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Nature and nurture: the dynamical ages of in situ and accreted globular clusters in the Milky Way
Eugenio Carretta
The bifurcated age-metallicity relation of globular clusters (GCs) in the Milky Way (MW) shows that GCs are either originated in situ or accreted into the Galaxy from former satell…
Inconsistent metallicity spreads in first generation stars of globular clusters from high resolution spectroscopy and HST photometry
Eugenio Carretta, Angela Bragaglia
An open issue about multiple stellar populations in globular clusters (GCs) is the possible existence of metallicity spreads in first generation (FG) stars. Recent estimates based…
A comparison of abundance analyses of first generation stars in multiple populations in 47 Tuc and NGC 3201
Eugenio Carretta, Angela Bragaglia
The distinction of the stellar content in globular clusters (GCs) in multiple stellar populations characterized by different amounts of proton-capture elements has been well assess…
Chemistry of multiple stellar populations in the mono-metallic, in situ, bulge globular cluster NGC 6388
Eugenio Carretta, Angela Bragaglia
We present the homogeneous abundance analysis for a combined sample of 185 giants in the bulge globular cluster (GC) NGC 6388. Our results are used to describe the multiple stellar…
Multiple stellar populations in the high-temperature regime: Potassium abundances in the globular cluster M 54 (NGC 6715)
Eugenio Carretta
Among the multiple stellar populations in globular clusters (GCs) the very high-temperature H-burning regime, able to produce elements up to potassium, is still poorly explored. He…
The in situ origin of the globular cluster NGC 6388 from abundances of Sc, V, and Zn of a large sample of stars
Eugenio Carretta, Angela Bragaglia
Chemical tagging of globular clusters (GCs) is often done using abundances of alpha-elements. The iron-peak elements Sc, V, and in particular Zn were proposed as an alternative to…