565 citations · 2.2k across the 44 of their papers we have counts for
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M67 Blue Stragglers with High-resolution Infrared Spectroscopy
K. E. Brady, C. Sneden, C. A. Pilachowski +5
We report on the first detailed infrared chemical analysis of five binary members (S277, S997, S975, S1031, and S1195) in the open cluster M67 (NGC 2682). These stars are located o…
Chemical Compositions of Red Giant Stars in the Old Open Cluster NGC 7789
Neel Nagarajan, Christopher Sneden, Melike Afsar +1
We have gathered optical-region spectra, derived model atmosphere parameters, and computed elemental abundances for 15 red giant stars in the open cluster NGC 7789. We focus on the…
Evolved Eclipsing Binaries and the Age of the Open Cluster NGC 752
Eric L. Sandquist, Andrew J. Buckner, Matthew D. Shetrone +8
We present analyses of improved photometric and spectroscopic observations for two detached eclipsing binaries at the turnoff of the open cluster NGC 752: the 1.01 day binary DS An…
The Galactic Chemical Evolution of Chlorine
Z. G. Maas, C. A. Pilachowski
We measured Cl abundances in 52 M giants with metallicities between -0.5 [Fe/H] 0.12. Abundances and atmospheric parameters were derived using infrared spectra from…
Carbon and Oxygen Isotopic Ratios. II. Semiregular Variable M Giants
Thomas Lebzelter, Kenneth H. Hinkle, Oscar Straniero +3
Carbon and oxygen isotopic ratios are reported for a sample of 51 SRb- and Lb-type variable asymptotic giant branch stars. Vibration-rotation first- and second-overtone CO lines in…
Chemical Abundances Of Open Clusters From High-Resolution Infrared Spectra. II. NGC 752
G. Böcek Topcu, M. Afsar, C. Sneden +9
We present a detailed near-infrared chemical abundance analysis of 10 red giant members of the Galactic open cluster NGC 752. High-resolution (R45000) near-infrared spectra…