Lyman Break Galaxies: Their Progenitors and Descendants

We study the evolution of Lyman Break Galaxies (LBGs) from z=5 to z=0 bytracing the merger trees of galaxies in a large-scale hydrodynamic simulationbased on a Lambda cold dark matter model. In particular, we emphasize on therange of properties of the sample selected by the rest-frame V band luminosity,in accordance with recent near-IR observations. The predicted rest-frame V bandluminosity function agrees well with the observed one when dust extinction istaken into account. The stellar content and the star formation histories ofLBGs are also studied. We find that the LBGs intrinsically brighter thanMv=-21.0 at z=3 have stellar masses of at least 10^9\Msun, with a median of10^{10}h^{-1}\Msun. The brightest LBGs (Mv<-23) at z=3 merge intoclusters/groups of galaxies at z=0, as suggested from clustering studies ofLBGs. Roughly one half of the galaxies with -23

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