NLTE Analysis of Spectra: OBA Stars

Chapter
Part of the GeoPlanet: Earth and Planetary Sciences book series (GEPS)

Abstract

Methods of calculation of NLTE model atmosphere are discussed. The NLTE trace element procedure is compared with the full NLTE model atmosphere calculation. Differences between LTE and NLTE atmosphere modelling are evaluated. The ways of model atom construction are discussed. Finally, modelling of expanding atmospheres of hot stars with winds is briefly reviewed.

Keywords

Stars: atmospheres Stars: winds outflows Radiative transfer Atomic processes Radiation: dynamics 

Notes

Acknowledgments

J. K. would like to thank Dr. Ewa Niemczura for inviting him to the Spring School of Spectroscopic Data Analyses in Wrocław. B. Š. thanks the Ministry of Education and Science of Republic of Serbia for supporting this work through the project 176002 “Influence of collisions on astrophysical plasma spectra”. The authors are also grateful to all referees (Ivan Hubeny and both anonymous ones) for their invaluable comments. This work was partly supported by the project 13-10589S of the Grant Agency of the Czech Republic (GA ČR).

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  1. 1.Astronomický ústav AV ČROndřejovCzech Republic
  2. 2.Matematički Institut SANUBeogradRepublic of Serbia

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