Where are the z=4 Lyman Break Galaxies? Results from Conditional Luminosity Function Models of Luminosity-dependent Correlation Functions

Abstract

Using the conditional luminosity function (CLF) -- the luminosity distribution of galaxies in a dark matter halo -- as a way to model galaxy statistics, we study how z=4 Lyman Break Galaxies (LBGs) are distributed in dark matter halos. For this purpose, we measure luminosity-dependent clustering of LBGs in the Subaru/XMM-Newton Deep Field by separating a sample of 16,920 galaxies to three magnitude bins in i'-band between 24.5 and 27.5. Our models fits to data show a possible trend for more luminous galaxies to appear as satellites in more massive halos. The satellite fraction of galaxies at z=4 in these magnitude bins is 0.13 to 0.3, 0.09 to 0.22, and 0.03 to 0.14, respectively, where the 1 sigma ranges account for differences coming from two different estimates of the z=4 LF from the literature. To jointly explain the LF and the large-scale linear bias factor of z=4 LBGs as a function of rest-UV luminosity requires central galaxies to be brighter in UV at z =4 than present-day galaxies in same dark matter mass halos. Moreover, UV luminosity of central galaxies in halos with total mass greater than roughly 10^{12} M_sun must decrease from z=4 to today by an amount more than the luminosity change for galaxies in halos below this mass. This mass-dependent luminosity evolution is preferred at more than 3 sigma confidence level compared to a pure-luminosity evolution scenario where all galaxies decrease in luminosity by the same amount from z=4 to today. The scenario preferred by the data is consistent with the ``down-sizing'' picture of galaxy evolution.

arXiv comment13 pages, 9 figures; accepted for publication in Mon. Not. Roy. Astron. Soc.; low resolution figures submitted here. A pdf file with high resolution figures available at http://www.cooray.org/Cooray-Ouchi.pdf

References in corpus (74)

