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The HST Key Project on the Extragalactic Distance Scale. XV. A Cepheid Distance to the Fornax Cluster and Its Implications
Barry F. Madore, Wendy L. Freedman, N. Silbermann +13
Using the Hubble Space Telescope (HST) 37 long-period Cepheid variables have been discovered in the Fornax Cluster spiral galaxy NGC 1365. The resulting V and I period-luminosity r…
A 3D Treatment of Radiative Transfer: Including Multi-wavelength Scattering; Absorption and Far Infrared Emission; and Arbitrary Geometry
Matthew Trewhella, Barry F. Madore, Leslie Kuchinski
We have developed a new model that uses a cellular approach to calculate radiative transfer of starlight through dusty media. The model is designed to be user friendly enough to be…
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…
A Cepheid Distance to the Fornax Cluster
B. F. Madore, W. L. Freedman, N. Silbermann +13
The Hubble Space Telescope is being used to measure accurate Cepheid distances to nearby galaxies with the ultimate aim of determining the Hubble constant, H_0. For the first time,…
Cepheid and Tip of the Red Giant Branch Distances To the Dwarf Irregular Galaxy IC10
Shoko Sakai, Barry F. Madore, Wendy L. Freedman
We present color-magnitude diagrams and luminosity functions of stars in the nearby galaxy IC 10, based on VI CCD photometry acquired with the COSMIC prime-focus camera on the Palo…
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…