pith. machine review for the scientific record. sign in

arxiv: 2601.10709 · v1 · submitted 2026-01-15 · 🌌 astro-ph.GA · astro-ph.CO

Recognition: unknown

Euclid preparation. 3D reconstruction of the cosmic web with simulated Euclid Deep spectroscopic samples

Euclid Collaboration: K. Kraljic (1) , C. Laigle (2) , M. Balogh (3 , 4) , P. Jablonka (5) , U. Kuchner (6) , N. Malavasi (7) , F. Sarron (8
show 1034 more authors
9) C. Pichon (2 10) G. De Lucia (11) M. Bethermin (1) F. Durret (12) M. Fumagalli (11 13) C. Gouin (2) M. Magliocchetti (14) J. G. Sorce (15 16) O. Cucciati (17) F. Fontanot (11 18) M. Hirschmann (19) Y. Kang (20) M. Spinelli (21 11 22) N. Aghanim (16) A. Amara (23) S. Andreon (24) N. Auricchio (17) C. Baccigalupi (18 25 26) M. Baldi (27 17 28) S. Bardelli (17) A. Biviano (11 E. Branchini (29 30 24) M. Brescia (31 32) J. Brinchmann (33 34 35) S. Camera (36 37 38) G. Ca\~nas-Herrera (39 40 41) V. Capobianco (38) C. Carbone (42) J. Carretero (43 44) R. Casas (45 46) S. Casas (47) F. J. Castander (46 45) M. Castellano (48) G. Castignani (17) S. Cavuoti (32 49) K. C. Chambers (50) A. Cimatti (51) C. Colodro-Conde (52) G. Congedo (53) C. J. Conselice (54) L. Conversi (55 56) Y. Copin (57) F. Courbin (58 59) H. M. Courtois (60) A. Da Silva (61 62) H. Degaudenzi (20) S. de la Torre (63) H. Dole (16) M. Douspis (16) F. Dubath (20) C. A. J. Duncan (53 54) X. Dupac (56) S. Dusini (64) S. Escoffier (65) M. Farina (14) R. Farinelli (17) S. Ferriol (57) F. Finelli (17 66) P. Fosalba (45 N. Fourmanoit (65) M. Frailis (11) E. Franceschi (17) M. Fumana (42) S. Galeotta (11) K. George (67) W. Gillard (65) B. Gillis (53) C. Giocoli (17 J. Gracia-Carpio (7) A. Grazian (68) F. Grupp (7 67) S. V. H. Haugan (69) W. Holmes (70) F. Hormuth (71) A. Hornstrup (72 73) K. Jahnke (74) M. Jhabvala (75) B. Joachimi (76) E. Keih\"anen (77) S. Kermiche (65) A. Kiessling (70) M. Kilbinger (78) B. Kubik (57) M. K\"ummel (67) M. Kunz (79) H. Kurki-Suonio (80 81) A. M. C. Le Brun (82) S. Ligori (38) P. B. Lilje (69) V. Lindholm (80 I. Lloro (83) G. Mainetti (84) D. Maino (85 42 86) E. Maiorano (17) O. Mansutti (11) S. Marcin (87) O. Marggraf (88) M. Martinelli (48 89) N. Martinet (63) F. Marulli (90 R. Massey (91) S. Maurogordato (21) E. Medinaceli (17) S. Mei (92 93) Y. Mellier (12 2) M. Meneghetti (17 E. Merlin (48) G. Meylan (4) A. Mora (94) M. Moresco (90 17) L. Moscardini (90 R. Nakajima (88) C. Neissner (95 S.-M. Niemi (39) C. Padilla (95) S. Paltani (20) F. Pasian (11) K. Pedersen (96) W. J. Percival (4 3 97) V. Pettorino (39) S. Pires (78) G. Polenta (98) M. Poncet (99) L. A. Popa (100) L. Pozzetti (17) F. Raison (7) R. Rebolo (52 101 102) A. Renzi (103 64) J. Rhodes (70) G. Riccio (32) E. Romelli (11) M. Roncarelli (17) C. Rosset (92) E. Rossetti (27) R. Saglia (67 7) Z. Sakr (104 105 106) A. G. S\'anchez (7) D. Sapone (107) B. Sartoris (67 11) P. Schneider (88) T. Schrabback (108) M. Scodeggio (42) A. Secroun (65) E. Sefusatti (11 25) G. Seidel (74) M. Seiffert (70) S. Serrano (45 109 P. Simon (88) C. Sirignano (103 G. Sirri (28) L. Stanco (64) J. Steinwagner (7) P. Tallada-Cresp\'i (43 A. N. Taylor (53) H. I. Teplitz (110) I. Tereno (61 111) N. Tessore (76) S. Toft (112 113) R. Toledo-Moreo (114) F. Torradeflot (44 43) I. Tutusaus (105) L. Valenziano (17 J. Valiviita (80 T. Vassallo (67 