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ABSTRACT

Canuto 2000

Canuto, V.M., 2000: Semiconvection and overshooting: Schwarzschild and Ledoux criteria revisited. Astrophys. J., 534, L113-L115, doi:10.1086/312654.

We show that the Schwarzschild formalism, if accepted as the description of the structure of a semiconvective region, necessarily implies overshooting. The Ledoux formalism (if accepted) can be used without overshooting, provided a new relation for the mixing-length parameter α is satisfied. Should the latter not be satisfied, the Ledoux formalism would also require overshooting, that is, a nonlocal convection model.

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