Modelling Stars
- Which layers?
- Interior (nuclear reactions, element diffusion)
- Envelope (ionization, convection)
- Photosphere (non-local radiation, opacities, molecule formation)
- Chromosphere (shocks, non-LTE)
- Wind formation region, shells (dust formation, radiation pressure)
- Time-scales
- Spatial scales
- Density and temperature range
- Equilibrium versus non-equilibrium
- Local versus non-local
- Detailed modelling of effects versus "averaging" of non-resolved phenomena