Fig. 3.
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Temperature gradients (real ∇T, adiabatic ∇ad and radiative ∇rad) as a function of m(r) in a sdB evolutionary model having M* = 0.47 M⊙, lq_env = −2.0, and X(He)core = 0.2. Top panel: Throughout the whole star (the orange vertical line indicates the lq_env transition). Bottom panel: Zoom on the overshooting and semiconvection zones.
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