• Title of article

    Are “realistic” model atmospheres realistic enough?

  • Author/Authors

    Bengt Gustafsson، نويسنده ,

  • Issue Information
    روزنامه با شماره پیاپی سال 2009
  • Pages
    12
  • From page
    185
  • To page
    196
  • Abstract
    During the latest decades the number of papers on stellar chemical abundances has increased dramatically. This is basically reflecting the very great achievements in telescope- and spectrometer-construction technology. The analysis of the resulting stellar spectra, however, is still not up to the standard that is offered by the observational methods. Recent significant advances in the analysis methods (i.e., in constructing model atmospheres and model spectra to compare with the observed ones) is reviewed with the emphasis on the application to abundance analysis of late-type stars. It is found that the very considerable progress that have been made beyond mixing-length convection and LTE is a major break-through for physically consistent modeling. Still, however, further steps must be taken, in particular for the cooler stars, before the situation is fully satisifactory.
  • Keywords
    model atmospheres , Chemical analysis , stars: atmospheres , stars: abundances
  • Journal title
    Proceedings of the International Astronomical Union
  • Serial Year
    2009
  • Journal title
    Proceedings of the International Astronomical Union
  • Record number

    675029