G. Verdoes Kleijn (115) A. Veropalumbo (24 29) D. Vibert (63) Y. Wang (110) J. Weller (67 A. Zacchei (11 G. Zamorani (17) E. Zucca (17) V. Allevato (32) M. Ballardini (116 117 M. Bolzonella (17) E. Bozzo (20) C. Burigana (118 R. Cabanac (105) M. Calabrese (119 42) A. Cappi (17 21) D. Di Ferdinando (28) J. A. Escartin Vigo (7) L. Gabarra (120) W. G. Hartley (20) J. Mart\'in-Fleitas (121) S. Matthew (53) N. Mauri (51 R. B. Metcalf (90 A. A. Nucita (122 123 124) A. Pezzotta (125 M. P\"ontinen (80) C. Porciani (88) I. Risso (126) V. Scottez (12 127) M. Sereno (17 M. Tenti (28) M. Viel (18 26 128) M. Wiesmann (69) Y. Akrami (129 130) S. Alvi (116) I. T. Andika (131 132) S. Anselmi (64 103 133) M. Archidiacono (85 F. Atrio-Barandela (134) A. Balaguera-Antolinez (52 135) P. Bergamini (85 D. Bertacca (103 68 A. Blanchard (105) L. Blot (136 82) H. B\"ohringer (7 137 138) S. Borgani (139 18 M. L. Brown (54) S. Bruton (140) A. Calabro (48) B. Camacho Quevedo (18 45 F. Caro (48) C. S. Carvalho (111) T. Castro (11 R. Chary (110 141) F. Cogato (90 S. Conseil (57) T. Contini (105) A. R. Cooray (142) S. Davini (30) F. De Paolis (122 G. Desprez (115) A. D\'iaz-S\'anchez (143) J. J. Diaz (52) S. Di Domizio (29 30) J. M. Diego (144) P. Dimauro (145 48) P.-A. Duc (1) A. Enia (27 Y. Fang (67) A. G. Ferrari (28) A. Finoguenov (80) A. Fontana (48) A. Franco (123 122 K. Ganga (92) J. Garc\'ia-Bellido (129) T. Gasparetto (11) R. Gavazzi (63 E. Gaztanaga (46 146) F. Giacomini (28) F. Gianotti (17) G. Gozaliasl (147 80) M. Guidi (27 C. M. Gutierrez (135) A. Hall (53) H. Hildebrandt (148) J. Hjorth (96) S. Joudaki (43) J. J. E. Kajava (149 150) V. Kansal (151 152) D. Karagiannis (116 K. Kiiveri (77) C. C. Kirkpatrick (77) S. Kruk (56) M. Lattanzi (117) V. Le Brun (63) J. Le Graet (65) L. Legrand (153 154) M. Lembo (2) F. Lepori (155) G. Leroy (156 91) G. F. Lesci (90 J. Lesgourgues (47) L. Leuzzi (17) T. I. Liaudat (157) S. J. Liu (14) A. Loureiro (158 159) J. Macias-Perez (160) G. Maggio (11) E. A. Magnier (50) F. Mannucci (161) R. Maoli (162 C. J. A. P. Martins (163 33) L. Maurin (16) M. Miluzio (56 164) P. Monaco (139 C. Moretti (26 128 G. Morgante (17) S. Nadathur (146) K. Naidoo (146) A. Navarro-Alsina (88) S. Nesseris (129) L. Pagano (116 117) F. Passalacqua (103 K. Paterson (74) L. Patrizii (28) A. Pisani (65) D. Potter (155) S. Quai (90 M. Radovich (68) P.-F. Rocci (16) G. Rodighiero (103 68) S. Sacquegna (122 M. Sahl\'en (165) D. B. Sanders (50) A. Schneider (155) D. Sciotti (48 E. Sellentin (166 L. C. Smith (167) K. Tanidis (120) C. Tao (65) G. Testera (30) R. Teyssier (168) S. Tosi (29 A. Troja (103 M. Tucci (20) C. Valieri (28) A. Venhola (169) D. Vergani (17) G. Verza (170) P. Vielzeuf (65) N. A. Walton (167) ((1) Universit\'e de Strasbourg CNRS Observatoire astronomique de Strasbourg UMR 7550 67000 Strasbourg France (2) Institut d'Astrophysique de Paris UMR 7095 Sorbonne Universit\'e 98 bis boulevard Arago 75014 Paris (3) Department of Physics Astronomy University of Waterloo Waterloo Ontario N2L 3G1 Canada (4) Waterloo Centre for Astrophysics (5) Institute of Physics Laboratory of Astrophysics Ecole Polytechnique F\'ed\'erale de Lausanne (EPFL) Observatoire de Sauverny 1290 Versoix Switzerland (6) School of Physics University of Nottingham University Park Nottingham NG7 2RD UK (7) Max Planck Institute for Extraterrestrial Physics Giessenbachstr. 