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Hunting down giant cells in deep stellar convective zones

Published online by Cambridge University Press:  12 August 2011

Nicolas Bessolaz  and
Allan Sacha Brun
Nicolas Bessolaz
Affiliation:
CEA Saclay, DSM/IRFU/SAp, 91191 Gif-sur-Yvette Cedex, France email: [email protected]
Allan Sacha Brun
Affiliation:
CEA Saclay, DSM/IRFU/SAp, 91191 Gif-sur-Yvette Cedex, France email: [email protected]
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Abstract

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3D high resolution simulations for the convective zone of a 4Myr old 0.7 M⊙ pre-main sequence star in gravitational contraction are carried out with different radial density contrast using the pseudo spectral ASH code (Brun et al. 2004). We extract giant cells signal from the complex surface convective patterns by using a wavelet analysis. We then characterize them by estimating their lifetime and rotation rate according to the density contrast.

Keywords

convection - stars : pre-main sequencelow-massrotation - turbulence
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S271: Astrophysical Dynamics: From Stars to Galaxies , June 2010 , pp. 365 - 366
Copyright
Copyright © International Astronomical Union 2011

References

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