Poster Abstracts

Name/Affiliation:  Alexander Berkner (University of Hamburg)

Title:  Treatment of Molecules in 3D NLTE Radiative Transfer

The photosphere of cool stars is both rich in molecules and an environment where the assumption of LTE can not be upheld. Unfortunately, detailed 3D non-LTE calculations involving molecules are hardly feasible with current computers. For this reason, we present our implementation of the superlevel technique, in which molecular levels are sorted into superlevels, to reduce the number of unknowns in the rate equations and, thus, the computational effort and memory requirements involved, and show the results of our first tests against the 1D implementation of the same method.