1 85748 Garching Germany (8) Institut de Recherche en Informatique de Toulouse (IRIT) Universit\'e de Toulouse Toulouse INP UT3 31062 Toulouse (9) Laboratoire MCD Centre de Biologie Int\'egrative (CBI) (10) Kyung Hee University Dept. of Astronomy \& Space Science Yongin-shi Gyeonggi-do 17104 Republic of Korea (11) INAF-Osservatorio Astronomico di Trieste Via G. B. Tiepolo 11 34143 Trieste Italy (12) Institut d'Astrophysique de Paris 98bis Boulevard Arago 75014 Paris (13) Dipartimento di Fisica "G. Occhialini" Universit\`a degli Studi di Milano Bicocca Piazza della Scienza 3 20126 Milano (14) INAF-Istituto di Astrofisica e Planetologia Spaziali via del Fosso del Cavaliere 100 00100 Roma (15) Univ. Lille Centrale Lille UMR 9189 CRIStAL 59000 Lille (16) Universit\'e Paris-Saclay Institut d'astrophysique spatiale 91405 Orsay (17) INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna Via Piero Gobetti 93/3 40129 Bologna (18) IFPU Institute for Fundamental Physics of the Universe via Beirut 2 34151 Trieste (19) Institute of Physics Laboratory for Galaxy Evolution Ecole Polytechnique F\'ed\'erale de Lausanne CH-1290 Versoix (20) Department of Astronomy University of Geneva ch. d'Ecogia 16 (21) Universit\'e C\^ote d'Azur Observatoire de la C\^ote d'Azur Laboratoire Lagrange Bd de l'Observatoire CS 34229 06304 Nice cedex 4 (22) Department of Physics University of the Western Cape Bellville Cape Town 7535 South Africa (23) School of Mathematics Physics University of Surrey Guildford Surrey GU2 7XH (24) INAF-Osservatorio Astronomico di Brera Via Brera 28 20122 Milano (25) INFN Sezione di Trieste Via Valerio 2 34127 Trieste TS (26) SISSA International School for Advanced Studies Via Bonomea 265 34136 Trieste TS (27) Dipartimento di Fisica e Astronomia Universit\`a di Bologna Via Gobetti 93/2 (28) INFN-Sezione di Bologna Viale Berti Pichat 6/2 40127 Bologna (29) Dipartimento di Fisica Universit\`a di Genova Via Dodecaneso 33 16146 Genova (30) INFN-Sezione di Genova (31) Department of Physics "E. Pancini" University Federico II Via Cinthia 6 80126 Napoli (32) INAF-Osservatorio Astronomico di Capodimonte Via Moiariello 16 80131 Napoli (33) Instituto de Astrof\'isica e Ci\^encias do Espa\c{c}o Universidade do Porto CAUP Rua das Estrelas PT4150-762 Porto Portugal (34) Faculdade de Ci\^encias da Universidade do Porto Rua do Campo de Alegre 4150-007 Porto (35) European Southern Observatory Karl-Schwarzschild-Str. 2 (36) Dipartimento di Fisica Universit\`a degli Studi di Torino Via P. Giuria 1 10125 Torino (37) INFN-Sezione di Torino (38) INAF-Osservatorio Astrofisico di Torino Via Osservatorio 20 10025 Pino Torinese (TO) (39) European Space Agency/ESTEC Keplerlaan 1 2201 AZ Noordwijk The Netherlands (40) Institute Lorentz Leiden University Niels Bohrweg 2 2333 CA Leiden (41) Leiden Observatory Einsteinweg 55 2333 CC Leiden (42) INAF-IASF Milano Via Alfonso Corti 12 20133 Milano (43) Centro de Investigaciones Energ\'eticas Medioambientales y Tecnol\'ogicas (CIEMAT) Avenida Complutense 40 28040 Madrid Spain (44) Port d'Informaci\'o Cient\'ifica Campus UAB C. Albareda s/n 08193 Bellaterra (Barcelona) (45) Institut d'Estudis Espacials de Catalunya (IEEC) Edifici RDIT Campus UPC 08860 Castelldefels Barcelona (46) Institute of Space Sciences (ICE