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1 results

  • Sulfur Abundances in Orion B Stars

  • Simone Daflon, Katia Cunha, Ramiro de la Reza, Jon Holtzman, Cristina Chiappini
  • Journal:
    Proceedings of the International Astronomical Union / Volume 5 / Issue S265 / August 2009
    Published online by Cambridge University Press:
    09 March 2010, pp. 358-359
    Print publication:
    August 2009
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  • Sulfur abundances are derived for a sample of ten B MS star members of the Orion association. The analysis is based on LTE model atmospheres and non-LTE line formation theory by means of spectrum synthesis analysis of Sii and Siii lines. The abundance distribution obtained for the Orion targets is homogeneous within the errors in the analysis: A(S)=7.15±0.05. This abundance result is in agreement with the solar value and with results for the Orion nebula. The sulfur abundances for Orion combined with previous results for other OB-type stars produce a relatively shallow sulfur abundance gradient with a slope of −0.037±0.012 dex Kpc−1.