Euclid Quick Data Release (Q1)
Astronomy and Astrophysics, vol. 711, pp. A26
Abstract
We present a catalogue of 497 galaxy-galaxy strong lenses in the Euclid Quick Release 1 data (63 deg 2 ). In the initial 0.45% of Euclid ’s surveys, we double the total number of known lens candidates with space-based imaging. Our catalogue includes 250 grade A candidates, the vast majority of which (243) were previously unpublished. Euclid ’s resolution reveals rare lens configurations of scientific value, including double-source-plane lenses, edge-on lenses, complete Einstein rings, and quadruply imaged lenses. We resolve lenses with small Einstein radii ( θ E < 1″) in large numbers for the first time. These lenses were found through an initial sweep by deep learning models followed by Space Warps citizen scientist inspection, expert vetting, and system-by-system modelling. Our search approach scales straightforwardly to Euclid Data Release 1 and, without changes, would yield approximately 7000 high-confidence (grade A or B) lens candidates by late 2026. Further extrapolating to the complete Euclid Wide Survey implies a likely yield of over 100 000 high-confidence candidates, transforming strong lensing science.
Authors 100
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University of Toronto · University of Manchester
Affiliation as printed
David A. Dunlap Department of Astronomy & Astrophysics, University of Toronto
Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester
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Affiliation as printed
Department of Physics, Oxford University
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Affiliation as printed
Institute of Cosmology and Gravitation, University of Portsmouth
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FHNW University of Applied Sciences and Arts Northwestern Switzerland · University of Portsmouth
Affiliation as printed
Institute of Cosmology and Gravitation, University of Portsmouth
University of Applied Sciences and Arts of Northwestern Switzerland, School of Engineering
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Affiliation as printed
Institute of Cosmology and Gravitation, University of Portsmouth
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Affiliation as printed
Department of Physics, Oxford University
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Affiliation as printed
Institute of Cosmology and Gravitation, University of Portsmouth
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Affiliation as printed
School of Mathematics, Statistics and Physics, Newcastle University
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Istituto Nazionale di Fisica Nucleare, Sezione di Bologna · Osservatorio di Astrofisica e Scienza dello Spazio · National Institute for Astrophysics · University of Bologna
Affiliation as printed
Dipartimento di Fisica e Astronomia “Augusto Righi” – Alma Mater Studiorum Università di Bologna
INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna
INFN-Sezione di Bologna
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University of Milan · National Institute for Astrophysics
Affiliation as printed
Dipartimento di Fisica “Aldo Pontremoli”, Università degli Studi di Milano
INAF-IASF Milano
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Centre National de la Recherche Scientifique · Aix-Marseille Université · Institut d'Astrophysique de Paris · Sorbonne Université
Affiliation as printed
Aix-Marseille Université, CNRS, CNES, LAM
Institut d’Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Université
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Max Planck Institute for Astrophysics · Technical University of Munich
Affiliation as printed
Max-Planck-Institut für Astrophysik
Technical University of Munich, TUM School of Natural Sciences, Physics Department
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Osservatorio di Astrofisica e Scienza dello Spazio · National Institute for Astrophysics · University of Bologna
Affiliation as printed
Dipartimento di Fisica e Astronomia “Augusto Righi” – Alma Mater Studiorum Università di Bologna
INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna
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Max Planck Institute for Astrophysics · Technical University of Munich
Affiliation as printed
Max-Planck-Institut für Astrophysik
Technical University of Munich, TUM School of Natural Sciences, Physics Department
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Osservatorio di Astrofisica e Scienza dello Spazio · National Institute for Astrophysics · University of Bologna
Affiliation as printed
Dipartimento di Fisica e Astronomia “Augusto Righi” – Alma Mater Studiorum Università di Bologna
INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna
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Universidad Politécnica de Cartagena
Affiliation as printed
Departamento Física Aplicada, Universidad Politécnica de Cartagena
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Affiliation as printed
School of Physical Sciences, The Open University
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FHNW University of Applied Sciences and Arts Northwestern Switzerland
Affiliation as printed
University of Applied Sciences and Arts of Northwestern Switzerland, School of Engineering
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Institut de Ciències del Cosmos · Universitat de Barcelona
Affiliation as printed
Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (IEEC-UB)
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Istituto Nazionale di Fisica Nucleare · Astronomical Observatory of Capodimonte · Istituto Nazionale di Fisica Nucleare, Sezione di Napoli · University of Naples Federico II · National Institute for Astrophysics
Affiliation as printed