CSIC) Carrer de Can Magrans s/n 08193 Barcelona (47) Institute for Theoretical Particle Physics Cosmology (TTK) RWTH Aachen University 52056 Aachen (48) INAF-Osservatorio Astronomico di Roma Via Frascati 33 00078 Monteporzio Catone (49) INFN section of Naples (50) Institute for Astronomy University of Hawaii 2680 Woodlawn Drive Honolulu HI 96822 USA (51) Dipartimento di Fisica e Astronomia "Augusto Righi" - Alma Mater Studiorum Universit\`a di Bologna (52) Instituto de Astrof\'isica de Canarias E-38205 La Laguna Tenerife (53) Institute for Astronomy University of Edinburgh Royal Observatory Blackford Hill Edinburgh EH9 3HJ (54) Jodrell Bank Centre for Astrophysics Department of Physics University of Manchester Oxford Road Manchester M13 9PL (55) European Space Agency/ESRIN Largo Galileo Galilei 1 00044 Frascati Roma (56) ESAC/ESA Camino Bajo del Castillo s/n. Urb. Villafranca del Castillo 28692 Villanueva de la Ca\~nada Madrid (57) Universit\'e Claude Bernard Lyon 1 CNRS/IN2P3 IP2I Lyon UMR 5822 Villeurbanne F-69100 (58) Institut de Ci\`encies del Cosmos (ICCUB) Universitat de Barcelona (IEEC-UB) Mart\'i i Franqu\`es 1 08028 Barcelona (59) Instituci\'o Catalana de Recerca i Estudis Avan\c{c}ats (ICREA) Passeig de Llu\'is Companys 23 08010 Barcelona (60) UCB Lyon 1 IUF 4 rue Enrico Fermi 69622 Villeurbanne (61) Departamento de F\'isica Faculdade de Ci\^encias Universidade de Lisboa Edif\'icio C8 Campo Grande PT1749-016 Lisboa (62) Instituto de Astrof\'isica e Ci\^encias do Espa\c{c}o 1749-016 Lisboa (63) Aix-Marseille Universit\'e CNES LAM Marseille (64) INFN-Padova Via Marzolo 8 35131 Padova (65) Aix-Marseille Universit\'e CPPM (66) INFN-Bologna Via Irnerio 46 40126 Bologna (67) Universit\"ats-Sternwarte M\"unchen Fakult\"at f\"ur Physik Ludwig-Maximilians-Universit\"at M\"unchen Scheinerstr. 1 81679 M\"unchen (68) INAF-Osservatorio Astronomico di Padova Via dell'Osservatorio 5 35122 Padova (69) Institute of Theoretical Astrophysics University of Oslo P.O. Box 1029 Blindern 0315 Oslo Norway (70) Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Drive Pasadena CA 91109 (71) Felix Hormuth Engineering Goethestr. 17 69181 Leimen (72) Technical University of Denmark Elektrovej 327 2800 Kgs. Lyngby Denmark (73) Cosmic Dawn Center (DAWN) (74) Max-Planck-Institut f\"ur Astronomie K\"onigstuhl 17 69117 Heidelberg (75) NASA Goddard Space Flight Center Greenbelt MD 20771 (76) Department of Physics University College London Gower Street London WC1E 6BT (77) Department of Physics Helsinki Institute of Physics Gustaf H\"allstr\"omin katu 2 University of Helsinki 00014 Helsinki Finland (78) Universit\'e Paris-Saclay Universit\'e Paris Cit\'e CEA AIM 91191 Gif-sur-Yvette (79) Universit\'e de Gen\`eve D\'epartement de Physique Th\'eorique Centre for Astroparticle Physics 24 quai Ernest-Ansermet CH-1211 Gen\`eve 4 (80) Department of Physics P.O. Box 64 (81) Helsinki Institute of Physics (82) Laboratoire d'etude de l'Univers et des phenomenes eXtremes Observatoire de Paris Universit\'e PSL 92190 Meudon (83) SKAO Jodrell Bank Lower Withington Macclesfield SK11 9FT (84) Centre de Calcul de l'IN2P3/CNRS 21 avenue Pierre de Coubertin 69627 Villeurbanne Cedex (85) Dipartimento di Fisica "Aldo Pontremoli" Universit\`a degli Studi di Milano Via Celoria 16 (86) INFN-Sezione di Milano (87) University of Applied