Dark-ages reionization and galaxy formation simulation-XI. Clustering and halo masses of high redshift galaxies

Jaehong Park; Han Seek Kim; Chuanwu Liu; Michele Trenti; Alan R. Duffy; Paul M. Geil; Simon J. Mutch; Gregory B. Poole; Andrei Mesinger; J. Stuart B. Wyithe

doi:10.1093/MNRAS/STX1884

Dark-ages reionization and galaxy formation simulation-XI. Clustering and halo masses of high redshift galaxies

Jaehong Park^*, Han Seek Kim, Chuanwu Liu, Michele Trenti, Alan R. Duffy, Paul M. Geil, Simon J. Mutch, Gregory B. Poole, Andrei Mesinger, J. Stuart B. Wyithe

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

We investigate the clustering properties of Lyman-break galaxies (LBGs) at z~6-8. Using the semi-analytical model MERAXES constructed as part of the dark-ages reionization and galaxyformation observables from numerical simulation (DRAGONS) project, we predict the angular correlation function (ACF) of LBGs at z ~ 6-8. Overall, we find that the predicted ACFs are in good agreement with recent measurements at z~6 and z~7.2 from observations consisting of the Hubble eXtreme Deep Field, the Hubble Ultra Deep Field and cosmic sssembly nearinfrared deep extragalactic legacy survey field. We confirm the dependence of clustering on luminosity, with more massive dark matter haloes hosting brighter galaxies, remains valid at high redshift. The predicted galaxy bias at fixed luminosity is found to increase with redshift, in agreement with observations. We find that LBGs of magnitude M_AB(1600) < -19.4 at 6 ≲ z ≲ 8 reside in dark matter haloes of mean mass ~10^11.0-10^11.5M_⊙, and this dark matter halo mass does not evolve significantly during reionisation.

Original language	English
Pages (from-to)	1995-2008
Number of pages	14
Journal	Monthly Notices of the Royal Astronomical Society
Volume	472
Issue number	2
DOIs	https://doi.org/10.1093/MNRAS/STX1884
Publication status	Published - 2017
Externally published	Yes

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@article{011afb0844ac4cf39c7a642229d82c93,

title = "Dark-ages reionization and galaxy formation simulation-XI. Clustering and halo masses of high redshift galaxies",

abstract = "We investigate the clustering properties of Lyman-break galaxies (LBGs) at z\textasciitilde{}6-8. Using the semi-analytical model MERAXES constructed as part of the dark-ages reionization and galaxyformation observables from numerical simulation (DRAGONS) project, we predict the angular correlation function (ACF) of LBGs at z \textasciitilde{} 6-8. Overall, we find that the predicted ACFs are in good agreement with recent measurements at z\textasciitilde{}6 and z\textasciitilde{}7.2 from observations consisting of the Hubble eXtreme Deep Field, the Hubble Ultra Deep Field and cosmic sssembly nearinfrared deep extragalactic legacy survey field. We confirm the dependence of clustering on luminosity, with more massive dark matter haloes hosting brighter galaxies, remains valid at high redshift. The predicted galaxy bias at fixed luminosity is found to increase with redshift, in agreement with observations. We find that LBGs of magnitude MAB(1600) < -19.4 at 6 ≲ z ≲ 8 reside in dark matter haloes of mean mass \textasciitilde{}1011.0-1011.5M⊙, and this dark matter halo mass does not evolve significantly during reionisation.",

keywords = "Cosmology: theory, Dark ages, First stars, Galaixes: high-redshift, Galaxies: haloes, Large-scale structure of Universe, Reionization",

author = "Jaehong Park and Kim, \{Han Seek\} and Chuanwu Liu and Michele Trenti and Duffy, \{Alan R.\} and Geil, \{Paul M.\} and Mutch, \{Simon J.\} and Poole, \{Gregory B.\} and Andrei Mesinger and Wyithe, \{J. Stuart B.\}",

note = "Publisher Copyright: {\textcopyright} 2017 The Authors.",

year = "2017",

doi = "10.1093/MNRAS/STX1884",

language = "English",

volume = "472",

pages = "1995--2008",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press ",

number = "2",

}

TY - JOUR

T1 - Dark-ages reionization and galaxy formation simulation-XI. Clustering and halo masses of high redshift galaxies

AU - Park, Jaehong

AU - Kim, Han Seek

AU - Liu, Chuanwu

AU - Trenti, Michele

AU - Duffy, Alan R.

AU - Geil, Paul M.

AU - Mutch, Simon J.

AU - Poole, Gregory B.

AU - Mesinger, Andrei

AU - Wyithe, J. Stuart B.

PY - 2017

Y1 - 2017

N2 - We investigate the clustering properties of Lyman-break galaxies (LBGs) at z~6-8. Using the semi-analytical model MERAXES constructed as part of the dark-ages reionization and galaxyformation observables from numerical simulation (DRAGONS) project, we predict the angular correlation function (ACF) of LBGs at z ~ 6-8. Overall, we find that the predicted ACFs are in good agreement with recent measurements at z~6 and z~7.2 from observations consisting of the Hubble eXtreme Deep Field, the Hubble Ultra Deep Field and cosmic sssembly nearinfrared deep extragalactic legacy survey field. We confirm the dependence of clustering on luminosity, with more massive dark matter haloes hosting brighter galaxies, remains valid at high redshift. The predicted galaxy bias at fixed luminosity is found to increase with redshift, in agreement with observations. We find that LBGs of magnitude MAB(1600) < -19.4 at 6 ≲ z ≲ 8 reside in dark matter haloes of mean mass ~1011.0-1011.5M⊙, and this dark matter halo mass does not evolve significantly during reionisation.

AB - We investigate the clustering properties of Lyman-break galaxies (LBGs) at z~6-8. Using the semi-analytical model MERAXES constructed as part of the dark-ages reionization and galaxyformation observables from numerical simulation (DRAGONS) project, we predict the angular correlation function (ACF) of LBGs at z ~ 6-8. Overall, we find that the predicted ACFs are in good agreement with recent measurements at z~6 and z~7.2 from observations consisting of the Hubble eXtreme Deep Field, the Hubble Ultra Deep Field and cosmic sssembly nearinfrared deep extragalactic legacy survey field. We confirm the dependence of clustering on luminosity, with more massive dark matter haloes hosting brighter galaxies, remains valid at high redshift. The predicted galaxy bias at fixed luminosity is found to increase with redshift, in agreement with observations. We find that LBGs of magnitude MAB(1600) < -19.4 at 6 ≲ z ≲ 8 reside in dark matter haloes of mean mass ~1011.0-1011.5M⊙, and this dark matter halo mass does not evolve significantly during reionisation.

KW - Cosmology: theory

KW - Dark ages

KW - First stars

KW - Galaixes: high-redshift

KW - Galaxies: haloes

KW - Large-scale structure of Universe

KW - Reionization

UR - http://www.scopus.com/inward/record.url?scp=85041671272&partnerID=8YFLogxK

U2 - 10.1093/MNRAS/STX1884

DO - 10.1093/MNRAS/STX1884

M3 - Article

AN - SCOPUS:85041671272

SN - 0035-8711

VL - 472

SP - 1995

EP - 2008

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

Dark-ages reionization and galaxy formation simulation-XI. Clustering and halo masses of high redshift galaxies

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