Department of Physics “E. Pancini”, University Federico II
INAF-Osservatorio Astronomico di Capodimonte
INFN section of Naples
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Astronomical Observatory of Capodimonte · National Institute for Astrophysics
Affiliation as printed
INAF-Osservatorio Astronomico di Capodimonte
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École Polytechnique Fédérale de Lausanne
Affiliation as printed
Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny
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Centre National de la Recherche Scientifique · Université Paris-Saclay · Institut d'Astrophysique Spatiale
Affiliation as printed
Université Paris-Saclay, CNRS, Institut d’astrophysique spatiale
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Max Planck Institute for Extraterrestrial Physics · Ludwig-Maximilians-Universität München
Affiliation as printed
Max Planck Institute for Extraterrestrial Physics
Universitäts-Sternwarte München, Fakultät für Physik, Ludwig-Maximilians-Universität München
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Affiliation as printed
School of Physical Sciences, The Open University
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SLAC National Accelerator Laboratory · Kavli Institute for Particle Astrophysics and Cosmology · Stanford University
Affiliation as printed
Kavli Institute for Particle Astrophysics & Cosmology (KIPAC), Stanford University
SLAC National Accelerator Laboratory
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Inter-University Centre for Astronomy and Astrophysics
Affiliation as printed
The Inter-University Centre for Astronomy and Astrophysics
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Centre National de la Recherche Scientifique · Observatoire astronomique de Strasbourg · Université de Strasbourg
Affiliation as printed
Université de Strasbourg, CNRS, Observatoire astronomique de Strasbourg, UMR 7550
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Max Planck Institute for Extraterrestrial Physics
Affiliation as printed
Max Planck Institute for Extraterrestrial Physics
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Affiliation as printed
Citizen Scientist, Zooniverse c/o University of Oxford
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Affiliation as printed
Citizen Scientist, Zooniverse c/o University of Oxford
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Affiliation as printed
Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy, Northwestern University
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Affiliation as printed
Department of Physics, Oxford University
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European Space Agency · European Space Astronomy Centre
Affiliation as printed
ESAC/ESA
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European Space Agency · European Space Astronomy Centre
Affiliation as printed
ESAC/ESA
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École Polytechnique Fédérale de Lausanne
Affiliation as printed
Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny
SCITAS, Ecole Polytechnique Fédérale de Lausanne (EPFL)
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Affiliation as printed
Department of Astronomy, University of Geneva
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Institució Catalana de Recerca i Estudis Avançats · Institut de Ciències del Cosmos · Universitat de Barcelona
Affiliation as printed
Institució Catalana de Recerca i Estudis Avançats (ICREA)
Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (IEEC-UB)
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Affiliation as printed
David A. Dunlap Department of Astronomy & Astrophysics, University of Toronto
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Affiliation as printed
Institute for Theoretical Particle Physics and Cosmology (TTK), RWTH Aachen University
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Universidad de La Laguna · Instituto de Astrofísica de Canarias
Affiliation as printed
Instituto de Astrofísica de Canarias (IAC); Departamento de Astrofísica, Universidad de La Laguna (ULL)
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Instituto de Física de Cantabria
Affiliation as printed
Instituto de Física de Cantabria
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California Institute of Technology · Infrared Processing and Analysis Center
Affiliation as printed
Caltech/IPAC
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Max Planck Institute for Astrophysics · Technical University of Munich
Affiliation as printed
Max-Planck-Institut für Astrophysik
Technical University of Munich, TUM School of Natural Sciences, Physics Department
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Istituto Nazionale di Fisica Nucleare, Sezione di Bologna · Osservatorio di Astrofisica e Scienza dello Spazio · National Institute for Astrophysics
Affiliation as printed
INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna
INFN-Sezione di Bologna
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Centre National de la Recherche Scientifique · Université de Montpellier · Laboratoire Univers et Particules de Montpellier
Affiliation as printed
Laboratoire univers et particules de Montpellier, Université de Montpellier, CNRS
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Max Planck Institute for Astronomy
Affiliation as printed
Max-Planck-Institut für Astronomie
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Affiliation as printed
ELTE Eötvös Loránd University, Institute of Physics and Astronomy
MTA-CSFK Lendület Large-Scale Structure Research Group
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Konkoly Observatory · HUN-REN Research Centre for Astronomy and Earth Sciences
Affiliation as printed
