Euclid. V. The Flagship galaxy mock catalogue: a comprehensive simulation for the Euclid mission
Creators: name: Euclid Collaboration
name: Castander, F. J.
name: Fosalba, P.
name: Stadel, J.
name: Potter, D.
name: Carretero, J.
name: Tallada-Crespí, P.
name: Pozzetti, L.
name: Bolzonella, M.
name: Mamon, G. A.
name: Blot, L.
name: Hoffmann, K.
name: Huertas-Company, M.
name: Monaco, P.
name: Gonzalez, E. J.
name: De Lucia, G.
name: Scarlata, C.
name: Breton, M. -A.
name: Linke, L.
name: Viglione, C.
name: Li, S. -S.
name: Zhai, Z.
name: Baghkhani, Z.
name: Pardede, K.
name: Neissner, C.
name: Teyssier, R.
name: Crocce, M.
name: Tutusaus, I.
name: Miller, L.
name: Congedo, G.
name: Biviano, A.
name: Hirschmann, M.
name: Pezzotta, A.
name: Aussel, H.
name: Hoekstra, H.
name: Kitching, T.
name: Percival, W. J.
name: Guzzo, L.
name: Mellier, Y.
name: Oesch, P. A.
name: Bowler, R. A. A.
name: Bruton, S.
name: Allevato, V.
name: Gonzalez-Perez, V.
name: Manera, M.
name: Avila, S.
name: Kovács, A.
name: Aghanim, N.
name: Altieri, B.
name: Amara, A.
name: Amendola, L.
name: Andreon, S.
name: Auricchio, N.
name: Baldi, M.
name: Balestra, A.
name: Bardelli, S.
name: Bender, R.
name: Bodendorf, C.
name: Bonino, D.
name: Branchini, E.
name: Brescia, M.
name: Brinchmann, J.
name: Camera, S.
name: Capobianco, V.
name: Carbone, C.
name: Casas, S.
name: Castellano, M.
name: Cavuoti, S.
name: Cimatti, A.
name: Conselice, C. J.
name: Conversi, L.
name: Copin, Y.
name: Corcione, L.
name: Courbin, F.
name: Courtois, H. M.
name: Da Silva, A.
name: Degaudenzi, H.
name: Di Giorgio, A. M.
name: Dinis, J.
name: Douspis, M.
name: Dubath, F.
name: Duncan, C. A. J.
name: Dupac, X.
name: Dusini, S.
name: Ealet, A.
name: Farina, M.
name: Farrens, S.
name: Ferriol, S.
name: Fotopoulou, S.
name: Fourmanoit, N.
name: Frailis, M.
name: Franceschi, E.
name: Franzetti, P.
name: Galeotta, S.
name: Gillard, W.
name: Gillis, B.
name: Giocoli, C.
name: Gómez-Alvarez, P.
name: Granett, B. R.
name: Grazian, A.
name: Grupp, F.
name: Haugan, S. V. H.
name: Holliman, M. S.
name: Holmes, W.
name: Hook, I.
name: Hormuth, F.
name: Hornstrup, A.
name: Hudelot, P.
name: Jahnke, K.
name: Jhabvala, M.
name: Joachimi, B.
name: Keihänen, E.
name: Kermiche, S.
name: Kiessling, A.
name: Kilbinger, M.
name: Kohley, R.
name: Kubik, B.
name: Kümmel, M.
name: Kunz, M.
name: Kurki-Suonio, H.
name: Lahav, O.
name: Laureijs, R.
name: Mignant, D. Le
name: Ligori, S.
name: Lilje, P. B.
name: Lindholm, V.
name: Lloro, I.
name: Maino, D.
name: Maiorano, E.
name: Mansutti, O.
name: Marggraf, O.
name: Markovic, K.
name: Martinet, N.
name: Marulli, F.
name: Massey, R.
name: Masters, D. C.
name: Maurogordato, S.
name: McCracken, H. J.
name: Medinaceli, E.
name: Mei, S.
name: Melchior, M.
name: Meneghetti, M.
