Kippenhahn diagram for the standard model (top) and the set2-h10 model (bottom). The panels from left to right represent: Left: evolution from ZAMS to TAMS (defined as abundance of H first drops below 10⁻⁴ in the stellar core). Center: evolution from the TAMS to 90% of the remaining time. Right: final 10% of the post-TAMS evolution. The ordinate is the mass coordinate that runs from the center of the star to the surface. The nuclear energy generation rates are indicated by the different shades of blue. The green hatches indicate zones in which the energy transport is dominated by convection.