Diffusion and Chemical Transport in Stellar Atmospheres
Abstract
{The current status of particle transport calculations in the atmospheres of ApBp stars is critically described. We emphasize the importance of the inner boundary condition, that is the time-dependent chemical flux and composition below the atmosphere which is determined by the interior evolution. For the nonmagnetic HgMn stars a number of observed anomalies are explained with little arbitrariness, though isotope anomalies and observed variations from star to star are challenging. For the magnetic ApBp stars, detailed quantitative models of the observed mapping and size of anomalies are still lacking. Not all required hydrodynamical ingredients are currently included. }
- Publication:
-
Stellar Magnetism: A Workshop in Honour of the Career and Contributions of John D. Landstreet
- Pub Date:
- November 2020
- Bibcode:
- 2020pase.conf..185M