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Chemistry of Stars in the Sculptor Dwarf Galaxy from VLT-FLAMES

  • Kim A. Venn (a1) (a2) and V. Hill (a3)

Abstract

The chemical composition of 91 stars in the Sculptor dwarf spheroidal galaxy is presented as determined from spectra taken with the FLAMES multiobject spectrograph in the Medusa mode. The analysis methods are outlined. The [α/Fe] ratios are shown for Mg, Ca, and Ti, and compared with those of Galactic stars. Heavy element abundance ratios (Y, Ba, and Eu) are also presented. Since the Sculptor dwarf galaxy has had a significantly different star formation history and chemical evolution than the Galaxy, then comparison of Sculptor's metal-poor (old) stars to similar metallicity stars in the Galaxy can be used to discuss galaxy formation scenarios, as well as test some of our fundamental assumptions in stellar nucleosynthesis.

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Chemistry of Stars in the Sculptor Dwarf Galaxy from VLT-FLAMES

  • Kim A. Venn (a1) (a2) and V. Hill (a3)

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