The initial mass function of the simulations at t = t_ff. Left panel shows the IMF for simulation A, and the right panel shows the IMF for simulation B. The green dashed line represents the Salpeter function. The blue dot-dashed line represents the Chabrier IMF, as fitted to simulation B. A power-law fit is applied to the data above the turn-over mass,  ~1.2 M_⊙ left and  ~0.7 M_⊙ right, and is shown as the solid purple line.