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astro-ph1998
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…
astro-ph1998
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…