347 citations · 2.5k across the 55 of their papers we have counts for
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Accretion of chemically fractionated material on a wide binary with a blue straggler
S. Desidera, R. Gratton, S. Lucatello +2
The components of the wide binary HIP64030=HD 113984 show a large (about 0.25 dex) iron content difference (Desidera et al.~2006 A&A 454, 581). The positions of the components on t…
Abundances for metal-poor stars with accurate parallaxes II. alpha-elements in the halo
Raffaele Gratton, Eugenio Carretta, Silvano Desidera +3
Abundances for alpha-elements and Fe in about 150 field subdwarfs and early subgiants with accurate parallaxes and kinematic data are used to discuss the run of abundance ratios in…
Abundances for metal-poor stars with accurate parallaxes I. Basic data
Raffaele Gratton, Eugenio Carretta, Riccardo Claudi +2
We present element-to-element abundance ratios measured from high dispersion spectra for 150 field subdwarfs and early subgiants with accurate Hipparcos parallaxes (errors <20%). F…
Stellar Archaeology: a Keck Pilot Program on Extremely Metal- Poor Stars From the Hamburg/ESO Survey. III. The Lead (Pb) Star HE 0024-2523
Sara Lucatello, Raffaele Gratton, Judith G. Cohen +4
We present a detailed abundance analysis, including spectral syntheses, of a very metal-poor ([Fe/H]= -2.7), peculiar main sequence star, HE0024-2523 detected during the course of…
Stellar Archaeology: a Keck Pilot Program on Extremely Metal-Poor Stars from the Hamburg/ESO Survey. II. Abundance Analysis
Eugenio Carretta, Raffaele Gratton, Judith G. Cohen +2
We present a detailed abundance analysis of 8 stars selected as extremely metal poor candidates from the Hamburg/ESO Survey (HES). For comparison, we have also analysed 3 extremely…
Stellar Archaeology: a Keck Pilot Program on Extremely Metal-Poor Stars From the Hamburg/ESO Survey. I Stellar Parameters
Judith G. Cohen, Norbert Christlieb, Timothy C. Beers +2
In this series of two papers we present a high dispersion spectroscopic analysis of 8 candidate extremely metal poor stars selected from the Hamburg/ESO Survey and of 6 additional…
Abundances of light elements in metal-poor stars. IV. [Fe/O] and [Fe/Mg] and the history of star formation in the solar neighborhood
Raffaele Gratton, Eugenio Carretta, Francesca Matteucci +1
The accurate O, Mg and Fe abundances derived in previous papers of this series from a homogenous reanalysis of high quality data for a large sample of stars are combined with stell…
Abundances of light elements in metal-poor stars. III. Data analysis and results
Eugenio Carretta, Raffaele Gratton, Chris Sneden
We present the analysis of an extensive set of new and literature high quality data concerning Fe, C, N, O, Na, and Mg, exploiting the Teff scale determined in Gratton et al. (1996…