Sciences Arts of Northwestern Switzerland School of Computer Science 5210 Windisch (88) Universit\"at Bonn Argelander-Institut f\"ur Astronomie Auf dem H\"ugel 71 53121 Bonn (89) INFN-Sezione di Roma Piazzale Aldo Moro 2 - c/o Dipartimento di Fisica Edificio G. Marconi 00185 Roma (90) Dipartimento di Fisica e Astronomia "Augusto Righi" - Alma Mater Studiorum Universit\`a di Bologna via Piero Gobetti 93/2 (91) Department of Physics Institute for Computational Cosmology Durham University South Road Durham DH1 3LE (92) Universit\'e Paris Cit\'e Astroparticule et Cosmologie 75013 Paris (93) CNRS-UCB International Research Laboratory Centre Pierre Bin\'etruy IRL2007 CPB-IN2P3 Berkeley (94) Telespazio UK S.L. for European Space Agency (ESA) Urbanizacion Villafranca del Castillo Villanueva de la Ca\~nada 28692 Madrid (95) Institut de F\'isica d'Altes Energies (IFAE) The Barcelona Institute of Science Technology (96) DARK Niels Bohr Institute University of Copenhagen Jagtvej 155 2200 Copenhagen (97) Perimeter Institute for Theoretical Physics Ontario N2L 2Y5 (98) Space Science Data Center Italian Space Agency via del Politecnico snc 00133 Roma (99) Centre National d'Etudes Spatiales -- Centre spatial de Toulouse 18 avenue Edouard Belin 31401 Toulouse Cedex 9 (100) Institute of Space Science Str. Atomistilor nr. 409 M\u{a}gurele Ilfov 077125 Romania (101) Consejo Superior de Investigaciones Cientificas Calle Serrano 117 28006 Madrid (102) Universidad de La Laguna Dpto. Astrof\'i sica E-38206 La Laguna (103) Dipartimento di Fisica e Astronomia "G. Galilei" Universit\`a di Padova (104) Institut f\"ur Theoretische Physik University of Heidelberg Philosophenweg 16 69120 Heidelberg (105) Institut de Recherche en Astrophysique et Plan\'etologie (IRAP) UPS 14 Av. Edouard Belin 31400 Toulouse (106) Universit\'e St Joseph Faculty of Sciences Beirut Lebanon (107) Departamento de F\'isica FCFM Universidad de Chile Blanco Encalada 2008 Santiago Chile (108) Universit\"at Innsbruck Institut f\"ur Astro- und Teilchenphysik Technikerstr. 25/8 6020 Innsbruck Austria (109) Satlantis University Science Park Sede Bld 48940 Leioa-Bilbao (110) Infrared Processing Analysis Center CA 91125 (111) Instituto de Astrof\'isica e Ci\^encias do Espa\c{c}o Tapada da Ajuda 1349-018 Lisboa (112) Cosmic Dawn Center (DAWN) (113) Niels Bohr Institute Jagtvej 128 (114) Universidad Polit\'ecnica de Cartagena Departamento de Electr\'onica y Tecnolog\'ia de Computadoras Plaza del Hospital 1 30202 Cartagena (115) Kapteyn Astronomical Institute University of Groningen PO Box 800 9700 AV Groningen (116) Dipartimento di Fisica e Scienze della Terra Universit\`a degli Studi di Ferrara Via Giuseppe Saragat 1 44122 Ferrara (117) Istituto Nazionale di Fisica Nucleare Sezione di Ferrara (118) INAF Istituto di Radioastronomia Via Piero Gobetti 101 (119) Astronomical Observatory of the Autonomous Region of the Aosta Valley (OAVdA) Loc. Lignan 39 I-11020 Nus (Aosta Valley) (120) Department of Physics Oxford University Keble Road Oxford OX1 3RH (121) Aurora Technology for European Space Agency (ESA) (122) Department of Mathematics Physics E. De Giorgi University of Salento Via per Arnesano CP-I93 73100 Lecce (123) INFN Sezione di Lecce CP-193 (124) INAF-Sezione di Lecce c/o Dipartimento Matematica e Fisica (125) INAF - Osservatorio Astronomico