Euclid preparation XII. Optimizing the photometric sample of the Euclid survey for galaxy clustering and galaxy-galaxy lensing analyses

A. Pocino; Tutusaus; F. J. Castander; P. Fosalba; M. Crocce; A. Porredon; S. Camera; Cardone; S. Casas; T. Kitching; F. Lacasa; M. Martinelli; A. Pourtsidou; Z. Sakr; S. Andreon; N. Auricchio; C. Baccigalupi; A. Balaguera-Antolinez; M. Baldi; A. Balestra; S. Bardelli; R. Bender; A. Biviano; C. Bodendorf; D. Bonino; A. Boucaud; E. Bozzo; E. Branchini; M. Brescia; J. Brinchmann; C. Burigana; R. Cabanac; Capobianco; A. Cappi; C. S. Carvalho; M. Castellano; G. Castignani; S. Cavuoti; A. Cimatti; R. Cledassou; C. Colodro-Conde; G. Congedo; C. J. Conselice; L. Conversi; Y. Copin; L. Corcione; A. Costille; J. Coupon; H. M. Courtois; M. Cropper; J-G Cuby; A. Da Silva; S. de la Torre; D. Di Ferdinando; F. Dubath; C. Duncan; X. Dupac; S. Dusini; S. Farrens; P. G. Ferreira; Ferrero; F. Finelli; S. Fotopoulou; M. Frailis; E. Franceschi; S. Galeotta; B. Garilli; W. Gillard; B. Gillis; C. Giocoli; G. Gozaliasl; J. Gracia-Carpio; F. Grupp; L. Guzzo; W. Holmes; F. Hormuth; K. Jahnke; E. Keihanen; S. Kermiche; A. Kiessling; C. C. Kirkpatrick; M. Kunz; H. Kurki-Suonio; S. Ligori; P. B. Lilje; Lloro; D. Maino; E. Maiorano; O. Mansutti; O. Marggraf; N. Martinet; F. Marulli; R. Massey; S. Maurogordato; E. Medinaceli; S. Mei; M. Meneghetti; R. Benton Metcalf; G. Meylan; M. Moresco; B. Morin; L. Moscardini; E. Munari; R. Nakajima; C. Neissner; R. C. Nichol; S. Niemi; J. Nightingale; C. Padilla; S. Paltani; F. Pasian; L. Patrizii; K. Pedersen; W. J. Percival; Pettorino; S. Pires; G. Polenta; M. Poncet; L. Popa; D. Potter; L. Pozzetti; F. Raison; A. Renzi; J. Rhodes; G. Riccio; E. Romelli; M. Roncarelli; E. Rossetti; R. Saglia; A. G. Sanchez; D. Sapone; R. Scaramella; P. Schneider; Scottez; A. Secroun; G. Seidel; S. Serrano; C. Sirignano; G. Sirri; L. Stanco; F. Sureau; A. N. Taylor; M. Tenti; Tereno; R. Teyssier; R. Toledo-Moreo; A. Tramacere; E. A. Valentijn; L. Valenziano; J. Valiviita; T. Vassallo; M. Viel; Y. Wang; N. Welikala; L. Whittaker; A. Zacchei; G. Zamorani; J. Zoubian; E. Zucca; Euclid Collaboration

doi:10.1051/0004-6361/202141061

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Euclid preparation XII. Optimizing the photometric sample of the Euclid survey for galaxy clustering and galaxy-galaxy lensing analyses

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Euclid preparation XII. Optimizing the photometric sample of the Euclid survey for galaxy clustering and galaxy-galaxy lensing analyses

