278 citations · 568 across the 5 of their papers we have counts for
5 papers
The double sub-giant branch of NGC 6656 (M22): a chemical characterization
A. F. Marino, A. P. Milone, C. Sneden +14
We present an abundance analysis of 101 subgiant branch (SGB) stars in the globular cluster M22. Using low resolution FLAMES/GIRAFFE spectra we have determined abundances of the ne…
The two metallicity groups of the globular cluster M22: a chemical perspective
A. F. Marino, C. Sneden, R. P. Kraft +11
We present a detailed chemical composition analysis of 35 red giant stars in the globular cluster M22. High resolution spectra for this study were obtained at five observatories, a…
Getting the Red Out: A Stellar Approach to Determining Spatial Variations of Interstellar Dust
I. I. Ivans, C. Sneden, R. P. Kraft +4
By employing two different spectroscopic techniques we have mapped out the variable ISM dust extinction endemic to globular cluster M4. We derive an average E(B-V) reddening of 0.3…
Star-to-Star Abundance Variations among Bright Giants in the Mildly Metal-Poor Globular Cluster M4
Inese I. Ivans, Christopher Sneden, Robert P. Kraft +5
We present a chemical composition analysis of 36 giants in the nearby mildy metal-poor (<[Fe/H]> = -1.18) "CN-bimodal" globular cluster M4. Confronted with a cluster that has large…
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…