8 papers
Metal-Poor Globular Clusters of the Milky Way and Environs
James E. Hesser, Jon P. Fulbright
We review properties of the most metal-deficient globular clusters and halo stars in the local universe as of March 2001, with goals of examining present evidence for the duration…
Chemical Abundances in the Carina dSph Galaxy
Tammy A. Smecker-Hane, Georgi I. Mandushev, James E. Hesser +3
We report on the chemical abundances of stars in the Carina dwarf spheroidal galaxy (dSph) derived from low-resolution spectra. We have determined values of [Fe/H] for 52 stars fro…
HST Photometry of the Globular Cluster M4
Rodrigo A. Ibata, Harvey B. Richer, Gregory G. Fahlman +5
This paper presents a detailed description of the acquisition and processing of a large body of imaging data for three fields in the globular cluster M4 taken with the Wide Field a…
The Omega_M-Omega_Lambda Constraint from CNOC Clusters
R. G. Carlberg, H. K. C. Yee, E. Ellingson +14
The CNOC redshift survey of galaxy clusters measures Omega_M from Omega_e(z)= M/L x j/ρ_c which can be applied on a cluster-by-cluster basis. The mass-to-light ratios, M/L, are est…
Omega_M and the CNOC Surveys
R. G. Carlberg, H. K. C. Yee, H. Lin +15
The CNOC1 cluster survey measures Omega_M via Oort's method, Omega_M= M/L x j/rho_c, where M/L is the field mass-to-light ratio, j is the field luminosity density and rho_c is the…
Omega baryon via Oort's Method
R. G. Carlberg, S. L. Morris, H. K. C. Yee +11
The baryon density of the universe is equal to the product of the baryon-to-light ratio, M_b/L, and the luminosity density, j. We estimate M_b/L as the sum of the masses of the X-r…