Sulfur in the Interstellar Medium

Details Sulfur in the Interstellar Medium Sulfur in the Interstellar Medium

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21812923w&link_type=abstract

American Astronomical Society, AAS Meeting #218, #129.23; Bulletin of the American Astronomical Society, Vol. 43, 2011

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Scientific paper

Sulfur is abundant in the interstellar medium and its presence in grains could have important implications for extinction, yet little analysis has been done to measure the abundance of sulfur in grains. Previous abundance studies have suggested that sulfur does not contribute significantly to interstellar dust. However, studies of dust in meteorites indicate that sulfur is present in dust. We analyzed the strong S II 1250, 1253, 1259 Å features in high-resolution STIS data to expand the sample of interstellar sulfur determinations. We present the interstellar abundance measurements of 28 sight lines for singly ionized sulfur atoms, the dominant form of sulfur in the interstellar medium. Our preliminary results indicate that sulfur is depleted into grains but does not follow the pattern of other elements in dust.

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