478 citations · 3k across the 28 of their papers we have counts for
4 papers · 1 filter
The C+N+O abundance of Omega Centauri giant stars: implications on the chemical enrichment scenario and the relative ages of different stellar populations
A. F. Marino, A. P. Milone, G. Piotto +7
We present a chemical-composition analysis of 77 red-giant stars in Omega Centauri. We have measured abundances for carbon and nitrogen, and combined our results with abundances of…
A Double Main Sequence in the Globular Cluster NGC 6397
A. P. Milone, A. F. Marino, G. Piotto +5
High-precision multi-band HST photometry reveals that the main sequence (MS) of the globular cluster NGC 6397 splits into two components, containing ~30% and ~70% of the stars. Thi…
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…
Luminosity and mass functions of the three main sequences of the globular cluster NGC 2808
A. P. Milone, G. Piotto, L. R. Bedin +5
High-precision HST photometry has recently revealed that the globular cluster (GC) NGC 2808 hosts a triple main sequence (MS) corresponding to three stellar populations with differ…