Semi-analytical galaxy formation models and the high redshift universe
  Semi-analytical models of galaxy formation based on hierarchical clustering now make a wide range of predictions for observable properties of galaxies at low and high redshift. This article concentrates on 2 aspects: (1) Self-consistent modelling of dust absorption predicts a mean UV extinction A_{UV} ~ 1 mag, depending only weakly on redshift, and similar to observational estimates. (2) The models predict that the Lyman-break galaxies found at z ~ 3 should be strongly clustered with a comoving correlation length r_0 = 4-7 Mpc/h (depending on the cosmology), in good agreement with subsequent observational determinations. 
Cedric Lacey (1), Carlton Baugh (2), Shaun Cole (2), Carlos Frenk (2),   Fabio Governato (2) ((1) Theoretical Astrophysics C...