di Brera via Emilio Bianchi 46 23807 Merate (126) INAF-Osservatorio Astronomico di Brera INFN-Sezione di Genova (127) ICL Junia Universit\'e Catholique de Lille LITL (128) ICSC - Centro Nazionale di Ricerca in High Performance Computing Big Data e Quantum Computing Via Magnanelli 2 Bologna (129) Instituto de F\'isica Te\'orica UAM-CSIC Campus de Cantoblanco 28049 Madrid (130) CERCA/ISO Case Western Reserve University 10900 Euclid Avenue Cleveland OH 44106 (131) Technical University of Munich TUM School of Natural Sciences Physics Department James-Franck-Str. 1 (132) Max-Planck-Institut f\"ur Astrophysik Karl-Schwarzschild-Str. 1 (133) Laboratoire Univers et Th\'eorie (134) Departamento de F\'isica Fundamental. Universidad de Salamanca. Plaza de la Merced s/n. 37008 Salamanca (135) Instituto de Astrof\'isica de Canarias Universidad de La Laguna (136) Center for Data-Driven Discovery Kavli IPMU (WPI) UTIAS The University of Tokyo Kashiwa Chiba 277-8583 Japan (137) University Observatory LMU Faculty of Physics 81679 Munich (138) Max-Planck-Institut f\"ur Physik Boltzmannstr. 8 (139) Dipartimento di Fisica - Sezione di Astronomia Universit\`a di Trieste Via Tiepolo 11 34131 Trieste (140) California Institute of Technology 1200 E California Blvd (141) University of California Los Angeles CA 90095-1562 (142) Department of Physics \& Astronomy University of California Irvine Irvine CA 92697 (143) Departamento F\'isica Aplicada Universidad Polit\'ecnica de Cartagena Campus Muralla del Mar Murcia (144) Instituto de F\'isica de Cantabria Edificio Juan Jord\'a Avenida de los Castros 39005 Santander (145) Observatorio Nacional Rua General Jose Cristino 77-Bairro Imperial de Sao Cristovao Rio de Janeiro 20921-400 Brazil (146) Institute of Cosmology Gravitation University of Portsmouth Portsmouth PO1 3FX (147) Department of Computer Science Aalto University PO Box 15400 Espoo FI-00 076 (148) Ruhr University Bochum Faculty of Physics Astronomical Institute (AIRUB) German Centre for Cosmological Lensing (GCCL) 44780 Bochum (149) Department of Physics Vesilinnantie 5 University of Turku 20014 Turku (150) Serco for European Space Agency (ESA) (151) ARC Centre of Excellence for Dark Matter Particle Physics Melbourne Australia (152) Centre for Astrophysics \& Supercomputing Swinburne University of Technology Hawthorn Victoria 3122 (153) DAMTP Centre for Mathematical Sciences Wilberforce Road Cambridge CB3 0WA (154) Kavli Institute for Cosmology Cambridge Madingley Road Cambridge CB3 0HA (155) Department of Astrophysics University of Zurich Winterthurerstrasse 190 8057 Zurich (156) Department of Physics Centre for Extragalactic Astronomy (157) IRFU Universit\'e Paris-Saclay 91191 Gif-sur-Yvette Cedex (158) Oskar Klein Centre for Cosmoparticle Physics Stockholm University Stockholm SE-106 91 Sweden (159) Astrophysics Group Blackett Laboratory Imperial College London London SW7 2AZ (160) Univ. Grenoble Alpes Grenoble INP LPSC-IN2P3 53 Avenue des Martyrs 38000 Grenoble (161) INAF-Osservatorio Astrofisico di Arcetri Largo E. Fermi 5 50125 Firenze (162) Dipartimento di Fisica Sapienza Universit\`a di Roma Piazzale Aldo Moro 2 (163) Centro de Astrof\'isica da Universidade do Porto 4150-762 Porto (164) HE Space for European Space Agency (ESA) (165) Theoretical astrophysics Uppsala University Box 516 751 37 Uppsala (166) Mathematical Institute University of Leiden (167) Institute of Astronomy University of Cambridge Cambridge CB3 0HA (168) Department of Astrophysical Sciences Peyton Hall Princeton University Princeton NJ 08544 (169) Space physics astronomy research unit University of Oulu Pentti Kaiteran katu 1 FI-90014 Oulu (170) Center for Computational Astrophysics Flatiron Institute 162 5th Avenue 10010 New York NY USA)
