Fig. 4

Location of models in the (a1,a0) plane at fixed Δν. Colors indicate the amount of core overshooting: αov = 0 (gray), 0.1 (blue), 0.15 (cyan), 0.2 (green), 0.25 (red), 0.3 (magenta). Open squares indicate models with a convective core, and crosses, models with radiative cores. The black open circles indicate models that are in the post-main-sequence (Xc< 10-2).
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