136 citations · 926 across the 27 of their papers we have counts for
6 papers · 1 filter
Heavy Element Abundances in Giant Stars of 47 Tuc
E. C. Wylie, P. L. Cottrell, C. A. Sneden +1
This research forms part of an investigation into heavy element abundances in Asymptotic Giant Branch (AGB) stars in various stellar environments. Seven giant stars in the southern…
Chemical Homogeneity in the Hyades
G. M. De Silva, C. Sneden, D. B. Paulson +4
We present an abundance analysis of the heavy elements Zr, Ba, La, Ce, and Nd for Hyades cluster F-K dwarfs based on high resolution, high S/N ratio spectra from Keck/HIRES. The de…
The lithium content of the globular cluster NGC 6397
P. Bonifacio, L. Pasquini, F. Spite +16
We make use of high resolution, high signal-to-noise ratio spectra of 12 turn-off stars in the metal-poor globular cluster NGC 6397 to measure its lithium content. We conclude that…
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…
First Dredge-Up and further Mixing Mechanisms along the Red Giant Branch in Field Stars
Eugenio Carretta, Raffaele Gratton, Chris Sneden +1
In this research we use a large sample of field metal-poor stars ([Fe/H]<-1) in different evolutionary phases to prove observationally that (small mass) subgiants (stars brighter t…
The Mildly Metal-Poor Globular Cluster M4: Star-to-Star Abundance Variations in 20 Giants
I. I. Ivans, C. Sneden, R. P. Kraft
We present a chemical composition analysis of a sample of 20 giant branch stars in the "CN-bimodal" globular cluster M4 observed using high resolution echelle spectrographs at Lick…