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Semantic Scholar Open Access 2026

Euclid. Populating a dark universe with galaxies using SciPIC

Euclid Collaboration E. J. Gonzalez J. Carretero Z. Baghkhani F. Castander P. Fosalba +495 lainnya
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High-fidelity galaxy mocks are crucial for validating analysis pipelines and for cosmological inference. In this context, the Science Pipeline at PIC (SciPIC) is a pipeline specifically designed for the fast generation of synthetic galaxy catalogues from the halo properties identified in cosmological simulations. SciPIC delivers galaxy catalogues that aim to reproduce the observed luminosity function and clustering above a given flux detection limit over a wide redshift range. In this work, we introduce SciPICal, an automated pipeline that calibrates the parameters that set the main mock galaxy properties, namely number density, luminosities, colours, and positions. The pipeline is applied to the Euclid Flagship 2 Wide and Deep halo catalogues, specifically built to support the \textit{Euclid} wide and deep surveys. Compared to the recently released Flagship 2 Wide mock, our calibrated version improves the clustering predictions by approximately 50\% based on chi-squared values. Furthermore, we produce the Euclid Deep mock catalogue, which reaches up to $z = 10$ by populating a light-cone and a complementary snapshot at $z = 0$. We validate these catalogues using measurements from spectroscopic and photometric galaxy surveys, as well as with results from a hydrodynamical simulation. The obtained good agreement (within $15\%$ for most of the samples) in the clustering predictions across the different galaxy samples considered, validates our calibration strategy and demonstrates the strong predictive power of the generated mocks. This pipeline will allow us to improve the methodology applied in assigning the galaxy properties and ensures that the galaxy mocks remain up-to-date by incorporating constraints from upcoming observational data in the calibration procedure.

Topik & Kata Kunci

Physics

Penulis (500)

E

Euclid Collaboration E. J. Gonzalez

J

J. Carretero

Z

Z. Baghkhani

F

F. Castander

P

P. Fosalba

P

P. Tallada-Cresp'i

J

J. Stadel

D

D. Potter

I

I. Tutusaus

S

S. Ramakrishnan

M

M. V. Heukelum

N

N. E. Chisari

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F. Marulli

M

M. Bolzonella

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J

J. Chaves-Montero

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M

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L

L. Blot

K

K. Hoffmann

M

M. Huertas-Company

P

P. Monaco

C

C. Scarlata

M

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S

S.-S. Li

R

R. Teyssier

M

M. Crocce

G

G. Congedo

A

A. Biviano

M

M. Hirschmann

A

A. Pezzotta

H

H. Hoekstra

W

W. Percival

P

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R

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V

V. Gonzalez-Perez

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S. Ávila

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A

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M

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L

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A

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C. Uhlemann

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D. Vergani

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G. Verza

P

P. Vielzeuf

S

S. Vinciguerra

M

M. V. Wietersheim-Kramsta

N

N. A. Walton

A

A. Wright

H

H. W. Y. D. D. F'isica

U

U. Barcelona

0

08193 Bellaterra

S

Spain

I

I. D. A. T. Y. Experimental

L

Laprida 854

X

X5000BGR

C

C'ordoba

A

Argentina

C

Centro de Investigaciones Energ'eticas

M

Medioambientales y Tecnol'ogicas

4

40 AvenidaComplutense

2

28014 Madrid

P

Port d'Informaci'o Cient'ifica

C

Campus Uab

C

C. Sn

I

Institute of Space Sciences

C

Carrer de Can Magrans

S

Sn

0

08193 Barcelona

I

I. D. E. D. Catalunya

E

Edifici Rdit

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C. Upc

0

08860 Castelldefels

B

Barcelona

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D. O. Astrophysics

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U. Zurich

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Winterthurerstrasse 190

8

8093 Zurich

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Switzerland.

I

Institut de Recherche en Astrophysique et Plan'etologie

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U. Toulouse

C

Cnrs

U

Ups

C

Cnes

1

14 Avenue Edouard Belin

3

31400 Toulouse

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France

I

Institute for Theoretical Physics

U

Utrecht University

5

5. Princetonplein

3

3584 CE Utrecht

T

The Netherlands

L

L. Observatory

L

Leiden University

5

55 Einsteinweg

2

2333 CC Leiden

D

D. Bologna

V

V. G. 932

4

40129 Bologna

I

Italy

I

I. Bologna

V

V. G. 933

I

I. Bologna

6

62 vialeBertiPichat

4

40129 Bologna

I

Institut de F'isica d'Altes Energies

T

T. Z. F. O. Science

T

Technology

S

Sissa

I

International School for Advanced Studies

V

Via Bonomea 265

T

TS 34136Trieste

S

Serra H'unter Fellow

D

Departament de F'isica

E

E-08193 Bellaterra

C

Center for Data Driven Discovery

K

Kavli Ipmu

U

Utias

T

T. U. O. Tokyo

K

Kashiwa

C

Chiba 277-8583

J

Japan.

