164 citations · 1.1k across the 23 of their papers we have counts for
23 papers
The Star Formation History in The Far Outer Disc of M33
M. K. Barker, A. M. N. Ferguson, A. A. Cole +5
The outer regions of disc galaxies are becoming increasingly recognized as key testing sites for models of disc assembly and evolution. Important issues are the epoch at which the…
The Chemical Abundances of the Stellar Populations in the Leo I and Leo II dSph Galaxies
Tammy L. Bosler, Tammy A. Smecker-Hane, Peter B. Stetson
We have obtained spectra of 102 red giant branch (RGB) stars in the Leo I dwarf spheroidal galaxy (dSph) and 74 RGB stars in the Leo II dSph using LRIS on the Keck I 10-meter Teles…
Spectroscopy of Red Giants in the LMC Bar: Abundances, Kinematics, and the Age-Metallicity Relation
Andrew A. Cole, E. Tolstoy, J. S. Gallagher +1
We report metallicities and radial velocities derived from spectra at the near-infrared calcium triplet for 373 red giants in a 200 square arcminute area at the optical center of t…
The Effects of Age on Red Giant Metallicities Derived from the Near-Infrared Ca II Triplet
A. A. Cole, T. A. Smecker-Hane, E. Tolstoy +2
We have obtained spectra with resolution 2.5 Angstroms in the region 7500-9500 Angstroms for 116 red giants in 5 Galactic globular clusters and 6 old open clusters (5 with publishe…
Constraints on the Origin of Manganese from the Composition of the Sagittarius Dwarf Spheroidal Galaxy and the Galactic Bulge
Andrew McWilliam, R. Michael Rich, Tammy A. Smecker-Hane
The trend of [Mn/Fe] in the Galactic bulge follows the solar-neighborhood relation, but most stars in the Sagittarius dwarf spheroidal galaxy show [Mn/Fe] deficient by approximatel…
A Search for Ionized Gas in the Draco and Ursa Minor Dwarf Spheroidal Galaxies
J. S. Gallagher, G. J. Madsen, R. J. Reynolds +2
The Wisconsin H Alpha Mapper has been used to set the first deep upper limits on the intensity of diffuse H alpha emission from warm ionized gas in the Local Group dwarf spheroidal…