Authors on Pith no claims yet
classification 🌌 astro-ph.GA astro-ph.CO
keywords galaxyreconstructioncosmiceuclidspectroscopicalphaexpectedfilaments
0
0 comments X
read the original abstract

The ongoing Euclid mission aims to measure spectroscopic redshifts for approximately two million galaxies using the H $\alpha$ line emission detected in near-infrared slitless spectroscopic data from the Euclid Deep Fields (EDFs). These measurements will reach a flux limit of $5\times 10^{-17}\,{\rm erg}\,{\rm cm}^{-2}\,{\rm s}^{-1}$ in the redshift range $0.4<z<1.8$, opening the door to numerous investigations involving galaxy evolution, extending well beyond the mission's core objectives. The achieved H $\alpha$ luminosity depth will lead to a sufficiently high sampling, enabling the reconstruction of the large-scale galaxy environment. We assess the quality of the reconstruction of the galaxy cosmic web environment with the expected spectroscopic dataset in EDFs. The analysis is carried out on the Flagship and GAEA galaxy mock catalogues. The quality of the reconstruction is first evaluated using geometrical and topological statistics measured on the cosmic web, namely the length of filaments, the area of walls, the volume of voids, and its connectivity and multiplicity. We then quantify how accurately gradients in galaxy properties with distance from filaments can be recovered. As expected, the small-scale redshift-space distortions, have a strong impact on filament lengths and connectivity, but can be mitigated by compressing galaxy groups before skeleton extraction. The cosmic web reconstruction is biased when relying solely on H $\alpha$ emitters. This limitation can be mitigated by applying stellar mass weighting during the reconstruction. However, this approach introduces non-trivial biases that need to be accounted for when comparing to theoretical predictions. Redshift uncertainties pose the greatest challenge in recovering the expected dependence of galaxy properties, though the well-established stellar mass transverse gradients towards filaments can still be observed.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. \textit{Euclid} preparation. Baryon acoustic oscillations extraction techniques: comparison and optimisation

    astro-ph.CO 2026-05 conditional novelty 4.0

    End-to-end validation on Euclid-like mocks shows RecSym and RecIso reconstruction yield unbiased BAO measurements, improving figure of merit for Omega_m and H0 rs by factor of ~3 across 0.9<z<1.8.

  2. Euclid preparation. Three-dimensional galaxy clustering in configuration space: Three-point correlation function estimation

    astro-ph.CO 2026-05 unverdicted novelty 4.0

    Euclid collaboration develops and validates direct and spherical-harmonic estimators plus a random-split optimization for measuring the three-point galaxy correlation function at the scale of the full Euclid survey.