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Euclid preparation LXXIV. Euclidised observations of Hubble Frontier Fields and CLASH galaxy clusters

Lookup NU author(s): James NightingaleORCiD

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Abstract

© The Authors 2025.We present HST2EUCLID, a novel Python code to generate Euclid realistic mock images in the HE, JE, YE, and IE photometric bands based on panchromatic Hubble Space Telescope observations. The software was used to create a simulated database of Euclid images for the 27 galaxy clusters observed during the Cluster Lensing And Supernova survey with Hubble (CLASH) and the Hubble Frontier Fields (HFF) program. Since the mock images were generated from real observations, they incorporate, by construction, all the complexity of the observed galaxy clusters. The simulated Euclid data of the galaxy cluster MACS J0416.1−2403 were then used to explore the possibility of developing strong lensing models based on the Euclid data. In this context, complementary photometric or spectroscopic follow-up campaigns are required to measure the redshifts of multiple images and cluster member galaxies. By Euclidising six parallel blank fields obtained during the HFF program, we provide an estimate of the number of galaxies detectable in Euclid images per deg2 per magnitude bin (number counts) and the distribution of the galaxy sizes. Finally, we present a preview of the Chandra Deep Field South that will be observed during the Euclid Deep Survey and two examples of galaxy-scale strong lensing systems residing in regions of the sky covered by the Euclid Wide Survey. The methodology developed in this work lends itself to several additional applications, as simulated Euclid fields based on HST (or JWST) imaging with extensive spectroscopic information can be used to validate the feasibility of legacy science cases or to train deep learning techniques in advance, thus preparing for a timely exploitation of the Euclid Survey data.


Publication metadata

Author(s): Bergamini P, Meneghetti M, Angora G, Bazzanini L, Rosati P, Grillo C, Lombardi M, Abriola D, Mercurio A, Calura F, Despali G, Diego JM, Gavazzi R, Hudelot P, Leuzzi L, Mahler G, Merlin E, Scarlata C, Aghanim N, Altieri B, Amara A, Andreon S, Auricchio N, Baccigalupi C, Baldi M, Bardelli S, Bender R, Bodendorf C, Bonino D, Branchini E, Brescia M, Brinchmann J, Camera S, Capobianco V, Carbone C, Carretero J, Casas S, Castander FJ, Castellano M, Castignani G, Cavuoti S, Cimatti A, Colodro-Conde C, Congedo G, Conselice CJ, Conversi L, Copin Y, Courbin F, Courtois HM, Cropper M, Da Silva A, Degaudenzi H, De Lucia G, Di Giorgio AM, Dinis J, Douspis M, Dubath F, Dupac X, Dusini S, Farina M, Farrens S, Ferriol S, Frailis M, Franceschi E, Fumana M, Galeotta S, Garilli B, George K, Gillis B, Giocoli C, Grazian A, Grupp F, Guzzo L, Haugan SVH, Holmes W, Hook I, Hormuth F, Hornstrup A, Jahnke K, Keihanen E, Kermiche S, Kiessling A, Kilbinger M, Kubik B, Kummel M, Kunz M, Kurki-Suonio H, Laureijs R, Ligori S, Lilje PB, Lindholm V, Lloro I, Mainetti G, Maino D, Maiorano E, Mansutti O, Marggraf O, Markovic K, Martinelli M, Martinet N, Marulli F, Massey R, Maurogordato S, Medinaceli E, Mei S, Mellier Y, Meylan G, Moresco M, Moscardini L, Munari E, Nakajima R, Neissner C, Niemi S-M, Nightingale JW, Padilla C, Paltani S, Pasian F, Pedersen K, Pettorino V, Pires S, Polenta G, Poncet M, Popa LA, Pozzetti L, Raison F, Rebolo R, Renzi A, Rhodes J, Riccio G, Romelli E, Roncarelli M, Rossetti E, Saglia R, Sakr Z, Sanchez AG, Sapone D, Sartoris B, Schirmer M, Schneider P, Secroun A, Sefusatti E, Seidel G, Serrano S, Sirignano C, Sirri G, Stanco L, Steinwagner J, Tallada-Crespi P, Teplitz HI, Tereno I, Toledo-Moreo R, Torradeflot F, Tutusaus I, Valenziano L, Vassallo T, Verdoes Kleijn G, Veropalumbo A, Wang Y, Weller J, Zamorani G, Zucca E, Biviano A, Bolzonella M, Boucaud A, Bozzo E, Burigana C, Calabrese M, Di Ferdinando D, Escartin Vigo JA, Farinelli R, Gracia-Carpio J, Mauri N, Scottez V, Tenti M, Viel M, Wiesmann M, Akrami Y, Allevato V, Anselmi S, Ballardini M, Bethermin M, Blanchard A, Blot L, Borgani S, Borlaff AS, Bruton S, Cabanac R, Calabro A, Canas-Herrera G, Cappi A, Carvalho CS, Castro T, Chambers KC, Contarini S, Contini T, Cooray AR, Cucciati O, De Caro B, Desprez G, Diaz-Sanchez A, Di Domizio S, Dole H, Escoffier S, Ferrari AG, Ferrero I, Finelli F, Fornari F, Gabarra L, Ganga K, Garcia-Bellido J, Gautard V, Gaztanaga E, Giacomini F, Gozaliasl G, Hall A, Hildebrandt H, Hjorth J, Huertas-Company M, Jimenez Munoz A, Kajava JJE, Kansal V, Karagiannis D, Kirkpatrick CC, Legrand L, Libet G, Loureiro A, Maggio G, Magliocchetti M, Mancini C, Mannucci F, Maoli R, Martins CJAP, Matthew S, Maurin L, Metcalf RB, Monaco P, Moretti C, Morgante G, Walton NA, Odier J, Patrizii L, Pezzotta A, Pontinen M, Popa V, Porciani C, Potter D, Risso I, Rocci P-F, Sahlen M, Schneider A, Sereno M, Simon P, Spurio Mancini A, Stanford SA, Tao C, Testera G, Teyssier R, Toft S, Tosi S, Troja A, Tucci M, Valieri C, Valiviita J, Vergani D, Verza G

Publication type: Article

Publication status: Published

Journal: Astronomy and Astrophysics

Year: 2025

Volume: 702

Print publication date: 01/10/2025

Online publication date: 14/10/2025

Acceptance date: 16/06/2025

Date deposited: 14/11/2025

ISSN (print): 0004-6361

ISSN (electronic): 1432-0746

Publisher: EDP Sciences

URL: https://doi.org/10.1051/0004-6361/202553984

DOI: 10.1051/0004-6361/202553984


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Funding

Funder referenceFunder name
Austrian Forschungsförderungsgesellschaft funded through BMK
Agenzia Spaziale Italiana
Belgian Science Policy
Deutsches Zentrum für Luft- und Raumfahrt
Canadian Euclid Consortium
DTU Space
European Space Agency
French Centre National d’Etudes Spatiales
Fundação para a Ciência e a Tecnologia
Hungarian Academy of Sciences
National Aeronautics and Space Administration
National Astronomical Observatory of Japan
Ministerio de Ciencia, Innovación y Universidades
Niels Bohr Institute
Netherlandse Onderzoekschool Voor Astronomie
Norwegian Space Agency
Romanian Space Agency
PRIN-MIUR 2017WSCC32 and 2020SKSTHZ
State Secretariat for Education, Research, and Innovation (SERI) at the Swiss Space Office (SSO)
Research Council of Finland
United Kingdom Space Agency

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