Abstract:The discovery of massive galaxies at high redshifts, especially the passive ones, poses a big challenge for the current standard galaxy formation models. Here we use the semi-analytic galaxy formation model developed by Henriques et al. to explore the formation and evolution of massive galaxies (MGs, stellar-mass M * > 10 11 M ). Different from previous works, we focus on the ones just formed (e.g. just reach 10 11 M ). We find that most of the MGs are formed around z = 0.6, with the earliest formation at z > … Show more
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