Star formation histories of the simulated dwarf galaxies. Left: SFR as a function of time. The SFR is averaged over a time-scale of 10 Myr. The solid curves are the results from the high-resolution runs while the dotted curves are from corresponding low-resolution runs. Right: Cumulative mass of newly formed stars in our simulations. The SFRs exhibit good convergence with resolution. The 0.02 Z_⊙/noRT simulations show the most significant difference in cumulative stellar mass between the low- and high-resolution simulations; nonetheless, the difference remains within a factor of two.