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2005MNRAS.364..303C - Mon. Not. R. Astron. Soc., 364, 303-318 (2005/November-3)
A brighter past: galaxy luminosity function at high redshifts.
COORAY A.
Abstract (from CDS):
Based on a comparison of our predictions to the measured ultraviolet (UV) LF of galaxies at redshifts ∼3, we estimate the probability distribution of halo masses to host Lyman break galaxies (LBGs). This probability for galaxies brighter than AB-absolute magnitudes of -21, with a number density of ∼5x10–3h3Mpc–3, peaks at a halo mass of ∼7x1011h–1M☉with a 68 per cent confidence level of (4-21)x1011h–1M☉. These estimates are consistent with the mass estimates for LBGs using two-point clustering statistics and recent estimates of halo masses based on spectroscopic observations. For galaxies brighter than AB-absolute magnitudes of -21 at z∼ 6, the halo mass scale is a factor of ∼2 smaller; the LF predictions at z∼ 6 are consistent with measured estimates in the literature. Based on the models, we also predict the LF of galaxies at redshifts greater than 6 and also the bias factor of galaxies at redshifts greater than 3; these predictions will soon be tested with observational data. In general, to explain high-redshift LFs, galaxies in dark matter haloes around 1012M☉must increase in luminosity by a factor of ∼4-6 between today and redshift of 6.
Abstract Copyright: The Author. Journal compilation © 2005 RAS
Journal keyword(s): galaxies: clusters: general - galaxies: formation - galaxies: fundamental parameters - cosmology: observations - cosmology: theory - large-scale structure
Simbad objects: 1
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