Dependence of galaxy clustering on UV-luminosity and stellar mass at $z\sim 4-7$

Abstract

We investigate the dependence of galaxy clustering at $z\sim 4-7$ on UV-luminosity and stellar mass. Our sample consists of $\sim$ 10,000 Lyman-break galaxies (LBGs) in the XDF and CANDELS fields. As part of our analysis, the $M_{\star }-M_{\mathrm{UV}}$ relation is estimated for the sample, which is found to have a nearly linear slope of $d{\log }_{10}{M}_{\star }/d{M}_{\mathrm{UV}}\sim 0.44$. We subsequently measure the angular correlation function and bias in different stellar mass and luminosity bins. We focus on comparing the clustering dependence on these two properties. While UV-luminosity is only related to recent starbursts of a galaxy, stellar mass reflects the integrated build-up of the whole star formation history, which should make it more tightly correlated with halo mass. Hence, the clustering segregation with stellar mass is expected to be larger than with luminosity. However, our measurements suggest that the segregation with luminosity is larger with $\simeq 90\%$ confidence (neglecting contributions from systematic errors). We compare this unexpected result with predictions from the \textsc{Meraxes} semi-analytic galaxy formation model. Interestingly, the model reproduces the observed angular correlation functions, and also suggests stronger clustering segregation with luminosity. The comparison between our observations and the model provides evidence of multiple halo occupation in the small scale clustering.

arXiv comment10 pages, 6 figures, 2 tables, accepted for publication in MNRAS

References in corpus (51)

• emcee: The MCMC Hammer
• Stellar population synthesis at the resolution of 2003
• Galactic Stellar and Substellar Initial Mass Function
• The Structure of Cold Dark Matter Halos
• The Dust Content and Opacity of Actively Star-Forming Galaxies
• Starburst99: Synthesis Models for Galaxies with Active Star Formation
• The Average Star Formation Histories of Galaxies in Dark Matter Halos from z=0-8
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey - The Hubble Space Telescope Observations, Imaging Data Products and Mosaics
• Halo Models of Large Scale Structure
• EAZY: A Fast, Public Photometric Redshift Code
• An analytic model for the spatial clustering of dark matter haloes
• Galaxies on FIRE (Feedback In Realistic Environments): Stellar Feedback Explains Cosmologically Inefficient Star Formation
• Galactic star formation and accretion histories from matching galaxies to dark matter haloes
• UV Luminosity Functions at redshifts z~4 to z~10: 10000 Galaxies from HST Legacy Fields
• The Large Scale Bias of Dark Matter Halos: Numerical Calibration and Model Tests
• UV Luminosity Functions from 132 z~7 and z~8 Lyman-Break Galaxies in the ultra-deep HUDF09 and wide-area ERS WFC3/IR Observations
• Optimization of Starburst99 for Intermediate-Age and Old Stellar Populations
• An updated analytic model for the attenuation by the intergalactic medium
• The Origin and Evolution of the Galaxy Mass-Metallicity Relation
• The Effects of Stellar Rotation. II. A Comprehensive Set of Starburst99 Models
• Spectral and Photometric Evolution of Young Stellar Populations: the Impact of Gaseous Emission at Various Metallicities
• MUFASA: Galaxy Formation Simulations With Meshless Hydrodynamics
• The Evolution of the Galaxy Stellar Mass Function at z= 4-8: A Steepening Low-mass-end Slope with Increasing Redshift
• A Library of Theoretical Ultraviolet Spectra of Massive, Hot Stars for Evolutionary Synthesis
• The HST eXtreme Deep Field XDF: Combining all ACS and WFC3/IR Data on the HUDF Region into the Deepest Field Ever
• The Hubble Space Telescope Wide Field Camera 3 Early Release Science data: Panchromatic Faint Object Counts for 0.2-2 microns wavelength
• The Galaxy UV Luminosity Function Before the Epoch of Reionization
• The Large-scale and Small-scale Clustering of Lyman-Break Galaxies at 3.5 < z< 5.5 from the GOODS survey
• CARS: The CFHTLS-Archive-Research Survey II. Weighing dark matter halos of Lyman-break galaxies at z=3-5
• Spitzer IRAC confirmation of z_850-dropout galaxies in the Hubble Ultra Deep Field: stellar masses and ages at z~7
• GOLDRUSH. II. Clustering of Galaxies at $z\sim 4-6$ Revealed with the Half-Million Dropouts Over the 100 deg${}^2$ Area Corresponding to 1 Gpc${}^3$
• Dark-ages reionization and galaxy formation simulation - III. Modelling galaxy formation and the epoch of reionization
• Evolution of Stellar-to-Halo Mass Ratio at z=0-7 Identified by Clustering Analysis with the Hubble Legacy Imaging and Early Subaru/Hyper Suprime-Cam Survey Data
• The Angular Correlation Function and Hierarchical Moments of 70000 Faint Galaxies to R=23.5
• Ultradeep IRAC Imaging Over The HUDF And GOODS-South: Survey Design And Imaging Data Release
• Measurement of Galaxy Clustering at z~7.2 and the Evolution of Galaxy Bias from 3.8<z<8 in the XDF, GOODS-S AND GOODS-N
• T-PHOT version 2.0: improved algorithms for background subtraction, local convolution, kernel registration, and new options
• The Build-Up of the Hubble Sequence in the COSMOS Field
• The First Billion Years project: constraining the dust attenuation law of star-forming galaxies at z $\simeq$ 5
• Dark-ages Reionization and Galaxy Formation Simulation - X. The small contribution of quasars to reionization
• Dark-ages reionization & galaxy formation simulation IV: UV luminosity functions of high-redshift galaxies
• Dark-ages Reionization & Galaxy Formation Simulation I: The dynamical lives of high redshift galaxies
• A suppressed contribution of low mass galaxies to reionization due to supernova feedback
• Convergence properties of halo merger trees; halo and substructure merger rates across cosmic history
• The Galaxy--Halo Connection in High-Redshift Universe: Details and Evolution of Stellar-to-Halo Mass Ratios of Lyman Break Galaxies on CFHTLS Deep Fields
• The VIMOS Ultra Deep Survey. Luminosity and stellar mass dependence of galaxy clustering at z~3
• Low-mass galaxy formation and the ionizing photon budget during reionization
• The clustering of dark matter halos: scale-dependent bias on quasi-linear scales
• The clustering and halo occupation distribution of Lyman-break galaxies at $z\sim 4$
• Dark-ages reionization and galaxy formation simulation XI: Clustering and halo masses of high redshift galaxies

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• Semi-analytic forecasts for JWST -- VI. Simulated lightcones and galaxy clustering predictions
• Cosmology with dropout selection: Straw-man surveys and CMB lensing
• Limits to Rest-Frame Ultraviolet Emission From Far-Infrared-Luminous z~6 Quasar Hosts
• Nature and Nurture? Comparing Ly$\alpha$ Detections in UV-Bright and Fainter [O III]+H$\beta$ Emitters at $z\sim 8$ With Keck/MOSFIRE
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