Delay-time distribution of core-collapse supernovae for a population consisting of 70% binary systems (green histogram) compared to the distribution for a population of only single stars (black dashed line). It shows the number of events per logarithmic time bin for a starburst of 10⁶M_⊙ for our standard models. The top axis shows the initial mass of single stars with the corresponding lifetime given in the bottom axis, computed with binary_c. The most striking difference is the fraction of “late” core-collapse supernovae (), after the last massive single star explodes at τ_max,cc ≈ 48Myr. The errors in the fraction above result from variations of our standard assumptions.