The Broadening of Metallic Lines in Cool Stars

  • S. D. Anstee
  • B. J. O’Mara
  • J. E. Ross
Conference paper
Part of the International Astronomical Union / Union Astronomique Internationale book series (IAUS, volume 189)


A theory for the broadening of spectral lines by collisions with atomic hydrogen developed by Anstee and O’Mara [1] is described and when applied to strong lines of elements in the sun leads to abundances which are independent of non-thermal motions in the photosphere and in excellent agreement with meteoritic values. In the case of the solar abundance of iron the results lead to a resolution of recent conflict concerning possible differences between the abundance of iron in the sun and meteorites. Excellent results obtained with the Mg b-lines permit these lines to be used in abundance determinations in other stars and also makes them particularly useful in determining the temperature structure in cool stars.


Interaction Energy Strong Line Radial Wave Function Cool Star Solar Abundance 
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Copyright information

© Springer Science+Business Media Dordrecht 1997

Authors and Affiliations

  • S. D. Anstee
    • 1
  • B. J. O’Mara
    • 1
  • J. E. Ross
    • 1
  1. 1.The University of QueenslandSt. LuciaAustralia

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