Figure 14: The efficiency of gas conversion into stars, defined as the fraction of baryon mass, expected if the halo accreted its universal fraction of baryons, converted into stars: . The points (as before different symbols correspond to subhalos in three different simulated host halos) show the dependence of on the maximum circular velocity of each subhalo at accretion according to luminosity assignment model of (4). The short-dashed line shows the functional form expected if was controlled by the suppression of gas accretion due to UV heating of intergalactic gas (model 3B of [84]), while long-dashed line shows scaling expected in efficiency was set by supernova feedback (e.g., [140]).