A New Stellar Atmosphere Grid-in 3D
Abstract
The main limitation of atmosphere models of late-type stars is the, at best, sketchy treatment of convection. Because the top of the outer convection zone of such stars is located in the photosphere, convection has a large effect on both the atmospheric structure and the emergent spectrum. I present the first results from a grid of 3D, non-grey, radiation-coupled, convection simulations for a range of atmospheric parameters. These results include calibration of the mixing-length, T-τ relations and granulation spectra.
- Publication:
-
Unsolved Problems in Stellar Physics: A Conference in Honor of Douglas Gough
- Pub Date:
- November 2007
- DOI:
- 10.1063/1.2818962
- Bibcode:
- 2007AIPC..948..141T
- Keywords:
-
- 97.10.Ex;
- 95.30.Tg;
- 97.10.Cv;
- Stellar atmospheres;
- radiative transfer;
- opacity and line formation;
- Thermodynamic processes conduction convection equations of state;
- Stellar structure interiors evolution nucleosynthesis ages