini, F. Gianotti, C. M. Gutiérrez, Shoubaneh Hemmati, C. Hernández-Monteagudo, V. Kansal, D Karagiannis, K Kiiveri, Joshua Kim, M Lembo, F Lepori, G. Leroy, X. López López, J. F. Macías–Pérez, M. Magliocchetti, L. Maurin, Pierluigi Monaco, Claudio Moretti, G. Morgante, K Naidoo, S Nesseris, D. Paoletti, F Passalacqua, K Paterson, R. Pello, Alice Pisani, S Quai, P.-F Rocci, G. Rodighiero, S Sacquegna, M Sahlén, E Sarpa, M. Schultheis, D Sciotti, F. Shankar, Leigh C. Smith, Jenny G. Sorce, K Tanidis, Chunhui Tao, G. Testera, R. Teyssier, S. Tosi, A Troja, M Tucci, C. Valieri, A. Venhola, D. Vergani, G Verza, P Vielzeuf, N. A. Walton, D Scott
0Citations signalées, ce qui n’est pas une note de qualité
165Institutions déclarées
23Pays d’affiliation déclarés
Rattachement africain : dk, us, ch, gb, fr, de, it, jp, es, pt, nl, no, fi, ca, ro, lb, cl, at, rs, sk, au, Afrique du Sud, se.
Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
The evolution of the rest-frame ultraviolet luminosity function (UV LF) is a powerful probe of early star formation and stellar mass build-up. At z > 6, its bright end (MUV < -21) remains poorly constrained due to the small volumes of existing near-infrared (NIR) space-based surveys. The Euclid Deep Fields (EDFs) will cover 53 deg^2 with NIR imaging down to 26.5 AB, increasing area by a factor of 100 over previous space-based surveys. They thus offer an unprecedented opportunity to select bright z > 6 Lyman break galaxies (LBGs) and constrain the UV LF's bright end. With NIR coverage extending to 2um, Euclid can detect galaxies out to z = 13. We present forecasts for the number densities of z > 6 galaxies expected in the final EDF dataset. Using synthetic photometry from spectral energy distribution (SED) templates of z = 5--15 galaxies, z = 1--4 interlopers, and Milky Way MLT dwarfs, we explore optimal selection methods for high-z LBGs. A combination of S/N cuts with SED fitting (from optical to MIR) yields the highest-fidelity sample, recovering >76% of input z > 6 LBGs while keeping low-z contamination <10%. This excludes instrumental artefacts, which will affect early Euclid releases. Auxiliary data are critical: optical imaging from the Hyper Suprime-Cam and Vera C. Rubin Observatory distinguishes genuine Lyman breaks, while Spitzer/IRAC data help recover z > 10 sources. Based on empirical double power-law LF models, we expect >100,000 LBGs at z = 6-12 and >100 at z > 12 in the final Euclid release. In contrast, steeper Schechter models predict no z > 12 detections. We also present two ultra-luminous (MUV < -23.5) candidates from the EDF-N Q1 dataset. If their redshifts are confirmed, their magnitudes support a DPL LF model at z > 9, highlighting Euclid's power to constrain the UV LF's bright end and identify the most luminous early galaxies for follow-up.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
La source scientifique ouverte est momentanément indisponible.
Les institutions déclarées
University of CopenhagenDAWN Center for Independent LivingUniversity of GenevaUniversity of ManchesterMassachusetts Institute of TechnologyInstitut d'Astrophysique de ParisUniversity of Hawaii SystemUniversité Bourgogne Franche-ComtéUniversity of California, RiversideCentre National de la Recherche ScientifiqueSorbonne UniversitéMax Planck Institute for AstronomyOsservatorio di Astrofisica e Scienza dello SpazioTrieste Astronomical ObservatoryAstronomical Observatory of RomeNational Institute for AstrophysicsJet Propulsion LaboratoryThe University of TokyoUniversitat de ValènciaUniversity of SussexUniversity of SurreyBrera Astronomical ObservatoryScuola Internazionale Superiore di Studi AvanzatiUniversity of TriesteIstituto Nazionale di Fisica Nucleare, Sezione di TriesteInstitute for Fundamental Physics of the UniverseIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of BolognaOsservatorio Astronomico di PadovaMax Planck Institute for Extraterrestrial PhysicsLudwig-Maximilians-Universität MünchenIstituto Nazionale di Fisica Nucleare, Sezione di GenovaUniversity of GenoaAstronomical Observatory of CapodimonteEuropean Southern ObservatoryUniversidade do PortoEuropean Space AgencyInstitute of Astrophysics and Space SciencesIstituto Nazionale di Fisica Nucleare, Sezione di TorinoOsservatorio