Year: 2025
Type: article
Abstract: This paper presents a search for high redshift galaxies from the Euclid Early Release Observations program ‘Magnifying Lens.’ The 1.5 deg2 area covered by the twin Abell lensing cluster fields is comparable in size to the few other deep near-infrared surveys such as COSMOS, and so provides an opportunity to significantly increase known samples of rare UV-bright galaxies at z ≈ 6–8 (MUV ≲ −22). Beyond their still uncertain role in reionisation, these UV-bright galaxies are ideal laboratories from which to study galaxy formation and constrain the bright-end of the UV luminosity function. Of the 501 994 sources detected from a combined YE, JE, and HE NISP detection image, 168 do not have any appreciable VIS/IE flux. These objects span a range in spectral colours, separated into two classes: 139 extremely red sources; and 29 Lyman-break galaxy candidates. Best-fit redshifts and spectral templates suggest the former is composed of both z ≳ 5 dusty star-forming galaxies and z ≈ 1–3 quiescent systems. The latter is composed of more homogeneous Lyman-break galaxies at z ≈ 6–8. In both cases, contamination by L- and T-type dwarfs cannot be ruled out with Euclid images alone. Additional contamination from instrumental persistence is investigated using a novel time series analysis. This work lays the foundation for future searches within the Euclid Deep Fields, where thousands more z ≳ 6 Lyman-break systems and extremely red sources will be identified.
Authors: J. R. Weaver, S. Taamoli, C. J. R. McPartland, L. Zalesky, N. Allen, S. Toft, D. B. Sanders, H. Atek, R. A. A. Bowler, D. Stern, C. J. Conselice, B. Mobasher, I. Szapudi, P. R. M. Eisenhardt, G. Murphree, I. Valdes, K. Ito, S. Belladitta, P. A. Oesch, S. Serjeant, D. J. Mortlock, N. A. Hatch, M. Kluge, B. Milvang-Jensen, G. Rodighiero, E. Bañados, J. M. Diego, R. Gavazzi, G. Congedo, M. Shuntov, H. Dole, P.-F. Rocci, T. Saifollahi, M. Miluzio, M. Ezziati, A. C. N. Hughes, J.-C. Cuillandre, R. Laureijs, S. Paltani, M. Schirmer, C. Stone, N. Aghanim, B. Altieri, A. Amara, S. Andreon, N. Auricchio, M. Baldi, A. Balestra, S. Bardelli, R. Bender, C. Bodendorf, D. Bonino, E. Branchini, M. Brescia, J. Brinchmann, S. Camera, V. Capobianco, C. Carbone, V. F. Cardone, J. Carretero, S. Casas, F. J. Castander, M. Castellano, S. Cavuoti, A. Cimatti, L. Conversi, Y. Copin, L. Corcione, F. Courbin, H. M. Courtois, A. Da Silva, H. Degaudenzi, A. M. Di Giorgio, J. Dinis, M. Douspis, F. Dubath, X. Dupac, A. Ealet, M. Farina, S. Farrens, S. Ferriol, S. Fotopoulou, M. Frailis, E. Franceschi, P. Franzetti, S. Galeotta, W. Gillard, B. Gillis, C. Giocoli, P. Gómez-Alvarez, A. Grazian, F. Grupp, L. Guzzo, S. V. H. Haugan, J. Hoar, H. Hoekstra, W. Holmes, I. Hook, F. Hormuth, A. Hornstrup, P. Hudelot, K. Jahnke, M. Jhabvala, E. Keihänen, S. Kermiche, A. Kiessling, T. Kitching, B. Kubik, M. Kümmel, M. Kunz, H. Kurki-Suonio, O. Lahav, D. Le Mignant, S. Ligori, P. B. Lilje, V. Lindholm, I. Lloro, D. Maino, E. Maiorano, O. Mansutti, O. Marggraf, K. Markovic, N. Martinet, F. Marulli, R. Massey, D. C. Masters, S. Maurogordato, H. J. McCracken, E. Medinaceli, S. Mei, M. Melchior, Y. Mellier, M. Meneghetti, E. Merlin, G. Meylan, J. J. Mohr, M. Moresco, L. Moscardini, R. Nakajima, R. C. Nichol, S.-M. Niemi, C. Padilla, F. Pasian, K. Pedersen, W. J. Percival, V. Pettorino, S. Pires, G. Polenta, M. Poncet, L. A. Popa, L. Pozzetti, F. Raison, A. Renzi, J. Rhodes, G. Riccio, E. Romelli, M. Roncarelli, E. Rossetti, R. Saglia, D. Sapone, P. Schneider, T. Schrabback, A. Secroun, G. Seidel, S. Serrano, C. Sirignano, G. Sirri, L. Stanco, P. Tallada-Crespí, A. N. Taylor, H. I. Teplitz, I. Tereno, R. Toledo-Moreo, I. Tutusaus, L. Valenziano, T. Vassallo, A. Veropalumbo, Y. Wang, J. Weller, E. Zucca, C. Burigana, G. Castignani, Z. Sakr, V. Scottez, M. Viel, P. Simon, J. Martín-Fleitas, D. Scott
Institutions: University of Massachusetts Amherst, University of Copenhagen, University of Hawaiʻi at Mānoa, University of Hawaii System, Centre National de la Recherche Scientifique, Institut d'Astrophysique de Paris, Sorbonne Université, University of Manchester, California Institute of Technology, Jet Propulsion Laboratory, University of California, Riverside, The University of Tokyo, Max Planck Institute for Astronomy, Osservatorio di Astrofisica e Scienza dello Spazio, National Institute for Astrophysics, The Open University, Imperial College London, University of Nottingham, Max Planck Institute for Extraterrestrial Physics, University of Padua, Osservatorio Astronomico di Padova, Instituto de Física de Cantabria, Aix-Marseille Université, Royal Observatory, University of Edinburgh, Université Paris-Saclay, Institut d'Astrophysique Spatiale, University of Groningen, Observatoire astronomique de Strasbourg, Université de Strasbourg, European Space Agency, European Space Astronomy Centre, Université Paris Cité, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Astrophysique, Instrumentation et Modélisation, Brera Astronomical Observatory, University of Surrey, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, European Space Research and Technology Centre, Université de Montréal, Ludwig-Maximilians-Universität München, University of Bologna, University of Geneva, Port d'Informació Científica, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, RWTH Aachen University, Institute of Space Sciences, Institut d'Estudis Espacials de Catalunya, European Space Research Institute, Lyon 1 Université, Institut National de Physique Nucléaire et de Physique des Particules, Institut de Physique des 2 Infinis de Lyon, École Polytechnique Fédérale de Lausanne, University of Lisbon, Institute of Astrophysics and Space Sciences, Institute for Space Astrophysics and Planetology, University of Bristol
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Aeronautics and Space Administration, European Space Agency, National Research Foundation, Danmarks Grundforskningsfond, Centre National d’Etudes Spatiales, Magyar Tudományos Akadémia, Agenzia Spaziale Italiana, National Astronomical Observatory of Japan, Agenția Spațială Română, Norsk Romsenter, Natural Sciences and Engineering Research Council of Canada, Fundação para a Ciência e a Tecnologia
Award: Cosmic Dawn Center (DAWN)
OpenAlex ID: W6959892510
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