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Convection in the Superadiabatic Layer of Stars

Auteur

Tanner Joel

Institution

Yale University

Theme

Convection, dynamo and flows
Auteur(s) supplémentaire(s)Sarbani Basu, Pierre Demarque and Frank Robinson

Abstract

We perform 3D radiative hydrodynamic simulations to study the properties of convection in the superadiabatic layer of stars. The simulations show differences in both the stratification and turbulent quantities for different types of stars. We extract turbulent pressure and eddy sizes, as well as the $T$-$tau$ relation for different stars and find that they are sensitive to the energy flux and gravity. We also show that contrary to what is usually assumed in the field of stellar atmospheres, the structure and gas dynamics of a turbulent atmosphere cannot be parameterized with $T_{rm eff}$ and $log(g)$ alone.
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