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Time Dependent Convection vs. Frozen Convection Approximations

Published online by Cambridge University Press:  20 June 2007

C.W. Straka ,
Y. Lebreton ,
M.J.P.F.G. Monteiro ,
A. Grigahcène ,
M.-A. Dupret  and
R. Garrido
A. Grigahcène
Affiliation:
Algiers Observatory-CRAAG, BP. 63 Bouzareah, 16340 Algiers, Algeria IAA-CSIC, Ap. 3004, 18080 Granada, Spain
M.-A. Dupret
Affiliation:
Observatory of Paris, LESIA, CNRS UMR 8109, 92195 Meudon, France
R. Garrido
Affiliation:
IAA-CSIC, Ap. 3004, 18080 Granada, Spain
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Abstract

The approximation known as Frozen Convection has been widely used in the context of stellar oscillations due to the lack of a Time Dependent Convection theory. This approximation supposes to neglect the interaction between convection and oscillations and there are different ways to do it. The choice can affect theoretical predictions concerning the non-adiabatic treatment of the stellar oscillations. In fact, fictitious excitation or damping of the pulsation modes can be produced depending on the approximation used.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 26: Stellar Evolution and Seismic Tools for Asteroseismology - Diffusive Processes in Stars and Seismic Analysis , 2007 , pp. 137 - 144
Copyright
© EAS, EDP Sciences, 2007

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