Same as Fig. 3, but for different core formation times t₀. The top and bottom panels show the cases with f_g = 0.01 and 0.1, respectively. The different colors correspond to different stellar masses. The solid, dashed, and dotted lines show the crossover time measured from the core formation time t_g,cross - t₀, the core growth time t_g,core, and the contraction time t_gcont, respectively. Here, we show the cases with α_turb = 10⁻³.