Number of single stars and binary systems (n = N_single + N_bin; panel a), the fraction of remaining binary systems (N_bin/n₀; panel b), single stars (N_single/n₀; panel c), and hot stars with T_eff > 20 000 K (N_hot/n₀; panel d) as a function of time for the models with ω₀ = 0.6 and ω₀ = 1.8. The term n₀ is the initial number of single stars and binary systems. N_bin, N_single, N_hot are the number of remaining binary systems, single stars, and hot stars. The colors represent models with different N (total initial number of stars), f_bin (initial binary fraction) and Z (metallicity). Line styles represent simulations with different ω₀.