Park, JaehongKim, Han SeekLiu, ChuanwuTrenti, MicheleDuffy, Alan R.Geil, Paul M.Mutch, Simon J.Poole, Gregory B.Mesinger, AndreiWyithe, J. Stuart B.2026-01-022026-01-020035-8711ORCID:/0000-0001-7956-9758/work/195266038https://hdl.handle.net/1885/733802545We 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.This 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).14enPublisher Copyright: © 2017 The Authors.Cosmology: theoryDark agesFirst starsGalaixes: high-redshiftGalaxies: haloesLarge-scale structure of UniverseReionization201710.1093/MNRAS/STX188485041671272