63 citations · 108 across the 2 of their papers we have counts for
4 papers
Line bisectors and radial velocity jitter from SARG spectra
A. F. Martinez Fiorenzano, R. G. Gratton, S. Desidera +2
We present an analysis of spectral line bisector variations for a few stars observed in the SARG high precision radial velocity planet survey, and discuss their relationship with d…
Heavy elements and chemical enrichment in globular clusters
G. James, P. Francois, P. Bonifacio +3
High resolution (R > 40 000) and high S/N spectra have been acquired with UVES on the VLT-Kueyen (Paranal Observatory, ESO Chile) for several main sequence turnoff stars (V ~ 17 ma…
Biases in the Main Sequence Fitting Distances to Globular Clusters based on the Hipparcos Catalogue
Eugenio Carretta, Raffaele G. Gratton, Gisella Clementini +1
We discuss the different biases affecting the sample of field subdwarfs selected from the Hipparcos Catalogue, and used in the Main Sequence Fitting technique to derive distances t…
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…