Fig. 1. Synthetic CMDs corresponding to constant ψ(t) for the labeled intervals (ψ(t) = 0 otherwise)

Fig. 2. Sketch synthetic CMDs simulating the SFHs of Fornax (left panel) and Carina (right panel)

Fig. 3. Observed CMDs of the two dwarf spheroidal galaxies Fornax (left panel, Fig. 4 in Stetson et al. 1998) and Carina (right panel, Fig. 1 in Smecker-Hane et al. 1996)