Galaxy bias as function of luminosity and redshift. Left panels: bias for full and red samples (top and bottom panels) as function of corrected luminosity threshold L′. The dashed line represents Eq. (29). Right panels: computed bias for several luminosity threshold samples as function of redshift. Error bars were derived from the parametric form shown on the left (dashed line), whereas the dotted lines show the bias evolution computed from our model, assuming a redshift-independent HOD parameter set.