Sulfur Abundances in Orion B Stars

Details Sulfur Abundances in Orion B Stars Sulfur Abundances in Orion B Stars

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010iaus..265..358d&link_type=abstract

Chemical Abundances in the Universe: Connecting First Stars to Planets, Proceedings of the International Astronomical Union, IAU

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Stars: Early-Type, Stars: Abundances, (Galaxy:) Open Clusters And Associations: Individual (Ori Ob1)

Scientific paper

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.

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