209 citations · 566 across the 7 of their papers we have counts for
18 papers
A Search for Binary Stars at Low Metallicity
David K. Lai, Sara Lucatello, Michael Bolte +2
We present initial results measuring the companion fraction of metal-poor stars ([Fe/H]2.0). We are employing the Lick Observatory planet-finding system to make high-precision…
Carbon and Strontium Abundances of Metal-Poor Stars
David K. Lai, Jennifer A. Johnson, Michael Bolte +1
We present carbon and strontium abundances for 100 metal-poor stars measured from R7000 spectra obtained with the Echellette Spectrograph and Imager at the Keck Observatory.…
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…
Na-O Anticorrelation and HB. VI. The chemical composition of the peculiar bulge globular cluster NGC 6388
E. Carretta, A. Bragaglia, R. G. Gratton +7
We present the LTE abundance analysis of high resolution spectra for red giant stars in the peculiar bulge globular cluster NGC 6388. Spectra of seven members were taken using the…
Discovery of Carbon/Oxygen depleted Blue Straggler Stars in 47 Tucanae: the chemical signature of a mass-transfer formation process
F. R. Ferraro, E. Sabbi, R. Gratton +10
We use high-resolution spectra obtained with the ESO Very Large Telescope to measure surface abundance patterns of 43 Blue Stragglers stars (BSS) in 47 Tuc. We discovered that a su…
The Frequency of Carbon-Enhanced Metal-Poor Stars in the Galaxy from the HERES sample
Sara Lucatello, Timothy Beers, Norbert Christlieb +5
We estimate the frequency of Carbon-Enhanced Metal-Poor (CEMP) stars among very metal-poor stars, based on an analysis of 349 stars with available high-resolution spectra observed…