• The Sloan Digital Sky Survey: Technical Summary
• A Universal Density Profile from Hierarchical Clustering
• Large scale bias and the peak background split
• The 2dF Galaxy Redshift Survey: Spectra and redshifts
• Profiles of dark haloes: evolution, scatter, and environment
• The Formation of Galactic Disks
• Halo Models of Large Scale Structure
• Ellipsoidal collapse and an improved model for the number and spatial distribution of dark matter haloes
• Mass function of dark matter halos
• New Insight on Galaxy Formation and Evolution from Keck Spectroscopy of the Hawaii Deep Fields
• Rest-Frame Ultraviolet Spectra of z~3 Lyman Break Galaxies
• Analytic model for galaxy and dark matter clustering
• Halo occupation numbers and galaxy bias
• Clustering of Galaxies in a Hierarchical Universe: I. Methods and Results at z=0
• The Dark Side of the Halo Occupation Distribution
• The Halo Occupation Distribution: Towards an Empirical Determination of the Relation Between Galaxies and Mass
• Theoretical Models of the Halo Occupation Distribution: Separating Central and Satellite Galaxies
• The Luminosity and Color Dependence of the Galaxy Correlation Function
• The Rest Frame Optical Spectra of Lyman Break Galaxies: Star Formation, Extinction, Abundances, and Kinematics
• Subaru Prime Focus Camera -- Suprime-Cam --
• The age dependence of halo clustering
• How Many Galaxies Fit in a Halo? Constraints on Galaxy Formation Efficiency from Spatial Clustering
• Constraining Galaxy Formation and Cosmology with the Conditional Luminosity Function of Galaxies
• Galaxy Clustering in Early SDSS Redshift Data
• Linking halo mass to galaxy luminosity
• A Large Structure of Galaxies At Redshift z~3 and its Cosmological Implications
• The 2dF Galaxy Redshift Survey: The dependence of galaxy clustering on luminosity and spectral type
• The Nature of Galaxy Bias and Clustering
• Subaru Deep Survey V. A Census of Lyman Break Galaxies at z=4 and 5 in the Subaru Deep Fields: Photometric Properties
• The COMBO-17 Survey: Evolution of the Galaxy Luminosity Function from 25,000 Galaxies with 0.2<z<1.2
• The 2dF Galaxy Redshift Survey: Luminosity dependence of galaxy clustering
• The Epoch of Galaxy Formation
• The Halo Occupation Distribution and the Physics of Galaxy Formation
• The Spatial Clustering of Star-forming Galaxies at Redshifts 1.4<z<3.5
• On Departures From a Power Law in the Galaxy Correlation Function
• GaBoDS: The Garching-Bonn Deep Survey; IV. Methods for the Image reduction of multi-chip Cameras
• The UV Galaxy Luminosity Function in the Local Universe from GALEX Data
• A marked correlation function analysis of halo formation times in the Millennium Simulation
• High-Order Correlations of Peaks and Halos: a Step toward Understanding Galaxy Biasing
• The faint end of the galaxy luminosity function
• Subaru Deep Survey VI. A Census of Lyman Break Galaxies at z=4 and 5 in the Subaru Deep Fields: Clustering Properties
• The DEEP2 Galaxy Redshift Survey: Clustering of Galaxies in Early Data
• The Large-scale and Small-scale Clustering of Lyman-Break Galaxies at 3.5 < z< 5.5 from the GOODS survey
• Clustering Segregation With UV Luminosity in Lyman-Break Galaxies at z~3 and Its Implications
• Halo Model at Its Best: Constraints on Conditional Luminosity Functions from Measured Galaxy Statistics
• The Subaru Deep Field: The Optical Imaging Data
• The evolution of the luminosity functions in the FORS Deep Field from low to high redshift: I. The blue bands
• Galaxy Halo Occupation at High Redshift
• Galaxy Occupation Statistics of Dark Matter Haloes: Observational Results
• Definitive Identification of the Transition between Small- to Large-Scale Clustering for Lyman Break Galaxies
• The seeds of rich galaxy clusters in the Universe
• The Evolution of the Optical and Near-Infrared Galaxy Luminosity Functions and Luminosity Densities to z~2
• Interpreting the Observed Clustering of Red Galaxies at z~3
• The B-Band Luminosity Function of Red and Blue Galaxies up to z=3.5
• The Dependence of the Occupation of Galaxies on the Halo Formation Time
• The Effects of Photoionization on Galaxy Formation -- III: Environmental Dependence in the Luminosity Function
• Clustering of Lyman Break Galaxies at z=4 and 5 in The Subaru Deep Field: Luminosity Dependence of The Correlation Function Slope
• What is L*?: Anatomy of the Galaxy Luminosity Function
• The Clustering Properties of Lyman-Break Galaxies at Redshift z~3
• Clustering Properties of Galaxies at z~4 in the Subaru/XMM Deep Survey Field
• Properties of host haloes of Lyman-break galaxies and Lyman-alpha Emitters from their number densities and angular clustering
• The Masses, Ancestors and Descendents of Extremely Red Objects: Constraints from Spatial Clustering
• Galaxy Formation at z~3: Constraints from Spatial Clustering
• Cluster Merger Variance and the Luminosity Gap Statistic
• Constraints on the Cosmic Structure Formation Models from Early Formation of Giant Galaxies
• Dissipationless Merging and the Assembly of Central Galaxies
• A Brighter Past: Galaxy Luminosity Function At High Redshifts
• The Oxford-Dartmouth Thirty Degree Survey II: Clustering of Bright Lyman Break Galaxies - Strong Luminosity Dependent Bias at z=4
• On the Spatial Correlations of Lyman Break Galaxies
• Keck Deep Fields. I. Observations, Reductions, and the Selection of Faint Star-Forming Galaxies at Redshifts z~4, 3, and 2
• A Divided Universe: Red and Blue Galaxies and their Preferred Environments
• Pair Correlations and Merger Bias
• GaBoDS: The Garching-Bonn Deep Survey - III. Lyman-Break Galaxies in the Chandra Deep Field South
• The Rise of Dwarfs and the Fall of Giants: Galaxy Formation Feedback Signatures in the Halo Satellite Luminosity Function

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• Galaxy Evolution from Halo Occupation Distribution Modeling of DEEP2 and SDSS Galaxy Clustering
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• Probing the Diffuse Lyman-alpha Emission on Cosmological Scales: Lyα Emission Intensity Mapping Using the Complete SDSS-IV eBOSS Survey
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