The effects of radiative heat loss from the convective element, and of helium flux, on overshooting in stellar convective cores

Abstract

The non-local mixing-length theory of stellar convective cores by Maeder is extended to include the effects of radiative heat loss from the convective element, and of helium flux. The radiative heat loss tends to enlarge the overshooting region, although it barely changes the size of the overshooting core for the ordinarily accepted size of the convective element. The helium gradient seems negligible in the overshooting region