name: Merlin, E.
name: Meylan, G.
name: Mohr, J. J.
name: Moresco, M.
name: Moscardini, L.
name: Munari, E.
name: Nakajima, R.
name: Nichol, R. C.
name: Niemi, S. -M.
name: Padilla, C.
name: Paech, K.
name: Paltani, S.
name: Pasian, F.
name: Peacock, J. A.
name: Pedersen, K.
name: Pettorino, V.
name: Pires, S.
name: Polenta, G.
name: Poncet, M.
name: Popa, L. A.
name: Raison, F.
name: Rebolo, R.
name: Renzi, A.
name: Rhodes, J.
name: Riccio, G.
name: Romelli, E.
name: Roncarelli, M.
name: Rosset, C.
name: Rossetti, E.
name: Saglia, R.
name: Sapone, D.
name: Schirmer, M.
name: Schneider, P.
name: Schrabback, T.
name: Scodeggio, M.
name: Secroun, A.
name: Seidel, G.
name: Serrano, S.
name: Sirignano, C.
name: Sirri, G.
name: Stanco, L.
name: Starck, J. -L.
name: Taylor, A. N.
name: Teplitz, H. I.
name: Tereno, I.
name: Toledo-Moreo, R.
name: Torradeflot, F.
name: Tsyganov, A.
name: Valenziano, L.
name: Vassallo, T.
name: Veropalumbo, A.
name: Wang, Y.
name: Weller, J.
name: Zacchei, A.
name: Zamorani, G.
name: Zerbi, F. M.
name: Zoubian, J.
name: Zucca, E.
name: Baccigalupi, C.
name: Bernardeau, F.
name: Boucaud, A.
name: Bozzo, E.
name: Burigana, C.
name: Calabrese, M.
name: Casenove, P.
name: Castignani, G.
name: Colodro-Conde, C.
name: Di Ferdinando, D.
name: Vigo, J. A. Escartin
name: Fabbian, G.
name: Finelli, F.
name: Gracia-Carpio, J.
name: Ilić, S.
name: Liebing, P.
name: Marcin, S.
name: Martinelli, M.
name: Matthew, S.
name: Mauri, N.
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name: Porciani, C.
name: Sakr, Z.
name: Scottez, V.
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name: Steinwagner, J.
name: Tenti, M.
name: Viel, M.
name: Wiesmann, M.
name: Akrami, Y.
name: Anselmi, S.
name: Archidiacono, M.
name: Atrio-Barandela, F.
name: Aubourg, E.
name: Balaguera-Antolinez, A.
name: Ballardini, M.
name: Bertacca, D.
name: Bethermin, M.
name: Blanchard, A.
name: Böhringer, H.
name: Borgani, S.
name: Bouvard, T.
name: Cabanac, R.
name: Calabro, A.
name: Quevedo, B. Camacho
name: Canas-Herrera, G.
name: Cappi, A.
name: Caro, F.
name: Carvalho, C. S.
name: Castro, T.
name: Chambers, K. C.
name: Contarini, S.
name: Contini, T.
name: Cooray, A. R.
name: Costanzi, M.
name: Cucciati, O.
name: Davini, S.
name: De Caro, B.
name: de la Torre, S.
name: Desprez, G.
name: Díaz-Sánchez, A.
name: Diaz, J. J.
name: Di Domizio, S.
name: Dole, H.
name: Escoffier, S.
name: Ezziati, M.
name: Ferrari, A. G.
name: Ferreira, P. G.
name: Ferrero, I.
name: Finoguenov, A.
name: Fontana, A.
name: Fornari, F.
name: Gabarra, L.
name: Ganga, K.
name: García-Bellido, J.
name: Gasparetto, T.
name: Gaztanaga, E.
name: Giacomini, F.
name: Gianotti, F.
name: Gonzalez, A. H.
name: Gozaliasl, G.
name: Hall, A.
name: Hartley, W. G.
name: Hildebrandt, H.
name: Hjorth, J.
name: Holland, A. D.
