Fig. 9.
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Polar-angle averaged actual temperature gradient ∇act(r) at 312 years after the formation of the second core in the 1 M⊙ case compared to the polar-angle averaged adiabatic gradient ∇ad(ρ(r),T(r)) (see Eq. (7)). Classically, regions with ∇act > ∇ad are convectively unstable. The vertical dashed line indicates the radius of the second core.
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