Accès ouvert déclaré
2025
article
Euclid Quick Data Release (Q1)
L. Bisigello, G. Rodighiero, S. Fotopoulou, Federica Ricci, K. Jahnkę, A. Feltre, V. Allevato, F. Shankar, P. Cassata, E. Dalla Bontà, G. Gandolfi, Georges Girardi, M. Giulietti, A. Grazian, Christopher Roland Lovell, R. Maiolino, T. Matamoro Zatarain, M. Mezcua, Isabella Prandoni, D. Roberts, W. Roster, Mara Salvato, M. Siudek, F. Tarsitano, Yoshiki Toba, A. Vietri, Lingyu Wang, G. Zamorani, M. Baes, S. Belladitta, Angelos Nersesian, Luigi Spinoglio, X. López López, N. Aghanim, B. Altieri, Adam Amara, S. Andreon, N. Auricchio, H. Aussel, C. Baccigalupi, M. Baldi, A. Balestra, S. Bardelli, Alberto Basset, Paola Maria Battaglia, R. Bender, A. Biviano, A Bonchi, E. Branchini, M. Brescia, J. Brinchmann, S. Camera, G Cañas-Herrera, V. Capobianco, C. Carbone, J. Carretero, Santiago Casas, M. Castellano, G. Castignani, S Cavuoti, K. C. Chambers, A Cimatti, C. Colodro-Conde, G. Congedo, Christopher J. Conselice, L. Conversi, Y. Copin, F Courbin, Hélène M. Courtois, M. Cropper, A. Da Silva, Hubert Degaudenzi, G. De Lucia, Anna M. Di Giorgio, C. Dolding, Herve A. Dole, F Dubath, C. A. J. Duncan, X. Dupac, S. Dusini, A. Ealet, S. Escoffier, Maria Farina, R Farinelli, F Faustini, S Ferriol, Fabio Finelli, M. Frailis, Enrico Franceschi, Samuele Galeotta, Koshy George, William Gillard, B Gillis, C. Giocoli, P. Gómez-Álvarez, J. Gracia-Carpio, B. R. Granett, F. Grupp, Stephen Gwyn, S. V. H. Haugan, Henk Hoekstra, W. A. Holmes, I. Hook, F. Hormuth, Allan Hornstrup, Patrick Hudelot, Murzban D. Jhabvala, Elina Keihänen, S. Kermiche, A. Kiessling, Bogna Kubik, M. Kümmel, Martin Kunz, H Kurki-Suonio, Q. Le Boulc'h, Amandine M. C. Le Brun, David Le Mignant, P. Liebing, S. Ligori, Per B. Lilje, V. Lindholm, I. Lloro, Gabriele Mainetti, D Maino, E Maiorano, O. Mansutti, S. Marcin, O Marggraf, M. Martinelli, N. Martinet, F. Marulli, R Massey, S. Maurogordato, Eduardo Medinaceli, S. Mei, M. Melchior, Y. Mellier, Massimo Meneghetti, E Merlin, G. Meylan, A. Gañán Mora, M. Moresco, L. Moscardini, R. Nakajima, C. Neissner, S.-M Niemi, James W Nightingale, C. Padilla, S. Paltani, FABIO PASIAN, K. Pedersen, Will J. Percival, V. Pettorino, S. Pires, G. Polenta, M. Poncet, L.A. Popa, Lucia Pozzetti, F. Raison, Rafael Rebolo, Alessandro Renzi, Jason D. Rhodes, Giuseppe Riccio, E. Romelli, M. Roncarelli, E. Rossetti, Huub J. A. Röttgering, Ben Rusholme, R Saglia, Z. Sakr, D Sapone, B. Sartoris, J.A Schewtschenko, M. Schirmer, Peter Schneider, T. Schrabback, M. Scodeggio, A. Secroun, G Seidel, S Serrano, Patrick Simon, C. Sirignano, Gabriele Sirri, L. Stanco, J. Steinwagner, Pau Tallada-Crespí, A.N. Taylor, H.I Teplitz, I. Tereno, Sune Toft, R. Toledo-Moreo, F. Torradeflot, I. Tutusaus, L. Valenziano, J. Väliviita, T. Vassallo, G. Verdoes Kleijn, Alfonso Veropalumbo, Yun Wang, J. Weller, A Zacchei, Filippo Maria Zerbi, I. A. Zinchenko, Elena Zucca, M. Ballardini, M. Bolzonella, E. Bozzo, C. Burigana, R. Cabanac, A. Cappi, D. Di Ferdinando, J.A. Escartin Vigo, L. Gabarra, J Martín-Fleitas, Shona Z. Matthew, Matteo Maturi, N. Mauri, A Pezzotta, Mikko Pöntinen, C. Porciani, I Risso, V Scottez, Mauro Sereno, Matteo Tenti, Matteo Viel, Martin Wiesmann, Y. Akrami, I.T Andika, S Anselmi, M. Archidiacono, Fernando Atrio-Barandela, Christophe O. Benoist, K Benson, Daniele Bertacca, M. Béthermin, A. Blanchard, L Blot, M.L Brown, S Bruton, A Calabrò, F Caro, Carla Sofia Carvalho, T. Castro, Yann Philippe Charles, F Cogato, T. Contini, A.R. Cooray, O. Cucciati, S. Davini, F. De Paolis, G. Desprez, Anastasio Díaz-Sánchez, J.J Diaz, S. Di Domizio, J. M. Diego, A Enia, Yuhong Fang, Angelo Giuseppe Ferrari, P.G Ferreira, A. Finoguenov, A. Fontana, Fabio Fontanot, Antonio Franco, Ken M. Ganga, J. García-Bellido, T Gasparetto, Valérie Gautard, ENRIQUE GAZTAÑAGA, Francesco Maria Giacomini, Fulvio Gianotti, G. Gozaliasl, M Guidi, C. M. Gutiérrez, Alex D. Hall, W.G Hartley, Shoubaneh Hemmati, C. Hernández-Monteagudo, Hendrik Hildebrandt, Jens Hjorth, Jari J. E. Kajava, Y. W. Kang, Vanshika Kansal, D. Karagiannis, K. Kiiveri, C. C. Kirkpatrick, Sandor Kruk, J Le Graet, L Legrand, Maria Antonietta Lembo, F Lepori, G Leroy, G.F Lesci, J. Lesgourgues, L. Leuzzi, T.I Liaudat, Arthur Loureiro, Juan Francisco Macias-Perez, G. Maggio, M. Magliocchetti, Eugene A. Magnier, C. Mancini, Filippo Mannucci, R. Maoli, C.J.A.P. Martins, Loïc Maurin, Matteo Miluzio, P. Monaco, Claudio Moretti, G Morgante, S. Nadathur, Krishna Naidoo, A. Navarro-Alsina, S Nesseris, F Passalacqua, K. Paterson, Laura Patrizii, A. Pisani, D. Potter, S Quai, M. Radovich, P.-F Rocci, Simone Sacquegna, Martin Sahlén, D. B. Sanders, E Sarpa, Claudia M. Scarlata, J. Schaye, Aurel Schneider, D Sciotti, E. Sellentin, Aleksandar Shulevski, LAURENCE C. SMITH, K Tanidis, CHARLING TAO, G. Testera, R Teyssier, S. Tosi, A. Troja, M. Tucci, Claudia Valieri, Aku Venhola, D. Vergani, G Verza, P Vielzeuf, A. Viitanen, Nicholas A. Walton, John R. Weaver, É. Soubrié, Douglas Scott
