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The HST Key Project on the Extragalactic Distance Scale XVII. The Cepheid Distance to NGC 4725
Brad K. Gibson, Shaun M. G. Hughes, Peter B. Stetson +22
The distance to NGC 4725 has been derived from Cepheid variables, as part of the Hubble Space Telescope Key Project on the Extragalactic Distance Scale. Thirteen F555W (V) and four…
Luminosity Evolution of Early-type Galaxies to z=0.83: Constraints on Formation Epoch and Omega
Pieter G. van Dokkum, Marijn Franx, Daniel D. Kelson +1
We present deep spectroscopy with the Keck telescope of eight galaxies in the luminous X-ray cluster MS1054-03 at z=0.83. The data are combined with imaging observations from the H…
The HST Key Project on the Extragalactic Distance Scale XIV. The Cepheids in NGC 1365
N. A. Silbermann, P. Harding, L. Ferrarese +21
We report the detection of Cepheid variable stars in the barred spiral galaxy NGC 1365, located in the Fornax cluster, using the Hubble Space Telescope Wide Field and Planetary Cam…
The Color-Magnitude Relation in CL 1358+62 at z=0.33: Evidence for Significant Evolution in the S0 Population
Pieter G. van Dokkum, Marijn Franx, Daniel D. Kelson +3
We use a large mosaic of HST WFPC2 images to measure the colors and morphologies of 194 spectroscopically confirmed members of the rich galaxy cluster CL1358+62 at z=0.33. We study…
The Hubble Space Telescope Key Project to Measure the Hubble Constant
Wendy L. Freedman, Jeremy R. Mould, Robert C. Kennicutt +1
A review of the Hubble Space Telescope H0 Key Project is given, as presented at the IAU Symposium 183 on "Cosmological Parameters" held in Kyoto, Japan in August, 1997. An outline…