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Fluorine and Sodium in C-rich low-metallicity stars
Sara Lucatello, Thomas Masseron, Jennifer A. Johnson +2
We present the N, O, F and Na abundance and 12C/13C isotopic ratio measurements or upper limits for a sample of 10 C-rich, metal-poor giant stars, eight enhanced in s-process (CEMP…
X-shooter observations of main sequence stars in the globular cluster NGC 2808: first chemical tagging of a He-normal and a He-rich dwarf
A. Bragaglia, E. Carretta, R. G. Gratton +7
We present the first chemical composition study of two unevolved stars in the globular cluster NGC 2808, obtained with the spectrograph X-shooter@VLT. NGC 2808 shows three discrete…
Ba stars and other binaries in first and second generation stars in globular clusters
Valentina D'Orazi, Raffaele Gratton, Sara Lucatello +3
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 measure…
Fast rotating Blue Stragglers in the globular cluster M4
L. Lovisi, A. Mucciarelli, F. R. Ferraro +9
We have used high resolution spectra obtained with the spectrograph FLAMES at the ESO Very Large Telescope to determine the kinematical properties and the abundance patterns of 20…
On the radial distribution of stars of different stellar generations in the globular cluster NGC 3201
Eugenio Carretta, Angela Bragaglia, Valentina D'Orazi +2
We study the radial distribution of stars of different stellar generations in the globular cluster NGC 3201. From recently published multicolour photometry, a radial dependence of…
Detailed abundances of a large sample of giant stars in M 54 and in the Sagittarius nucleus
E. Carretta, A. Bragaglia, R. G. Gratton +7
Homogeneous abundances of light elements, alpha and Fe-group elements from high-resolution FLAMES spectra are presented for 76 red giant stars in M54, a massive globular cluster (G…