Formation histories for six typical simulated galaxies at z = 0 in the simulations, with different stellar (M_∗) and baryonic (M_b) masses and circular velocities (V_circ). The masses are given in logarithm and in units of M_⊙   h^-1. The circular velocities are given in logarithm and in units of km   s^-1. In each panel, we show the evolution of  (dotted line) and (dashed line) in box A. In box B, we can appreciate F_merger. Box C shows the time evolution of the gas fraction (dotted line), baryonic mass relative to the final one (triple-dot-dashed line) and  (dashed line). Box D shows the star formation efficiency SFRe in yr^-1 and, in box E, we can appreciate the ratio V_rot/V_circ (dashed lines) and s_1.0/V_circ (solid lines) evaluated at R_bar. See text for definitions of variables.