Ba stars and other binaries in first and second generation stars in globular clusters
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]
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|Source:||Astrophysical Journal Letters|
|01_D'Orazi_Ba_stars_and_other_binaries_in_2010.pdf||233.77 kB||Adobe PDF||Request a copy|
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