3D distribution models of Ca, Cr, and Fe in a magnetic CP star atmosphere with anisotropic wind

ABSTRACT We present time-dependent atomic diffusion calculations for Ca, Cr, and Fe in a stellar magnetic atmosphere including an anisotropic wind. For three different models of mass-loss rates (or wind), we obtain 3D description the entire atmosphere. In two these models, rate varies according to field inclination, assumed geometry being non-axisymmetric. When dipolar component dominates, find that ring-like abundance structures will be prominent. Spot-like distributions can also exist geometry. Abundance turn out highly sensitive model. The results are discussed compared observational model real chemically peculiar star (θ Aurigae) features parameters close those have adopted our calculations.