Superposition onto the observed Trumpler 5 CMDs of isochrones for the indicated age and chemical abundances, and for E(B-V) values ranging from 0.58 to 0.72 (in the direction from left to right). The dashed loci are identical to the dashed isochrones for E(B − V) = 0.72 in the respective panels of Fig. 10. The heavy solid curves indicate the location of ZAHB models with masses ranging from 1.0 ℳ_⊙ to 1.46 ℳ_⊙ in the direction of increasing brightness. The evolutionary track for most of the core He-burning phase of the 1.46 ℳ_⊙ ZAHB model is shown as a thin solid curve originating at the bright end of the ZAHB.