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Ba stars and other binaries in first and second generation stars in globular clusters

D'Orazi, Valentina; Gratton, Raffaele G.; Lucatello, Sara; Carretta, Eugenio; Bragaglia, Angela; Marino, Anna


The determination of the Ba abundance in globular cluster (GC) stars is a very powerful test to address several issues in the framework of multiple population scenarios. We measured the Ba content for a sample of more than 1200 stars in 15 Galactic GCs, using high-resolution FLAMES/Giraffe spectra. We found no variation in [Ba/Fe] ratios for different stellar populations within each cluster; this means that low-mass asymptotic giant branch stars do not significantly contribute to the...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Astrophysical Journal Letters
DOI: 10.1088/2041-8205/719/2/L213


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