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

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dc.contributor.authorPark, Jaehongen
dc.contributor.authorKim, Han Seeken
dc.contributor.authorLiu, Chuanwuen
dc.contributor.authorTrenti, Micheleen
dc.contributor.authorDuffy, Alan R.en
dc.contributor.authorGeil, Paul M.en
dc.contributor.authorMutch, Simon J.en
dc.contributor.authorPoole, Gregory B.en
dc.contributor.authorMesinger, Andreien
dc.contributor.authorWyithe, J. Stuart B.en
dc.date.accessioned2026-01-02T09:42:02Z
dc.date.available2026-01-02T09:42:02Z
dc.date.issued2017en
dc.description.abstractWe 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.en
dc.description.sponsorshipThis research was supported by the Victorian Life Sciences Computation Initiative (VLSCI), grant ref. UOM0005, on its Peak Computing Facility hosted at the University of Melbourne, an initiative of the Victorian Government, Australia. Part of this work was performed on the gSTAR national facility at Swinburne University of Technology. gSTAR is funded by Swinburne and the Australian Governments Education Investment Fund. This research program is funded by the Australian Research Council through theARC Laureate Fellowship FL110100072 awarded to JSBW. HSK is supported by a Discovery Early Career Researcher Awards (DE140100940) from the Australian Research Council. AM acknowledges support from the European Research Council (ERC) under the European Unions Horizon 2020 research and innovation program (grant agreement No 638809 AIDA).en
dc.description.statusPeer-revieweden
dc.format.extent14en
dc.identifier.issn0035-8711en
dc.identifier.otherORCID:/0000-0001-7956-9758/work/195266038en
dc.identifier.scopus85041671272en
dc.identifier.urihttps://hdl.handle.net/1885/733802545
dc.language.isoenen
dc.rightsPublisher Copyright: © 2017 The Authors.en
dc.sourceMonthly Notices of the Royal Astronomical Societyen
dc.subjectCosmology: theoryen
dc.subjectDark agesen
dc.subjectFirst starsen
dc.subjectGalaixes: high-redshiften
dc.subjectGalaxies: haloesen
dc.subjectLarge-scale structure of Universeen
dc.subjectReionizationen
dc.titleDark-ages reionization and galaxy formation simulation-XI. Clustering and halo masses of high redshift galaxiesen
dc.typeJournal articleen
dspace.entity.typePublicationen
local.bibliographicCitation.lastpage2008en
local.bibliographicCitation.startpage1995en
local.contributor.affiliationPark, Jaehong; University of Melbourneen
local.contributor.affiliationKim, Han Seek; University of Melbourneen
local.contributor.affiliationLiu, Chuanwu; University of Melbourneen
local.contributor.affiliationTrenti, Michele; University of Melbourneen
local.contributor.affiliationDuffy, Alan R.; Swinburne University of Technologyen
local.contributor.affiliationGeil, Paul M.; University of Melbourneen
local.contributor.affiliationMutch, Simon J.; University of Melbourneen
local.contributor.affiliationPoole, Gregory B.; University of Melbourneen
local.contributor.affiliationMesinger, Andrei; Scuola Normale Superiore di Pisaen
local.contributor.affiliationWyithe, J. Stuart B.; University of Melbourneen
local.identifier.citationvolume472en
local.identifier.doi10.1093/MNRAS/STX1884en
local.identifier.pure011afb08-44ac-4cf3-9c7a-642229d82c93en
local.identifier.urlhttps://www.scopus.com/pages/publications/85041671272en
local.type.statusPublisheden

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