2003/01/14 by S. Théado, Sylvie Theado, S. Vauclair +1
Physics and Astronomy · #Astrophysics and Star Formation Studies #Solar and Space Plasma Dynamics #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1086/368260
published as Astrophys.J. 587 (2003) 784-790 · 11 printed pages, 9 figures. ApJ, in press, April 20, 2003
arxiv created 2003/01/14 · openalex publication_date 2003/04/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
In the first paper of this series, we discussed analytically, in an approximate way, the mixing processes that occur in slowly rotating stars when the feedback effects due to the diffusion-induced μ-gradients are introduced in the computations. We found that the classical scheme of meridional circulation was dramatically modified, with important possible consequences. Here we present a complete two-dimensional numerical simulation of these processes in a static stellar model. The helium microscopic diffusion and the meridional advection are computed simultaneously, so that we can follow the evolution of the abundances and mixing processes in the radiative zone. Most of the effects discussed in Paper I are confirmed. Some consequences will be discussed in Paper III.