Euclid Quick Data Release (Q1): The Strong Lensing Discovery Engine A -- System overview and lens catalogue
Astrophysics of Galaxies
2025-03-20 v1
Abstract
We present a catalogue of 497 galaxy-galaxy strong lenses in the Euclid Quick Release 1 data (63 deg). 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 Our catalogue includes 250 grade A candidates, the vast majority of which (243) were previously unpublished.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 () in large numbers for the first time. These lenses are 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 100000 high-confidence candidates, transforming strong lensing science.
Keywords
Cite
@article{arxiv.2503.15324,
title = {Euclid Quick Data Release (Q1): The Strong Lensing Discovery Engine A -- System overview and lens catalogue},
author = {Euclid Collaboration and M. Walmsley and P. Holloway and N. E. P. Lines and K. Rojas and T. E. Collett and A. Verma and T. Li and J. W. Nightingale and G. Despali and S. Schuldt and R. Gavazzi and A. Melo and R. B. Metcalf and I. T. Andika and L. Leuzzi and A. Manjón-García and R. Pearce-Casey and S. H. Vincken and J. Wilde and V. Busillo and C. Tortora and J. A. Acevedo Barroso and H. Dole and L. R. Ecker and J. Pearson and P. J. Marshall and A. More and T. Saifollahi and J. Gracia-Carpio and E. Baeten and C. Cornen and L. C. Johnson and C. Macmillan and S. Kruk and K. A. Remmelgas and B. Clément and H. Degaudenzi and F. Courbin and J. Bovy and S. Casas and H. Dannerbauer and J. M. Diego and K. Finner and A. Galan and C. Giocoli and N. B. Hogg and K. Jahnke and J. Katona and A. Kovács and C. De Leo and G. Mahler and M. Millon and B. C. Nagam and P. Nugent and A. Sainz de Murieta and C. M. O'Riordan and D. Sluse and A. Sonnenfeld and C. Spiniello and S. Serjeant and T. T. Thai and L. Ulivi and G. L. Walth and L. Weisenbach and M. Zumalacarregui and N. Aghanim and B. Altieri and A. Amara and S. Andreon and N. Auricchio and H. Aussel and C. Baccigalupi and M. Baldi and A. Balestra and S. Bardelli and P. Battaglia and F. Bernardeau and A. Biviano and A. Bonchi and D. Bonino and E. Branchini and M. Brescia and J. Brinchmann and S. Camera and G. Cañas-Herrera and V. Capobianco and C. Carbone and V. F. Cardone and J. Carretero and F. J. Castander and M. Castellano and G. Castignani and S. Cavuoti and K. C. Chambers and A. Cimatti and C. Colodro-Conde and G. Congedo and C. J. Conselice and L. Conversi and Y. Copin and L. Corcione and H. M. Courtois and M. Cropper and A. Da Silva and G. De Lucia and A. M. Di Giorgio and C. Dolding and F. Dubath and C. A. J. Duncan and X. Dupac and A. Ealet and S. Escoffier and M. Fabricius and M. Farina and R. Farinelli and F. Faustini and F. Finelli and S. Fotopoulou and M. Frailis and E. Franceschi and M. Fumana and S. Galeotta and K. George and W. Gillard and B. Gillis and P. Gómez-Alvarez and B. R. Granett and A. Grazian and F. Grupp and L. Guzzo and S. Gwyn and S. V. H. Haugan and H. Hoekstra and W. Holmes and I. M. Hook and F. Hormuth and A. Hornstrup and P. Hudelot and M. Jhabvala and B. Joachimi and E. Keihänen and S. Kermiche and A. Kiessling and B. Kubik and M. Kümmel and M. Kunz and H. Kurki-Suonio and O. Lahav and Q. Le Boulc'h and A. M. C. Le Brun and D. Le Mignant and S. Ligori and P. B. Lilje and V. Lindholm and I. Lloro and G. Mainetti and D. Maino and E. Maiorano and O. Mansutti and S. Marcin and O. Marggraf and M. Martinelli and N. Martinet and F. Marulli and R. Massey and S. Maurogordato and H. J. McCracken and