Konkoly Observatory, HUN-REN CSFK, MTA Centre of Excellence
MTA-CSFK Lendület Large-Scale Structure Research Group
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Affiliation as printed
Dipartimento di Fisica, Sapienza Università di Roma
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University of Liège · Durham University
Affiliation as printed
Department of Physics, Centre for Extragalactic Astronomy, Durham University
Department of Physics, Institute for Computational Cosmology, Durham University
STAR Institute, University of Liège, Quartier Agora
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ETH Zurich · Institute for Particle Physics and Astrophysics
Affiliation as printed
Institute for Particle Physics and Astrophysics, Dept. of Physics, ETH Zurich
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University of Minnesota · University of Groningen
Affiliation as printed
Kapteyn Astronomical Institute, University of Groningen
Minnesota Institute for Astrophysics, University of Minnesota
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Lawrence Berkeley National Laboratory
Affiliation as printed
Lawrence Berkeley National Laboratory
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Affiliation as printed
Institute of Cosmology and Gravitation, University of Portsmouth
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Max Planck Institute for Astrophysics
Affiliation as printed
Max-Planck-Institut für Astrophysik
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Affiliation as printed
STAR Institute, University of Liège, Quartier Agora
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Affiliation as printed
Department of Astronomy, School of Physics and Astronomy, Shanghai Jiao Tong University
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Affiliation as printed
Department of Physics, Oxford University
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Affiliation as printed
School of Physical Sciences, The Open University
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National Astronomical Observatory of Japan
Affiliation as printed
National Astronomical Observatory of Japan
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University of Trento · Arcetri Astrophysical Observatory · University of Florence · National Institute for Astrophysics
Affiliation as printed
Dipartimento di Fisica e Astronomia, Università di Firenze
INAF-Osservatorio Astrofisico di Arcetri
University of Trento
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California Institute of Technology · Infrared Processing and Analysis Center
Affiliation as printed
Caltech/IPAC
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Affiliation as printed
Institute of Cosmology and Gravitation, University of Portsmouth
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Max Planck Institute for Gravitational Physics
Affiliation as printed
Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
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Centre National de la Recherche Scientifique · Université Paris-Saclay · Institut d'Astrophysique Spatiale
Affiliation as printed
Université Paris-Saclay, CNRS, Institut d’astrophysique spatiale
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European Space Agency · European Space Astronomy Centre
Affiliation as printed
ESAC/ESA
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Affiliation as printed
School of Mathematics and Physics, University of Surrey
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Brera Astronomical Observatory · National Institute for Astrophysics
Affiliation as printed
INAF-Osservatorio Astronomico di Brera
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Osservatorio di Astrofisica e Scienza dello Spazio · National Institute for Astrophysics
Affiliation as printed
INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna
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Centre National de la Recherche Scientifique · Université Paris Cité · Commissariat à l'Énergie Atomique et aux Énergies Alternatives · Université Paris-Saclay · Astrophysique, Instrumentation et Modélisation
Affiliation as printed
Université Paris-Saclay, Université Paris Cité, CEA, CNRS, AIM
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Scuola Internazionale Superiore di Studi Avanzati · Trieste Astronomical Observatory · Istituto Nazionale di Fisica Nucleare, Sezione di Trieste · Institute for Fundamental Physics of the Universe · National Institute for Astrophysics
Affiliation as printed
IFPU, Institute for Fundamental Physics of the Universe
INAF-Osservatorio Astronomico di Trieste
INFN, Sezione di Trieste
SISSA, International School for Advanced Studies
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Istituto Nazionale di Fisica Nucleare, Sezione di Bologna · Osservatorio di Astrofisica e Scienza dello Spazio · National Institute for Astrophysics · University of Bologna
Affiliation as printed
Dipartimento di Fisica e Astronomia, Università di Bologna
INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna
INFN-Sezione di Bologna
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Osservatorio Astronomico di Padova · National Institute for Astrophysics
Affiliation as printed
INAF-Osservatorio Astronomico di Padova
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Osservatorio di Astrofisica e Scienza dello Spazio · National Institute for Astrophysics
Affiliation as printed
INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna
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Osservatorio di Astrofisica e Scienza dello Spazio · National Institute for Astrophysics
Affiliation as printed
INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna
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Centre National de la Recherche Scientifique · Commissariat à l'Énergie Atomique et aux Énergies Alternatives · Université Paris-Saclay · Institut d'Astrophysique de Paris · Sorbonne Université · Institut de Physique Théorique
Affiliation as printed
Institut de Physique Théorique, CEA, CNRS, Université Paris-Saclay
Institut d’Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne Université
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Trieste Astronomical Observatory · Institute for Fundamental Physics of the Universe · National Institute for Astrophysics
Affiliation as printed
IFPU, Institute for Fundamental Physics of the Universe
INAF-Osservatorio Astronomico di Trieste
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Affiliation as printed
Space Science Data Center, Italian Space Agency
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Osservatorio Astrofisico di Torino · National Institute for Astrophysics
Affiliation as printed
INAF-Osservatorio Astrofisico di Torino
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Brera Astronomical Observatory · Istituto Nazionale di Fisica Nucleare, Sezione di Genova · University of Genoa · National Institute for Astrophysics
Affiliation as printed
Dipartimento di Fisica, Università di Genova
INAF-Osservatorio Astronomico di Brera
INFN-Sezione di Genova
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Astronomical Observatory of Capodimonte · University of Naples Federico II · National Institute for Astrophysics
Affiliation as printed
Department of Physics “E. Pancini”, University Federico II
INAF-Osservatorio Astronomico di Capodimonte
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Universidade do Porto · Institute of Astrophysics and Space Sciences · Centro de Astrofísica da Universidade do Porto
Affiliation as printed
Faculdade de Ciências da Universidade do Porto
Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP
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Istituto Nazionale di Fisica Nucleare, Sezione di Torino · Osservatorio Astrofisico di Torino · University of Turin · National Institute for Astrophysics
Affiliation as printed
Dipartimento di Fisica, Università degli Studi di Torino
INAF-Osservatorio Astrofisico di Torino
INFN-Sezione di Torino
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Leiden University · European Space Agency · Leiden Observatory · European Space Research and Technology Centre
Affiliation as printed
European Space Agency/ESTEC
Institute Lorentz, Leiden University
Leiden Observatory, Leiden University
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Osservatorio Astrofisico di Torino · National Institute for Astrophysics
Affiliation as printed
INAF-Osservatorio Astrofisico di Torino
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National Institute for Astrophysics
Affiliation as printed
INAF-IASF Milano
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Astronomical Observatory of Rome · Istituto Nazionale di Fisica Nucleare, Sezione di Roma I · National Institute for Astrophysics
Affiliation as printed
INAF-Osservatorio Astronomico di Roma
INFN-Sezione di Roma
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Universitat Autònoma de Barcelona · Port d'Informació Científica · Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
Affiliation as printed
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT)
Port d’Informació Científica, Campus UAB
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Institute of Space Sciences · Institut d'Estudis Espacials de Catalunya · Universitat Politècnica de Catalunya
Affiliation as printed
Institut d’Estudis Espacials de Catalunya (IEEC), Edifici RDIT, Campus UPC
Institute of Space Sciences (ICE, CSIC), Campus UAB
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Astronomical Observatory of Rome · National Institute for Astrophysics
Affiliation as printed
INAF-Osservatorio Astronomico di Roma
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Osservatorio di Astrofisica e Scienza dello Spazio · National Institute for Astrophysics
Affiliation as printed
INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna
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Istituto Nazionale di Fisica Nucleare · Astronomical Observatory of Capodimonte · Istituto Nazionale di Fisica Nucleare, Sezione di Napoli · National Institute for Astrophysics
Affiliation as printed
INAF-Osservatorio Astronomico di Capodimonte
INFN section of Naples
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University of Hawaiʻi at Mānoa · University of Hawaii System
Affiliation as printed
Institute for Astronomy, University of Hawaii
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Affiliation as printed
Dipartimento di Fisica e Astronomia “Augusto Righi” – Alma Mater Studiorum Università di Bologna
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Instituto de Astrofísica de Canarias
Affiliation as printed
Instituto de Astrofísica de Canarias
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Royal Observatory · University of Edinburgh
Affiliation as printed
Institute for Astronomy, University of Edinburgh, Royal Observatory
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Affiliation as printed
Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester
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European Space Agency · European Space Astronomy Centre · European Space Research Institute
Affiliation as printed
ESAC/ESA
European Space Agency/ESRIN
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Lyon 1 Université · Centre National de la Recherche Scientifique · Institut National de Physique Nucléaire et de Physique des Particules · Institut de Physique des 2 Infinis de Lyon
Affiliation as printed
Université Claude Bernard Lyon 1, CNRS/IN2P3, IP2I Lyon, UMR 5822
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