9Citations signalées, ce qui n’est pas une note de qualité
166Institutions déclarées
26Pays d’affiliation déclarés
Rattachement africain : it, gb, de, es, ch, tw, jp, nl, sk, be, fr, us, pt, ca, no, dk, fi, ro, cl, at, au, Afrique du Sud, se, uz, mk, ru.
Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Recent observations with the James Webb Space Telescope (JWST) have revealed an interesting population of sources with a compact morphology and a characteristic v-shaped continuum, namely blue at a rest frame λ < 4000 Å and red at longer wavelengths. The nature of these sources, which are called little red dots (LRDs), is still highly debated because it is unclear whether they host active galactic nuclei (AGNs) and their number seems to drop drastically at z < 4. We took advantage of the 63 deg 2 covered by the Euclid Quick Data Release (Q1) to extend the search for LRDs to brighter magnitudes and lower redshifts than what was possible with JWST. This is fundamental for a broader view of the evolution of this peculiar galaxy population. The selection was performed by fitting the available photometric data ( Euclid , the Spitzer Infrared Array Camera (IRAC), and ground-based griz data) with two power laws to retrieve the rest-frame optical and UV slopes consistently over a wide redshift range (i.e. z < 7.6). We then excluded extended objects and possible line emitters and inspected the data visually to remove any imaging artefacts. The final selection included 3341 LRD candidates from z = 0.33 to z = 3.6, 29 of which were also detected in IRAC. The resulting rest-frame UV luminosity function, in contrast with previous JWST studies, shows that the number density of LRD candidates increases from high redshift to z = 1.5–2.5 and decreases at even lower redshifts. The subsample of more robust LRD candidates that are also detected with IRAC show a weaker evolution, however, which is affected by low statistics and limited by the IRAC resolution. The comparison with previous quasar UV luminosity functions shows that LRDs are not the dominant AGN population at z < 4 and M UV < −21. Follow-up studies of these LRD candidates are pivotal to confirm their nature, probe their physical properties, and determine whether they are compatible with JWST sources because the different spatial resolution and wavelength coverage of Euclid and JWST might select different samples of compact sources.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Euclid Quick Data Release (Q1)
- Date Crossref
- 30/06/2026
- Éditeur
- EDP Sciences
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Osservatorio Astronomico di Padova
pays non établi dans la notice
Structure de recherche
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University of Padua
pays non établi dans la notice
Université ou école supérieure
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University of Bristol
pays non établi dans la notice
Université ou école supérieure
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Bristol Robotics Laboratory
pays non établi dans la notice
Structure de recherche
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Roma Tre University
Department of Mathematics and Physics
pays non établi dans la notice
Université ou école supérieure
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Astronomical Observatory of Rome
pays non établi dans la notice
Structure de recherche
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National Institute for Astrophysics
pays non établi dans la notice
Organisme public
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Max Planck Institute for Astronomy
pays non établi dans la notice
Structure de recherche
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Arcetri Astrophysical Observatory
pays non établi dans la notice
Structure de recherche
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Astronomical Observatory of Capodimonte
pays non établi dans la notice
Structure de recherche
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University of Southampton
pays non établi dans la notice
Université ou école supérieure
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Istituto di Radioastronomia di Bologna
pays non établi dans la notice
Organisation à but non lucratif
Osservatorio Astronomico di Padova, University of Padua et University of Bristol, avec 9 autres affiliations. Pays d’affiliation : Afrique du Sud.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.
Les sujets associés
Impact of Light on Environment and HealthAstronomical Observations and Instrumentation