The HST Key Project on the Extragalactic Distance Scale XVII. The Cepheid Distance to NGC 4725

@article{Gibson1998TheHK,
  title={The HST Key Project on the Extragalactic Distance Scale XVII. The Cepheid Distance to NGC 4725},
  author={Brad K. Gibson and Shaun M. G. Hughes and Peter B. Stetson and Wendy L. Freedman and Robert Charles Kennicutt and Jr. and Jeremy Mould and Fabio Bresolin and Laura Ferrarese and Holland Cole Ford and John A. Graham and Mingsheng Han and Paul Harding and John G. Hoessel and John Peter Huchra and Garth D. Illingworth and Daniel D Kelson and Lucas M. Macri and Barry F. Madore and Randy L. Phelps and Charles F. Prosser and Abhijit Kumar Saha and Shoko Sakai and Kim M. Sebo and Nancy Ann Silbermann and Anne Marie Turner},
  journal={arXiv: Astrophysics},
  year={1998}
}
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 F814W (I) epochs of cosmic-ray-split Wide Field and Planetary Camera 2 observations were obtained. Twenty Cepheids were discovered, with periods ranging from 12 to 49 days. Adopting a Large Magellanic Cloud distance modulus and extinction of 18.50+/-0.10 mag and E(V-I)=0.13 mag, respectively, a true reddening… 

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