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Simulations of stellar convection, pulsation and semiconvection

Published online by Cambridge University Press:  12 August 2011

Herbert J. Muthsam ,
Friedrich Kupka ,
Eva Mundprecht ,
Florian Zaussinger ,
Hannes Grimm-Strele  and
Natalie Happenhofer
Herbert J. Muthsam
Affiliation:
Faculty of Mathematics, University of Vienna, Nordbergstrasse 15, A-1090 Vienna, Austria email: herbert.muthsam@univie.ac.at
Friedrich Kupka
Affiliation:
Faculty of Mathematics, University of Vienna, Nordbergstrasse 15, A-1090 Vienna, Austria email: herbert.muthsam@univie.ac.at
Eva Mundprecht
Affiliation:
Faculty of Mathematics, University of Vienna, Nordbergstrasse 15, A-1090 Vienna, Austria email: herbert.muthsam@univie.ac.at
Florian Zaussinger
Affiliation:
Faculty of Mathematics, University of Vienna, Nordbergstrasse 15, A-1090 Vienna, Austria email: herbert.muthsam@univie.ac.at Max Planck Institute for Astrophysics, Karl Schwarzschildstrasse 1, D-85741 Garching, Germany
Hannes Grimm-Strele
Affiliation:
Faculty of Mathematics, University of Vienna, Nordbergstrasse 15, A-1090 Vienna, Austria email: herbert.muthsam@univie.ac.at
Natalie Happenhofer
Affiliation:
Faculty of Mathematics, University of Vienna, Nordbergstrasse 15, A-1090 Vienna, Austria email: herbert.muthsam@univie.ac.at
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Abstract

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We report on modelling in stellar astrophysics with the ANTARES code. First, we describe properties of turbulence in solar granulation as seen in high-resolution calculations. Then, we turn to the first 2D model of pulsation-convection interaction in a cepheid. We discuss properties of the outer and the HeII ionization zone. Thirdly, we report on our work regarding models of semiconvection in the context of stellar physics.

Keywords

Sun: granulationstars: oscillationsstars: variables: Cepheidsstars: interiors
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S271: Astrophysical Dynamics: From Stars to Galaxies , June 2010 , pp. 179 - 186
Copyright
Copyright © International Astronomical Union 2011

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