E. Medinaceli and S. Mei and Y. Mellier and M. Meneghetti and E. Merlin and G. Meylan and A. Mora and M. Moresco and L. Moscardini and R. Nakajima and C. Neissner and R. C. Nichol and S. -M. Niemi and C. Padilla and S. Paltani and F. Pasian and K. Pedersen and W. J. Percival and V. Pettorino and S. Pires and G. Polenta and M. Poncet and L. A. Popa and L. Pozzetti and F. Raison and R. Rebolo and A. Renzi and J. Rhodes and G. Riccio and E. Romelli and M. Roncarelli and R. Saglia and Z. Sakr and A. G. Sánchez and D. Sapone and B. Sartoris and J. A. Schewtschenko and M. Schirmer and P. Schneider and T. Schrabback and A. Secroun and G. Seidel and M. Seiffert and S. Serrano and P. Simon and C. Sirignano and G. Sirri and A. Spurio Mancini and L. Stanco and J. Steinwagner and P. Tallada-Crespí and A. N. Taylor and I. Tereno and N. Tessore and S. Toft and R. Toledo-Moreo and F. Torradeflot and I. Tutusaus and E. A. Valentijn and L. Valenziano and J. Valiviita and T. Vassallo and G. Verdoes Kleijn and A. Veropalumbo and Y. Wang and J. Weller and A. Zacchei and G. Zamorani and F. M. Zerbi and E. Zucca and V. Allevato and M. Ballardini and M. Bolzonella and E. Bozzo and C. Burigana and R. Cabanac and A. Cappi and D. Di Ferdinando and J. A. Escartin Vigo and L. Gabarra and M. Huertas-Company and J. Martín-Fleitas and S. Matthew and N. Mauri and A. Pezzotta and M. Pöntinen and C. Porciani and I. Risso and V. Scottez and M. Sereno and M. Tenti and M. Viel and M. Wiesmann and Y. Akrami and S. Anselmi and M. Archidiacono and F. Atrio-Barandela and C. Benoist and K. Benson and P. Bergamini and D. Bertacca and M. Bethermin and L. Blot and S. Borgani and M. L. Brown and S. Bruton and A. Calabro and B. Camacho Quevedo and F. Caro and C. S. Carvalho and T. Castro and Y. Charles and F. Cogato and A. R. Cooray and O. Cucciati and S. Davini and F. De Paolis and G. Desprez and A. Díaz-Sánchez and J. J. Diaz and S. Di Domizio and A. Enia and Y. Fang and A. G. Ferrari and A. Finoguenov and A. Fontana and A. Franco and K. Ganga and J. García-Bellido and T. Gasparetto and V. Gautard and E. Gaztanaga and F. Giacomini and G. Gozaliasl and M. Guidi and C. M. Gutierrez and A. Hall and W. G. Hartley and S. Hemmati and C. Hernández-Monteagudo and H. Hildebrandt and J. Hjorth and J. J. E. Kajava and Y. Kang and V. Kansal and D. Karagiannis and K. Kiiveri and C. C. Kirkpatrick and J. Le Graet and L. Legrand and M. Lembo and F. Lepori and G. Leroy and G. F. Lesci and J. Lesgourgues and T. I. Liaudat and A. Loureiro and J. Macias-Perez and G. Maggio and M. Magliocchetti and E. A. Magnier and F. Mannucci and R. Maoli and C. J. A. P. Martins and L. Maurin and M. Miluzio and P. Monaco and C. Moretti and G. Morgante and C. Murray and S. Nadathur and K. Naidoo and A. Navarro-Alsina and S. Nesseris and F. Passalacqua and K. Paterson and L. Patrizii and A. Pisani and D. Potter and S. Quai and M. Radovich and P. -F. Rocci and S. Sacquegna and M. Sahlén and D. B. Sanders and E. Sarpa and C. Scarlata and J. Schaye and A. Schneider and D. Sciotti and E. Sellentin and F. Shankar and L. C. Smith and K. Tanidis and G. Testera and R. Teyssier and S. Tosi and A. Troja and M. Tucci and C. Valieri and A. Venhola and D. Vergani and G. Vernardos and G. Verza and P. Vielzeuf and N. A. Walton and D. Scott},
journal= {arXiv preprint arXiv:2503.15324},
year = {2025}
}
Comments
Data: https://doi.org/10.5281/zenodo.15003116. Paper submitted as part of the A&A Special Issue `Euclid Quick Data Release (Q1)'. 20 pages, 11 figures, plus appendices