1999/06/08 by K. Werner, S. Dreizler, Werner, K. +1
Engineering · Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #Material Science and Thermodynamics #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9906130
accepted for publication in The Journal of Computational and Applied Mathematics, Computational Astrophysics, eds. H. Riffert, K. Werner
arxiv created 1999/06/08 · openalex publication_date 1999/06/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We introduce the classical stellar atmosphere problem and describe in detail its numerical solution. The problem consists of the solution of the radiation transfer equations under the constraints of hydrostatic, radiative and statistical equilibrium (non-LTE). We outline the basic idea of the Accelerated Lambda Iteration (ALI) technique and statistical methods which finally allow the construction of non-LTE model atmospheres considering the influence of millions of metal absorption lines. Some applications of the new models are presented.