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Sulphur abundances in disk stars: A correlation with silicon

Chen, Y.Q; Nissen, P.E; Zhao, G; Asplund, Martin


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....[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
Source: Astronomy and Astrophysics


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