A. Pocino, Tutusaus, F. J. Castander, P. Fosalba, M. Crocce, A. Porredon, S. Camera, Cardone, S. Casas, T. Kitching, …

Astronomy and astrophysics (Berlin), Vol.655, p.A44

01/11/2021

DOI: https://doi.org/10.1051/0004-6361/202141061

Abstract

Astronomy & Astrophysics

Science & Technology

Physical Sciences

Photometric redshifts (photo-zs) are one of the main ingredients in the analysis of cosmological probes. Their accuracy particularly affects the results of the analyses of galaxy clustering with photometrically selected galaxies (GC(ph)) and weak lensing. In the next decade, space missions such as Euclid will collect precise and accurate photometric measurements for millions of galaxies. These data should be complemented with upcoming ground-based observations to derive precise and accurate photo-zs. In this article we explore how the tomographic redshift binning and depth of ground-based observations will affect the cosmological constraints expected from the Euclid mission. We focus on GC(ph) and extend the study to include galaxy-galaxy lensing (GGL). We add a layer of complexity to the analysis by simulating several realistic photo-z distributions based on the Euclid Consortium Flagship simulation and using a machine learning photo-z algorithm. We then use the Fisher matrix formalism together with these galaxy samples to study the cosmological constraining power as a function of redshift binning, survey depth, and photo-z accuracy. We find that bins with an equal width in redshift provide a higher figure of merit (FoM) than equipopulated bins and that increasing the number of redshift bins from ten to 13 improves the FoM by 35% and 15% for GC(ph) and its combination with GGL, respectively. For GC(ph), an increase in the survey depth provides a higher FoM. However, when we include faint galaxies beyond the limit of the spectroscopic training data, the resulting FoM decreases because of the spurious photo-zs. When combining GC(ph) and GGL, the number density of the sample, which is set by the survey depth, is the main factor driving the variations in the FoM. Adding galaxies at faint magnitudes and high redshift increases the FoM, even when they are beyond the spectroscopic limit, since the number density increase compensates for the photo-z degradation in this case. We conclude that there is more information that can be extracted beyond the nominal ten tomographic redshift bins of Euclid and that we should be cautious when adding faint galaxies into our sample since they can degrade the cosmological constraints.

