3D Model Atmospheres of Red Giant Stars
  We provide a brief overview of the modelling of the atmospheres of red giant stars with the 3D radiation-hydrodynamics code CO5BOLD. We emphasize aspects where 3D modelling provides additional insight beyond standard hydrostatic 1D models, and comment on present modelling challenges. 
Hans-Gunter Ludwig and Matthias Steffen
astro-ph.SR