name: Ilbert, O.
name: Joudaki, S.
name: Jullo, E.
name: Kajava, J. J. E.
name: Kansal, V.
name: Karagiannis, D.
name: Kirkpatrick, C. C.
name: Graet, J. Le
name: Legrand, L.
name: Lesgourgues, J.
name: Liaudat, T. I.
name: Loureiro, A.
name: Macias-Perez, J.
name: Magliocchetti, M.
name: Mancini, C.
name: Mannucci, F.
name: Maoli, R.
name: Martins, C. J. A. P.
name: Maurin, L.
name: Metcalf, R. B.
name: Migliaccio, M.
name: Miluzio, M.
name: Mora, A.
name: Moretti, C.
name: Morgante, G.
name: Nadathur, S.
name: Nicastro, L.
name: Walton, Nicholas A.
name: Oguri, M.
name: Patrizii, L.
name: Popa, V.
name: Pourtsidou, A.
name: Reimberg, P.
name: Risso, I.
name: Rocci, P. -F.
name: Rollins, R. P.
name: Rusholme, B.
name: Sahlén, M.
name: Sánchez, A. G.
name: Schaye, J.
name: Schewtschenko, J. A.
name: Schneider, A.
name: Schultheis, M.
name: Sereno, M.
name: Shankar, F.
name: Shulevski, A.
name: Silvestri, A.
name: Simon, P.
name: Mancini, A. Spurio
name: Stanford, S. A.
name: Tanidis, K.
name: Tao, C.
name: Tessore, N.
name: Testera, G.
name: Tewes, M.
name: Toft, S.
name: Tosi, S.
name: Troja, A.
name: Tucci, M.
name: Valieri, C.
name: Valiviita, J.
name: Vergani, D.
name: Vernizzi, F.
name: Verza, G.
name: Vielzeuf, P.
name: Weaver, J. R.
name: Zalesky, L.
name: Dimauro, P.
name: Duc, P. -A.
name: Fang, Y.
name: Ferguson, A. M. N.
name: Gutierrez, C. M.
name: Kova{č}ić, I.
name: Kruk, S.
name: Brun, A. M. C. Le
name: Montoro, A.
name: Murray, C.
name: Pagano, L.
name: Paoletti, D.
name: Sarpa, E.
name: Viitanen, A.
name: Martín-Fleitas, J.
name: Yung, L. Y. A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We present the Flagship galaxy mock, a simulated catalogue of billions of galaxies designed to support the scientific exploitation of the Euclid mission. Euclid is a medium-class mission of the European Space Agency optimised to determine the properties of dark matter and dark energy on the largest scales of the Universe. It probes structure formation over more than 10 billion years primarily from the combination of weak gravitational lensing and galaxy clustering data. The breath of Euclid's data will also foster a wide variety of scientific analyses. The Flagship simulation was developed to provide a realistic approximation to the galaxies that will be observed by Euclid and used in its scientific analyses. We ran a state-of-the-art N-body simulation with four trillion particles, producing a lightcone on the fly. From the dark matter particles, we produced a catalogue of 16 billion haloes in one octant of the sky in the lightcone up to redshift z=3. We then populated these haloes with mock galaxies using a halo occupation distribution and abundance matching approach, calibrating the free parameters of the galaxy mock against observed correlations and other basic galaxy properties. Modelled galaxy properties include luminosity and flux in several bands, redshifts, positions and velocities, spectral energy distributions, shapes and sizes, stellar masses, star formation rates, metallicities, emission line fluxes, and lensing properties. We selected a final sample of 3.4 billion galaxies with a magnitude cut of H_E&lt;26, where we are complete. We have performed a comprehensive set of validation tests to check the similarity to observational data and theoretical models. In particular, our catalogue is able to closely reproduce the main characteristics of the weak lensing and galaxy clustering samples to be used in the mission's main cosmological analysis. (abridged)
description: Paper submitted as part of the A&amp;A special issue `Euclid on Sky', which contains Euclid key reference papers and first results from the Euclid Early Release Observations