Status and future of hydrodynamical model atmospheres

Hans-Günter Ludwig, Arunas Kucinskas

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingResearchpeer-review

1 Citation (SciVal)


Since about 25 years ago work has been dedicated to the development of hydrodynamical model atmospheres for cool stars (of A to T spectral type). Despite their obviously sounder physical foundation in comparison with standard hydrostatic models, their general application has been rather limited. In order to understand why this is, and how to progress, we review the present status of hydrodynamical modelling of cool star atmospheres. The development efforts were and are motivated by the theoretical interest of understanding the dynamical processes operating in stellar atmospheres. To show the observational impact, we discuss examples in the fields of spectroscopy and stellar structure where hydrodynamical modelling provided results on a level qualitatively beyond standard models. We stress present modelling challenges, and highlight presently possible and future observations that would be particularly valuable in the interplay between model validation and interpretation of observables, to eventually widen the usage of hydrodynamical model atmospheres within the astronomical community.
Original languageEnglish
Title of host publicationEuropean Space Agency, (Special Publication) ESA SP
PublisherEuropean Space Agency
Publication statusPublished - 2005
Event13th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun - Hamburg, Germany
Duration: 2004 Jul 52004 Jul 9

Publication series

ISSN (Print)0379-6566
ISSN (Electronic)1609-042X


Conference13th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun

Subject classification (UKÄ)

  • Astronomy, Astrophysics and Cosmology


  • Hydrodynamic model
  • Developments
  • Star atmospheres
  • Stellar atmospheres


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