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Article overview
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Sulphur abundances in disk stars: a correlation with silicon | Y.Q. Chen
; P.E. Nissen G. Zhao
; M. Asplund
; | Date: |
5 Jun 2002 | Subject: | astro-ph | Affiliation: | China), P.E. Nissen (Denmark) G. Zhao (China), M. Asplund (Sweden | Abstract: | We have performed new determinations of sulphur and silicon abundances for a sample of 26 disk stars based on high-resolution, high signal-to-noise spectra. The results indicate a solar [S/Fe] for [Fe/H] >-0.3, below which [S/Fe] increases to ~0.25 dex at [Fe/H] =-1.0. We find that there is a good correlation between [S/H] and [Si/H], indicating the same nucleosynthetic origin of the two elements. It seems that the ratio of sulphur to silicon does not depend on metallicity for [Fe/H]> -1.0. The implications of these results on models for the nucleosynthesis of alpha-capture elements and the chemical evolution of the Galaxy are discussed. | Source: | arXiv, astro-ph/0206075 | Services: | Forum | Review | PDF | Favorites |
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