63 citations · 64 across the 3 of their papers we have counts for
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On the calibration of Red Giant Branch metallicity indicators in Globular Clusters: new relations based on an improved abundance scale
Eugenio Carretta, Angela Bragaglia
We present an improved calibration of photometric metallicity indicators, derived from the new metallicity scale for Globular Clusters presented by Carretta & Gratton (1997) and ba…
Binary stars in globular clusters: detection of a binary sequence in NGC 2808?
F. R. Ferraro, E. Carretta, F. Fusi Pecci +1
A CCD V,V-I colour-magnitude diagram (CMD) of the Galactic globular cluster NGC 2808 has been obtained with the ESO-NTT, reaching down to V ~ 24. The highly populated Main Sequence…
Distances and Absolute Ages of Galactic Globular Clusters from Hipparcos Parallaxes of Local Subdwarfs
R. G. Gratton, F. Fusi Pecci, E. Carretta +3
High precision trigonometric parallaxes from the HIPPARCOS satellite and accurate metal abundances ([Fe/H], [O/Fe], and [alpha/Fe]) from high resolution spectroscopy for about 30 l…
Metal Abundances of one Hundred Hipparcos Dwarfs
R. G. Gratton, E. Carretta, G. Clementini +1
Abundances for Fe, O, and the alpha-elements (Mg, Si, Ca, and Ti) have been derived from high resolution spectra of a sample of about one hundred dwarfs with high precision paralla…