Astrofisico di TorinoUniversity of TurinLeiden UniversityEuropean Space Research and Technology CentrePort d'Informació CientíficaCentro de Investigaciones Energéticas, Medioambientales y TecnológicasIstituto Nazionale di Fisica Nucleare, Sezione di NapoliInstituto de Astrofísica de CanariasRoyal ObservatoryInstitute of Nuclear Physics of LyonInstitut de Physique des 2 Infinis de LyonUniversity of EdinburghEuropean Space Astronomy CentreEuropean Space Research InstituteLyon 1 UniversitéInstitut National de Physique Nucléaire et de Physique des ParticulesInstitució Catalana de Recerca i Estudis AvançatsInstitute of Space SciencesInstitut Català de Ciències del ClimaInstitut de Ciències del CosmosUniversity College LondonUniversity of LisbonInstitut d'Astrophysique SpatialeUniversité Paris-SaclayCentre de physique des particules de MarseilleIstituto Nazionale di Fisica Nucleare, Sezione di PadovaAix-Marseille UniversitéInstitute for Space Astrophysics and PlanetologyAgenzia Spaziale ItalianaLMU KlinikumUniversity of OsloLancaster UniversityTechnical University of DenmarkGoddard Space Flight CenterHelsinki Institute of PhysicsObservatoire de ParisLaboratoire Univers et ThéoriesUniversity of HelsinkiLaboratoire d’Astrophysique de MarseilleChâteau GombertCentre de Calcul de l’Institut National de Physique Nucléaire et de Physique des ParticulesSKA ObservatoryUniversity of MilanIstituto Nazionale di Fisica Nucleare, Sezione di MilanoUniversity of BonnIstituto Nazionale di Fisica Nucleare, Sezione di Roma IDurham UniversityUniversité Paris CitéÉcole Polytechnique Fédérale de LausanneInstitute for High Energy PhysicsUniversity of WaterlooPerimeter InstituteCommissariat à l'Énergie Atomique et aux Énergies AlternativesAstrophysique, Instrumentation et ModélisationCEA Paris-SaclayCentre National d'Études SpatialesInstitute of Space Science - INFLPR SubsidiaryUniversity of PaduaInstitut de Recherche en Astrophysique et PlanétologieSaint Joseph UniversityHeidelberg UniversityHeidelberg Institute for Theoretical StudiesUniversity of ChileUniversität InnsbruckInstitut d'Estudis Espacials de CatalunyaCalifornia Institute of TechnologyInfrared Processing and Analysis CenterUniversidad Politécnica de CartagenaUniversity of FerraraIstituto Nazionale di Fisica Nucleare, Sezione di FerraraIstituto di Radioastronomia di BolognaLagrange LaboratoryOsservatorio Astronomico della Regione Autonoma Valle d'AostaAstronomical ObservatoryUniversité Côte d'AzurObservatoire de la Côte d’AzurUniversity of OxfordSapienza University of RomeUniversité de LilleUniversité Catholique de LilleInstitute for High Performance Computing and NetworkingConsejo Superior de Investigaciones CientíficasJanssen (France)Case Western Reserve UniversityUniversidad Autónoma de MadridMax Planck Institute for AstrophysicsTechnical University of MunichUniversité Paris Sciences et LettresUniversidad de SalamancaObservatoire astronomique de StrasbourgUniversité de StrasbourgKavli Institute for the Physics and Mathematics of the UniverseUniversity of California, IrvineUniversity of GroningenInstituto de Física de CantabriaUniversity of SalentoIstituto Nazionale di Fisica Nucleare, Sezione di LecceInstitut de Recherche sur les Lois Fondamentales de l'UniversUniversity of PortsmouthAalto UniversityUniversidad de La LagunaAstronomical Institute of the Slovak Academy of SciencesRuhr University BochumUniversity of TurkuSerco (United Kingdom)ARC Centre of Excellence for Dark Matter Particle PhysicsSwinburne University of TechnologyUniversity of the Western CapeUniversity of CambridgeUniversity of ZurichLaboratoire de Physique Subatomique et de CosmologieInstitut polytechnique de GrenobleUniversité Grenoble AlpesArcetri Astrophysical ObservatoryCentro de Astrofísica da Universidade do PortoCollurania Teramo ObservatoryUppsala UniversityCentre de Recherche en InformatiqueUniversity of SouthamptonCentre de Recherche en Informatique, Signal et Automatique de LilleÉcole Centrale de LillePrinceton UniversityUniversity of OuluFlatiron Health (United States)Flatiron InstituteUniversity of British Columbia
Une affiliation ne permet pas de déduire la nationalité d’un auteur.
Les sujets associés
Galaxies: Formation, Evolution, PhenomenaGamma-ray bursts and supernovaeAstronomy and Astrophysical Research