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Euclid. V. The Flagship galaxy mock catalogue: a comprehensive simulation for the mission

Euclid Collaboration F. J. Castander P. Fosalba J. Stadel D. Potter J. Carretero +495 lainnya
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Abstrak

We present the Flagship galaxy mock, a simulated catalogue of billions of galaxies designed to support the scientific exploitation of the mission. 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 breadth of 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 and used in its scientific exploitation. 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 HE <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 main cosmological analysis. Moreover, given its depth and completeness, this new galaxy mock also provides the community with a powerful tool for developing a wide range of scientific analyses beyond the mission.

Topik & Kata Kunci

Physics

Penulis (500)

E

Euclid Collaboration F. J. Castander

P

P. Fosalba

J

J. Stadel

D

D. Potter

J

J. Carretero

P

P. Tallada-Cresp'i

L

L. Pozzetti

M

M. Bolzonella

G

G. A. Mamon

L

L. Blot

K

K. Hoffmann

M

M. Huertas-Company

P

P. Monaco

E

E. J. Gonzalez

G

G. Lucia

C

C. Scarlata

M

M.-A. Breton

L

L. Linke

C

C. Viglione

S

S.-S. Li

Z

Z. Zhai

Z

Z. Baghkhani

K

K. Pardede

C

C. Neissner

R

R. Teyssier

M

M. Crocce

I

I. Tutusaus

L

L. Miller

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G. Congedo

A

A. Biviano

M

M. Hirschmann

A

A. Pezzotta

H

H. Aussel

H

H. Hoekstra

T

T. Kitching

W

W. Percival

L

L. Guzzo

Y

Y. Mellier

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P. Oesch

R

R. Bowler

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S. Bruton

V

V. Allevato

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V. Gonzalez-Perez

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S. Ávila

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U. Zurich

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Italy

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I. Paris

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Umr 7095

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98 bis boulevard Arago

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7. Paris

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98 bis boulevard Arago

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Paris

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K. I. F. T. Physics

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U. Tokyo

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Laboratoire Univers et Th'eorie

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Observatoire de Paris

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Universit'e Psl

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92190 Meudon

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D. Astrof'isica

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11 ViaTiepolo

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2. ViaValerio

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TS 34127Trieste

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M. I. F. Astrophysics

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U. Minnesota

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SE 116ChurchSt

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Format Sitasi

APA MLA BibTeX
Castander, E.C.F.J., Fosalba, P., Stadel, J., Potter, D., Carretero, J., Tallada-Cresp'i, P. et al. (2024). Euclid. V. The Flagship galaxy mock catalogue: a comprehensive simulation for the mission. https://doi.org/10.1051/0004-6361/202450853

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Informasi Jurnal
Tahun Terbit
2024
Bahasa
en
Total Sitasi
13×
Sumber Database
Semantic Scholar
DOI
10.1051/0004-6361/202450853
Akses
Open Access ✓