758 citations · 6k across the 64 of their papers we have counts for
64 papers
The White Dwarfs of the Old, Solar Metallicity Open Star Cluster Messier 67: Properties and Progenitors
Paul A. Canton, Kurtis A. Williams, Mukremin Kilic +1
The old, solar metallicity open cluster Messier 67 has long been considered a lynchpin in the study and understanding of the structure and evolution of solar-type stars. The same i…
The PHLEK Survey: A New Determination of the Primordial Helium Abundance
Tiffany Hsyu, Ryan J. Cooke, J. Xavier Prochaska +1
We present Keck NIRSPEC and Keck NIRES spectroscopy of sixteen metal-poor galaxies that have pre-existing optical observations. The near-infrared (NIR) spectroscopy specifically ta…
Ensemble Properties of the White Dwarf Population of the Old, Solar Metallicity Open Star Cluster Messier 67
Kurtis A. Williams, Paul A. Canton, A. Bellini +4
White dwarfs are excellent forensic tools for studying end-of-life issues surrounding low- and intermediate-mass stars, and the old, solar-metallicity open star cluster Messier 67…
Searching for the Lowest Metallicity Galaxies
Tiffany Hsyu, Ryan J. Cooke, J. Xavier Prochaska +1
We report a method of identifying candidate low-metallicity blue compact dwarf galaxies (BCDs) from the Sloan Digital Sky Survey (SDSS) imaging data and present 3-m Lick Observator…
The Little Cub: Discovery of an Extremely Metal-Poor Star-Forming Galaxy in the Local Universe
Tiffany Hsyu, Ryan J. Cooke, J. Xavier Prochaska +1
We report the discovery of the Little Cub, an extremely metal-poor star-forming galaxy in the local Universe, found in the constellation Ursa Major (a.k.a. the Great Bear). We firs…
Systematic non-LTE study of the [Fe/H] F and G dwarfs in the solar neighbourhood. II. Abundance patterns from Li to Eu
G. Zhao, L. Mashonkina, H. L. Yan +14
For the first time, we present an extensive study of stars with individual non-local thermodynamic equilibrium (NLTE) abundances for 17 chemical elements from Li to Eu in a sample…