Evolutionary tracks in effective temperature T_eff vs. surface gravity log g plots, including pre-MS (thin line), MS, and SGB phases (thick line). The horizontal and vertical dotted lines correspond to the allowed 1σ ranges of the respective parameters, according to Table 6. The top panel shows the primary component of V746 Cas for the two values of its mass m₁ = 5.6 M_⊙ and 6.7 M_⊙. The bottom panel shows the tertiary for m₃ = 4.6 M_⊙ and 6.0 M_⊙.