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research article

Subhalo abundance matching through the lens of a hydrodynamical simulation

Favole, Ginevra  
•
Montero-Dorta, Antonio D.
•
Artale, M. Celeste
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January 1, 2022
Monthly Notices Of The Royal Astronomical Society

We use the IllustrisTNG100 hydrodynamical simulation to study the dependence of the galaxy two-point correlation function on a broad range of secondary subhalo and galactic properties. We construct galaxy mock catalogues adopting a standard subhalo abundance matching scheme coupled with a secondary assignment between galaxy colour or specific star formation rate and the following subhalo properties: starvation redshift z(starve), concentration at infall, overdensity delta(env)(R), tidal anisotropy alpha(R), and tidal overdensity delta(R). The last two quantities allow us to fully characterize the tidal field of our subhaloes, acting as mediators between their internal and large-scale properties. The resulting mock catalogues overall return good agreement with the IllustrisTNG100 measurements. The accuracy of each model strongly depends on the correlation between the secondary galaxy and subhalo properties employed. Among all the subhalo proxies tested, we find that z(starve) and c(infall) are the ones that best trace the large-scale structure, producing robust clustering predictions for different samples of red/blue and quenched/star-forming galaxies.

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Type
research article
DOI
10.1093/mnras/stab3006
Web of Science ID

WOS:000728381700004

Author(s)
Favole, Ginevra  
Montero-Dorta, Antonio D.
Artale, M. Celeste
Contreras, Sergio
Zehavi, Idit
Xu, Xiaoju
Date Issued

2022-01-01

Publisher

OXFORD UNIV PRESS

Published in
Monthly Notices Of The Royal Astronomical Society
Volume

509

Issue

2

Start page

1614

End page

1625

Subjects

Astronomy & Astrophysics

•

galaxies: formation

•

galaxies: haloes

•

galaxies: statistics

•

large-scale structure of universe

•

cosmology: observations

•

cosmology: theory

•

dark-matter haloes

•

assembly bias

•

illustristng simulations

•

cosmic web

•

formation history

•

galaxy formation

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star-formation

•

mass relation

•

dependence

•

evolution

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LASTRO  
Available on Infoscience
January 31, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/185027
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