L

Laboratoire d'etude de l'Univers et des phenomenes eXtremes

O

Observatoire de Paris

U

Universit'e Psl

S

Sorbonne Universit'e

9

92190 Meudon

I

Instituto de Astrof'isica de Canarias

E

E. Laguna

T

Tenerife

L

Lerma

7

75014

P

Paris

U

Universit'e Paris-Cit'e

5

5. R. T. Mann

7

75013

D

D. Astronomia

U

U. Trieste

1

11 ViaTiepolo

3

34127 Trieste

I

Inaf Trieste

1

11 ViaG.B.Tiepolo

3

34127 Trieste

I

Infn

S

Sezione di Trieste

2

2. ViaValerio

T

TS 34127Trieste

I

Ifpu

I

Institute for Fundamental Physics of the Universe

2

2. viaBeirut

3

34127 Trieste

M

M. I. F. Astrophysics

U

U. Minnesota

S

SE 116ChurchSt

M

Minneapolis

M

MN 55455

U

Usa

U

Universit'e Paris-Saclay

U

Universit'e de Paris Cit'e

C

Cea

A

Aim

9

91191

G

Gif-sur-Yvette

K

Kavli Institute for Cosmology

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Stanford University

S

Stanford

C

CA 94305

S

S. N. Laboratory

2

2575 Sand Hill Road

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Menlo Park

C

CA 94025

D

D. Sciences

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Peyton Hall

P

P. University.

P

Princeton

N

NJ 08544

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Institute for Astronomy

U

U. Edinburgh

R

R. Observatory

B

B. Hill

E

Edinburgh EH9 3HJ

U

Uk

I

Institute of Physics

L

Laboratory for Galaxy Evolution

E

E. P. F. Lausanne

O

Observatoire de Sauverny

C

CH-1290 Versoix

I

Inaf Brera

2

28 ViaBrera

2

20133 Milano

W

Waterloo Centre for Astrophysics

U

U. Waterloo

W

Waterloo

O

Ontario N2L 3G1

C

Canada

D

D. Physics

A

Astronomy

P

P. I. O. T. Physics

O

Ontario N2L 2Y5

D

D. O. Astronomy

U

U. Geneva

1

16 ch.d'Ecogia

1

1290 Versoix

C

Cosmic Dawn Center

N

Niels Bohr Institute

U

U. Copenhagen

J

Jagtvej 128

2

2200 Copenhagen

D

Denmark.

J

J. B. C. F. Astrophysics

U

U. Manchester

O

Oxford Road

M

M13 9PL

D

Departamento de F'isica Te'orica

F

F. Ciencias

U

U. A. D. Madrid

2

28049 Cantoblanco

M

Madrid

C

Centro de Investigaci'on Avanzada en F'isica Fundamental

2

28014 Madrid

M

MTA-ELTE Astrophysics Research Group

K

Konkoly Thege Mikl'os 'ut 15-17

H

H. Budapest

H

Hungary

K

K. Observatory

H

H. Csfk

M

Mta Centre of Excellence

B

Budapešť

K

Konkoly Thege Mikl'os 'ut 15-17. H-1121

E

Esacesa

C

Camino Bajo de Castillo

S

Sn

U

Urb. Villafranca del Castillo

2

28692 Villanueva de la Canada

D

D. Astronomia

U

U. Bologna

V

V. G. 932

D

D. Fisica

U

U. Genova

3

33 viaDodecaneso

1

16146

G

Genova

I

I. Genova

Format Sitasi

APA MLA BibTeX
Gonzalez, E.C.E.J., Carretero, J., Baghkhani, Z., Castander, F., Fosalba, P., Tallada-Cresp'i, P. et al. (2026). Euclid. Populating a dark universe with galaxies using SciPIC. https://www.semanticscholar.org/paper/6720e8c919a699bf9d7f29323406a28f30873ff1

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