DISTANCE TO THE FORNAX CLUSTER USING THE HUBBLE SPACE TELESCOPE: IMPLICATIONS FOR COSMOLOGY (2007)
Wendy L. Freedman, N. Silbermann, Paul Ha Rding, Jeremy R. Mould, ...
ABSTRACT Using the Hubble Space Telescope (HST), we have discovered Cepheid variables in the Fornax cluster spiral galaxy, NGC 1365. V and I period-luminosity relations for 37 Cepheids with periods...