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American Astronomical Society, Astrophysical Journal, 1(841), p. 8, 2017

DOI: 10.3847/1538-4357/aa6d64

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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

This paper is available in a repository.
This paper is available in a repository.

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Data provided by SHERPA/RoMEO

Abstract

We present the results of clustering analyses of Lyman break galaxies (LBGs) at $z ∼ 3$, $4$, and $5$ using the final data release of the Canada--France--Hawaii Telescope Legacy Survey (CFHTLS). Deep- and wide-field images of the CFHTLS Deep Survey enable us to obtain sufficiently accurate two-point angular correlation functions to apply a halo occupation distribution analysis. The mean halo masses, calculated as $〈 M_{h} 〉 = 10^{11.7} - 10^{12.8} h^{-1} M_{⊙}$, increase with stellar-mass limit of LBGs. The threshold halo mass to have a central galaxy, $M_{{\rm min}}$, follows the same increasing trend with the low-$z$ results, whereas the threshold halo mass to have a satellite galaxy, $M_{1}$, shows higher values at $z = 3 - 5$ than $z = 0.5 - 1.5$ over the entire stellar mass range. Along with considering the low satellite fractions in high-$z$, these results suggest that satellite galaxies form inefficiently within dark haloes at $z=3-5$ even for less massive satellites with $M_{⋆} 3$, and with keeping the constant star-formation efficiency indicates that mass growth rates of stellar components and dark haloes are comparable at $3