Abundances of selected elements in five oxygen-poor stars in Omega Centauri

Daniel Zucker*, George Wallerstein, Jeffery A. Brown

*Corresponding author for this work

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We have derived abundances or upper limits for Fe, O, Na, Al, Sc, and Eu in five oxygen-poor red giants in Omega Centauri, a globular cluster which displays a metallicity range of some 1.5 dex. All of the stars show large Al excesses and slight Sc excesses, and all but one reveal an excess of Na. We find either solar or slightly deficient Eu abundances in these stars, in agreement with other recent results. We have also used spectral synthesis to derive 12C/13C ratios which are similar to ratios obtained for oxygen-rich stars in Omega Centauri and in other globular clusters.

Original languageEnglish
Pages (from-to)911-916
Number of pages6
JournalPublications of the Astronomical Society of the Pacific
Volume108
Issue number728
DOIs
Publication statusPublished - Oct 1996
Externally publishedYes

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