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Title: Euclid preparation XII. Optimizing the photometric sample of the Euclid survey for galaxy clustering and galaxy-galaxy lensing analyses
Creators: A. Pocino - S&N
Tutusaus - S&N
F. J. Castander - S&N
P. Fosalba - S&N
M. Crocce - S&N
A. Porredon - S&N
S. Camera - Ist Nazl Fis Nucl, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy
Cardone - INAF Osservatorio Astron Roma, Via Frascati 33, I-00078 Monte Porzio Catone, Italy
S. Casas - University of Paris-Saclay
T. Kitching - Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England
F. Lacasa - University of Paris-Saclay
M. Martinelli - Inst Fis Teor UAM CSIC, Campus Cantoblanco, Madrid 28049, Spain
A. Pourtsidou - Queen Mary University of London
Z. Sakr - Univ St Joseph, UR EGFEM, Fac Sci, Beirut, Lebanon
S. Andreon - Mylan
N. Auricchio - OAS
C. Baccigalupi - Inst Fundamental Phys Universe, IFPU, Via Beirut 2, I-34151 Trieste, Italy
A. Balaguera-Antolinez - Universidad de La Laguna
M. Baldi - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
A. Balestra - INAF Osservatorio Astron Padova, Via Osservatorio 5, I-35122 Padua, Italy
S. Bardelli - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
R. Bender - Ludwig Maximilians Univ Munchen, Fak Phys, Univ Sternwarte Munchen, Scheinerstr 1, D-81679 Munich, Germany
A. Biviano - Inst Fundamental Phys Universe, IFPU, Via Beirut 2, I-34151 Trieste, Italy
C. Bodendorf - Max
D. Bonino - INAF Osservatorio Astrofis Torino, Via Osservatorio 20, I-10025 Pino Torinese, TO, Italy
A. Boucaud - Université Paris Cité
E. Bozzo - University of Geneva
E. Branchini - INAF Osservatorio Astron Roma, Via Frascati 33, I-00078 Monte Porzio Catone, Italy
M. Brescia - INAF Osservatorio Astron Capodimonte, Via Moiariello 16, I-80131 Naples, Italy
J. Brinchmann - Universidade do Porto
C. Burigana - INFN Sezione di Bologna
R. Cabanac - University of Toulouse
Capobianco - INAF Osservatorio Astrofis Torino, Via Osservatorio 20, I-10025 Pino Torinese, TO, Italy
A. Cappi - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
C. S. Carvalho - University of Lisbon
M. Castellano - INAF Osservatorio Astron Roma, Via Frascati 33, I-00078 Monte Porzio Catone, Italy
G. Castignani - Federal Reserve
S. Cavuoti - INAF Osservatorio Astron Capodimonte, Via Moiariello 16, I-80131 Naples, Italy
A. Cimatti - University of Bologna
R. Cledassou - Ctr Natl Etud Spatiales, Toulouse, France
C. Colodro-Conde - S&N
G. Congedo - University of Edinburgh
C. J. Conselice - University of Manchester
L. Conversi - European Space Agcy ESRIN, Largo Galileo Galilei 1, I-00044 Rome, Italy
Y. Copin - Institut National de Physique Nucléaire et de Physique des Particules
L. Corcione - INAF Osservatorio Astrofis Torino, Via Osservatorio 20, I-10025 Pino Torinese, TO, Italy
A. Costille - Aix-Marseille University
J. Coupon - University of Geneva
H. M. Courtois - Leibniz Institute of Environmental Medicine
M. Cropper - Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England
J-G Cuby - Aix-Marseille University
A. Da Silva - University of Lisbon
S. de la Torre - Aix-Marseille University
D. Di Ferdinando - INFN Sezione di Bologna
F. Dubath - University of Geneva
C. Duncan - University of Oxford
X. Dupac - S&N
S. Dusini - INFN Padova, Via Marzolo 8, I-35131 Padua, Italy
S. Farrens - University of Paris-Saclay
P. G. Ferreira - University of Oxford
Ferrero - University of Oslo
F. Finelli - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
S. Fotopoulou - University of Bristol
M. Frailis - INAF Osservatorio Astron Trieste, Via GB Tiepolo 11, I-34131 Trieste, Italy
E. Franceschi - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
S. Galeotta - INAF Osservatorio Astron Trieste, Via GB Tiepolo 11, I-34131 Trieste, Italy
B. Garilli - Mylan
W. Gillard - Aix-Marseille University
B. Gillis - University of Edinburgh
C. Giocoli - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
G. Gozaliasl - University of Helsinki
J. Gracia-Carpio - Max
F. Grupp - Ludwig Maximilians Univ Munchen, Fak Phys, Univ Sternwarte Munchen, Scheinerstr 1, D-81679 Munich, Germany
L. Guzzo - University of Milan
W. Holmes - California Institute of Technology
F. Hormuth - von Hoerner & Sulger
K. Jahnke - Heidelberg
E. Keihanen - University of Helsinki
S. Kermiche - Aix-Marseille University
A. Kiessling - California Institute of Technology
C. C. Kirkpatrick - University of Helsinki
M. Kunz - University of Geneva
H. Kurki-Suonio - University of Helsinki
S. Ligori - INAF Osservatorio Astrofis Torino, Via Osservatorio 20, I-10025 Pino Torinese, TO, Italy
P. B. Lilje - University of Oslo
Lloro - Nova Southeastern University
D. Maino - INAF IASF Milano, Via Alfonso Corti 12, I-20133 Milan, Italy
E. Maiorano - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
O. Mansutti - INAF Osservatorio Astron Trieste, Via GB Tiepolo 11, I-34131 Trieste, Italy
O. Marggraf - University of Bonn
N. Martinet - Aix-Marseille University
F. Marulli - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
R. Massey - Univ Durham, Inst Computat Cosmol, Dept Phys, South Rd, Durham DH1 3LE, England
