VLT-UVES abundance analysis of four giants in NGC 6553
Context. Metal-rich globular clusters trace the formation of bulges. Abundance ratios in the metal-rich globular clusters such as NGC 6553 can constrain the formation timescale of the Galactic bulge. Aims. The purpose of this study is to determine the metallicity and elemental ratios in individual stars of the metal-rich bulge globular cluster NGC 6553. Methods. A detailed abundance analysis of four giants in NGC 6553 is carried out, based on optical high-resolution échelle spectra obtained...[Show more]
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|Source:||Astronomy and Astrophysics|
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