A Brighter Past: Galaxy Luminosity Function At High Redshifts
arXiv:astro-ph/0506087 · doi:10.1111/j.1365-2966.2005.09564.x
Abstract
Using the conditional luminosity function -- the luminosity distribution of galaxies in a dark matter halo as a function of the halo mass -- we present an empirical model to describe the redshift evolution of the rest B-band galaxy luminosity function (LF). The model is compared to measured LFs out to a redshift of 3.5, including LFs of galaxy types separated to red and blue galaxies. The increase in the number density of luminous galaxies, at the bright-end of the LF, can be explained as due to a brightening of the luminosity of galaxies present in dark matter halo centers, relative to the luminosity of central galaxies in similar mass halos today. The lack of strong evolution in the faint-end of the LF, however, argues against a model involving pure luminosity evolution at all halo mass scales. The increase in luminosity at the bright-end compensates the rapid decline in the number density of massive halos as the redshift is increased. The decline in group to cluster-mass dark matter halos out to a redshift of ~ 2 is not important as the central galaxy luminosity flattens at halo masses around 10^13 M_sun At redshifts ~ 2 to 3, however, the density of bright galaxies begins to decrease due to the rapid decline in the number density of dark matter halos at mass scales around and below 10^13 M_sun. We compare our predictions to the UV LF of galaxies at redshifts 3 to 6 and the galaxy clustering bias measurements at redshifts ~ 3, and use our models to establish the dark matter halo mass scales of galaxies observed at high redshifts. In general, to explain high-redshift LFs, galaxies in dark matter halos around 10^12 M_sun must increase in luminosity by a factor of ~ 4 to 6 between today and redshift of 6.
19 pages, 15 figure panels; Expanded to extract model parameters related to redshift evolution of central luminosity-halo mass relation from DEEP2, COMBO-17 and several other high-redshift luminosity functions in rest B-band and to discuss halo masses of high-z galaxies. Conclusions strengthened. MNRAS in press
References in corpus (4)
Cited by in corpus (41)
- A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: I. Galaxy Mergers & Quasar Activity
- Modeling Luminosity-Dependent Galaxy Clustering Through Cosmic Time
- Galaxy Evolution from Halo Occupation Distribution Modeling of DEEP2 and SDSS Galaxy Clustering
- Mergers and Bulge Formation in Lambda-CDM: Which Mergers Matter?
- A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: II. Formation of Red Ellipticals
- Cosmic Variance and Its Effect on the Luminosity Function Determination in Deep High z Surveys
- Galaxies at z~6: The UV Luminosity Function and Luminosity Density from 506 UDF, UDF-Ps, and GOODS i-dropouts
- Evolution of the Galaxy - Dark Matter Connection and the Assembly of Galaxies in Dark Matter Halos
- Galaxy Groups in the SDSS DR4: II. halo occupation statistics
- Galaxy Groups in the SDSS DR4: III. the luminosity and stellar mass functions
- Towards a Concordant Model of Halo Occupation Statistics
- z~7-10 Galaxies in the HUDF and GOODS fields, and their UV Luminosity Functions
- Dissipation and Extra Light in Galactic Nuclei: IV. Evolution in the Scaling Relations of Spheroids
- Halo Occupation Distribution Modeling of Clustering of Luminous Red Galaxies
- The Galaxy Luminosity Function during the Reionization Epoch
- Halo Model at Its Best: Constraints on Conditional Luminosity Functions from Measured Galaxy Statistics
- A physical model for the 0 < z < 8 redshift evolution of the galaxy UV luminosity and stellar mass functions
- Angular momentum-Large-scale structure alignments in LCDM models and the SDSS
- Observational Evidence for the Co-evolution of Galaxy Mergers, Quasars, and the Blue/Red Galaxy Transition
- Weak Lensing by Galaxies in Groups and Clusters: I.--Theoretical Expectations
- The subhalo - satellite connection and the fate of disrupted satellite galaxies
- Correcting the z~8 Galaxy Luminosity Function for Gravitational Lensing Magnification Bias
- Overdensities of Y-dropout Galaxies from the Brightest-of-Reionizing Galaxies Survey: A Candidate Protocluster at Redshift z~8
- Modelling galaxy stellar mass evolution from z~0.8 to today
- An analytical model for the accretion of dark matter subhalos
- Constraining the Star Formation Histories in Dark Matter Halos: I. Central Galaxies
- The MicroJy and NanoJy Radio Sky: Source Population and Multi-wavelength Properties
- IR Background Anisotropies in Spitzer GOODS images and constraints on first galaxies
- The influence of halo assembly on galaxies and galaxy groups
- Where are the z=4 Lyman Break Galaxies? Results from Conditional Luminosity Function Models of Luminosity-dependent Correlation Functions
- Local and global environmental effects on galaxies and active galactic nuclei
- An improved limit on the neutrino mass with CMB and redshift-dependent halo bias-mass relations from SDSS, DEEP2, and Lyman-Break Galaxies
- Clustering of the IR Background Light with Spitzer: Contribution from Resolved Sources
- Pair Correlations and Merger Bias
- Taking advantage of photometric galaxy catalogues to determine the halo occupation distribution
- The association between gas and galaxies II: The 2-point correlation function
- Evidence for Merger-Driven Activity in the Clustering of High Redshift Quasars
- Searching For Integrated Sachs-Wolfe Effect Beyond Temperature Anisotropies: CMB E-mode Polarization-Galaxy Cross Correlation
- Galaxy clustering measurements out to redshift z8 from Hubble Legacy Fields
- Galaxy Clusters in the Line of Sight to Background Quasars: II. Environmental effects on the sizes of baryonic halo sizes
- On the accuracy of the high redshift cluster luminosity function