5 papers
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…
Homogeneous abundance ratios of hydrostatic and explosive alpha-elements in globular clusters from high resolution optical spectroscopy
Eugenio Carretta
Galactic globular clusters (GCs) were born shortly after the Big Bang. For such old stellar systems the initial mass function (IMF) at the high mass regime can never be observed di…
Homogenous abundances of Mg, Si, Ca, and Ti for about 1500 red giants in 16 globular clusters from FLAMES spectra
Eugenio Carretta
The FLAMES survey ``Na-O anti-correlation and HB" uncovered the modern standard for globular clusters (GCs), that is their ubiquitous multiple stellar populations (MPs) distinct by…
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…