Abundances of Selected Elements in Five Oxygen-Poor Stars in Omega Centauri

Details Abundances of Selected Elements in Five Oxygen-Poor Stars in Omega Centauri Abundances of Selected Elements in Five Oxygen-Poor Stars in Omega Centauri

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996pasp..108..911z&link_type=abstract

Publications of the Astronomical Society of the Pacific, v.108, p.911

Astronomy and Astrophysics

Astronomy

15

Stars: Abundances, Globular Clusters: Individual: Omega Centauri, Stars: Giant

Scientific paper

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 obtianed for oxygen-rich stars in Omega Centauri and in other globular clusters. (SECTION: Stellar Clusters and Associations)

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