Evolution of the total mass over time for 15 bar-like galaxies. Lines show the total galaxy mass in dark matter (blue), stars (red), and gas (green). The dark masses are given in units of 10¹¹ M_⊙, while the stellar and gas masses are in units of 10¹⁰ M_⊙. Galaxies are identified by their subhalo ID numbers at z = 0, shown on the right of each panel. Vertical dashed lines indicate the time of bar formation.