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New models for the convective flux in stellar atmospheres

Published online by Cambridge University Press:  25 May 2016

F. Kupka
F. Kupka*
Affiliation:
Institute for Astronomy, Univ. of Vienna, Türkenschanzstr. 17, A-1180 Vienna, Austria

Abstract

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Over the past decades various forms of the mixing length theory (MLT) have been used to describe convection in stellar atmospheres. Recent advances in turbulence theory now allow for major improvements in modelling thermal convection. We review several models for convection which have been derived from turbulence theory, and describe one of them, the “CM model”, in detail. The CM model has been used in several stellar evolution and helioseismology codes during the last four years and has now been applied to model atmospheres. An overwiew comparing stellar atmosphere models based on the CM formulation with its MLT predecessors indicates improvements on model atmospheres for A and F stars.

Type
Session V: “Next Generation Model Atmospheres”
Information
Symposium - International Astronomical Union , Volume 176: Stellar Surface Structure , 1996 , pp. 557 - 564
Copyright
Copyright © Kluwer 1996 

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