EAS Publications Series
Volume 17, 2005Element Stratification in Stars: 40 Years of Atomic Diffusion
|Page(s)||209 - 214|
|Published online||13 January 2006|
G. Alecian, O. Richard and S. Vauclair (eds)
EAS Publications Series, 17 (2005) 209-214
Turbulent transport in stellar radiative zones
Laboratoire d'Astrophysique de Toulouse et Tarbes, Observatoire Midi-Pyrénées,
14 avenue É. Belin, 31400 Toulouse,
2 Département de Physique, Université de Montréal, CP. 6128, Succ. A, Montréal, Québec H3C 3J7, Canada
Abundances anomalies and helioseismology provide constraints on the turbulent transport of chemical species in stellar radiative zone. We use these constraints to derive upper bounds on the velocity and lengthscale of the vertical turbulent motions. We also present numerical simulations showing that a strong anisotropy between horizontal and vertical motions could help understand the observed transport.
© EAS, EDP Sciences, 2005
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