794 citations · 10.8k across the 137 of their papers we have counts for
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Na-O anticorrelation and HB. IX. Kinematics of the program clusters. A link between systemic rotation and HB morphology?
M. Bellazzini, A. Bragaglia, E. Carretta +4
We use accurate radial velocities for 1981 member stars in 20 Galactic globular clusters, collected within our large survey aimed at the analysis of the Na-O anti-correlation, to s…
A Stromgren view of the multiple populations in globular clusters
Eugenio Carretta, Angela Bragaglia, Raffaele Gratton +2
We discuss a variety of photometric indices assembled from the uvby Stromgren system. Our aim is to examine the pros and cons of the various indices to find the most suitable one(s…
Multiple stellar populations in 47 Tucanae
A. P. Milone, G. Piotto, L. R. Bedin +16
We use Hubble Space Telescope (HST) and ground-based imaging to study the multiple populations of 47 Tuc, combining high-precision photometry with calculations of synthetic spectra…
Chemical enrichment mechanisms in Omega Centauri: clues from neutron-capture elements
Valentina D'Orazi, Raffaele Gratton, Elena Pancino +4
In the complex picture of multiple stellar populations in globular clusters (GCs), a special role is played by NGC 5139 Omega Centauri. At variance with the majority of GCs, Omega…
Chemical composition of evolved stars in the open cluster NGC 2506
Šarūnas Mikolaitis, Gražina Tautvaišienė, Raffaele Gratton +2
In this study we present abundances of 12^C, 13^C, N, O and up to 26 other chemical elements in two first ascent giants and two core-helium-burning 'clump' stars of the open cluste…
Chemical composition of evolved stars in the open cluster IC 4651
Šarūnas Mikolaitis, Gražina Tautvaišienė, Raffaele Gratton +2
We present an analysis of high-resolution spectra of three core-helium-burning "clump" stars and two first ascent giants in the open cluster IC 4651. Atmospheric parameters (T_eff,…