S. Maurogordato - Univ Cote dAzur, Observ Cote dAzur, CNRS, Lab Lagrange, Bd Observ,CS 34229, F-34229 Nice 4, France
E. Medinaceli - OAS
S. Mei - Université Paris Cité
M. Meneghetti - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
R. Benton Metcalf - University of Bologna
G. Meylan - Ecole Polytech Fed Lausanne, Observ Sauverny, CH-1290 Versoix, Switzerland
M. Moresco - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
B. Morin - University of Paris-Saclay
L. Moscardini - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
E. Munari - INAF Osservatorio Astron Trieste, Via GB Tiepolo 11, I-34131 Trieste, Italy
R. Nakajima - University of Bonn
C. Neissner - Universidade Aberta
R. C. Nichol - University of Portsmouth
S. Niemi - Estec, European Space Agcy, Keplerlaan 1, NL-2201 AZ Noordwijk, Netherlands
J. Nightingale - Univ Durham, Dept Phys, ICC, South Rd, Durham DH1 3LE, England
C. Padilla - Universidade Aberta
S. Paltani - University of Geneva
F. Pasian - INAF Osservatorio Astron Trieste, Via GB Tiepolo 11, I-34131 Trieste, Italy
L. Patrizii - Ist Nazl Fis Nucl, Sez Bologna, Viale Berti Pichat 6-2, I-40127 Bologna, Italy
K. Pedersen - Univ Aarhus, Dept Phys & Astron, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
W. J. Percival - Perimeter Institute
Pettorino - University of Paris-Saclay
S. Pires - University of Paris-Saclay
G. Polenta - Italian Space Agcy, Space Sci Data Ctr, Via Politecn Snc, I-00133 Rome, Italy
M. Poncet - Ctr Natl Etud Spatiales, Toulouse, France
L. Popa - Inst Space Sci, Bucharest 077125, Romania
D. Potter - University of Zurich
L. Pozzetti - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
F. Raison - Max
A. Renzi - INFN Padova, Via Marzolo 8, I-35131 Padua, Italy
J. Rhodes - California Institute of Technology
G. Riccio - INAF Osservatorio Astron Capodimonte, Via Moiariello 16, I-80131 Naples, Italy
E. Romelli - INAF Osservatorio Astron Trieste, Via GB Tiepolo 11, I-34131 Trieste, Italy
M. Roncarelli - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
E. Rossetti - University of Bologna
R. Saglia - Ludwig Maximilians Univ Munchen, Fak Phys, Univ Sternwarte Munchen, Scheinerstr 1, D-81679 Munich, Germany
A. G. Sanchez - Max
D. Sapone - University of Chile
R. Scaramella - INAF Osservatorio Astron Roma, Via Frascati 33, I-00078 Monte Porzio Catone, Italy
P. Schneider - University of Bonn
Scottez - Inst Astrophys Paris, 98Bis Blvd Arago, F-75014 Paris, France
A. Secroun - Aix-Marseille University
G. Seidel - Heidelberg
S. Serrano - S&N
C. Sirignano - INFN Padova, Via Marzolo 8, I-35131 Padua, Italy
G. Sirri - Ist Nazl Fis Nucl, Sez Bologna, Viale Berti Pichat 6-2, I-40127 Bologna, Italy
L. Stanco - INFN Padova, Via Marzolo 8, I-35131 Padua, Italy
F. Sureau - University of Paris-Saclay
A. N. Taylor - University of Edinburgh
M. Tenti - Ist Nazl Fis Nucl, Sez Bologna, Viale Berti Pichat 6-2, I-40127 Bologna, Italy
Tereno - University of Lisbon
R. Teyssier - University of Zurich
R. Toledo-Moreo - Univ Politecn Cartagena, Dept Elect & Tecnol Comp, Cartagena 30202, Spain
A. Tramacere - University of Geneva
E. A. Valentijn - University of Groningen
L. Valenziano - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
J. Valiviita - University of Helsinki
T. Vassallo - Ludwig Maximilians Univ Munchen, Fak Phys, Univ Sternwarte Munchen, Scheinerstr 1, D-81679 Munich, Germany
M. Viel - Inst Fundamental Phys Universe, IFPU, Via Beirut 2, I-34151 Trieste, Italy
Y. Wang - California Institute of Technology
N. Welikala - University of Edinburgh
L. Whittaker - University of Manchester
A. Zacchei - INAF Osservatorio Astron Trieste, Via GB Tiepolo 11, I-34131 Trieste, Italy
G. Zamorani - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
J. Zoubian - Aix-Marseille University
E. Zucca - INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
Euclid Collaboration
Publication Details: Astronomy and astrophysics (Berlin), Vol.655, p.A44
Publisher: Edp Sciences S A
Number of pages: 21
Date published: 01/11/2021
Grant note: ESP2017-89838 / Spanish Ministry of Science, Innovation and Universities; Spanish Government MIUR through Rita Levi Montalcini project 'PROMETHEUS - Probing and Relating Observables with Multi-wavelength Experiments To Help Enlightening the Universe's Structure' European FEDER/ERF funds, L'FSE inverteix en el teu futur Secretaria d'Universitats i Recerca del Departament d'Empresa i Coneixement de la Generalitat de Catalunya; Generalitat de Catalunya MR/S016066/1 / UK Research and Innovation; UK Research & Innovation (UKRI) L. 232/2016 / 'Departments of Excellence 2018-2022' Grant - Italian Ministry of Education, University and Research (MIUR); Ministry of Education, Universities and Research (MIUR) 776247 / H2020 programme of the European Commission
Identifiers: 99820235102346
Academic Unit: FEPS Central Faculty Admin
Language: English
Resource Type: Journal article

Euclid preparation XII. Optimizing the photometric sample of the Euclid survey for galaxy clustering and galaxy-galaxy lensing analyses

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