147 citations · 794 across the 13 of their papers we have counts for
5 papers · 1 filter
The link between chemical anomalies along the red giant branch and the horizontal branch extension in globular clusters
Eugenio Carretta, Alejandra Recio-Blanco, Raffaele G. Gratton +2
We find a strong correlation between the extension of the Na-O anticorrelation observed in red giant branch (RGB) stars and the high temperature extension of the horizontal branch…
The chemical abundance of the very metal rich old Open Clusters NGC 6253 and NGC 6791
Eugenio Carretta, Angela Bragaglia, Raffaele Gratton
In the framework of a project aiming at deriving in a homogeneous way the properties (age, distance, reddening and detailed chemical abundances) of a large sample of old open clust…
Variations in the lithium abundances of turn off stars in the globular cluster 47 Tuc
Piercarlo Bonifacio, Luca Pasquini, Paolo Molaro +7
aims: Our aim is to determine Li abundances in TO stars of the Globular Cluster 47 Tuc and test theories about Li variations among TO stars. method: We make use of high resolution…
Na-O Anticorrelation and HB. VI. The chemical composition of the peculiar bulge globular cluster NGC 6388
E. Carretta, A. Bragaglia, R. G. Gratton +7
We present the LTE abundance analysis of high resolution spectra for red giant stars in the peculiar bulge globular cluster NGC 6388. Spectra of seven members were taken using the…
Na-O Anticorrelation and HB. IV. Detection of He-rich and He-poor stellar populations in the globular cluster NGC 6218
E. Carretta, A. Bragaglia, R. G. Gratton +9
We used the multifiber spectrograph FLAMES on the ESO Very Large Telescope UT2 to derive atmospheric parameters, metallicities and abundances of O and Na for 79 red giant stars in…