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A REDETERMINATION OF THE HUBBLE CONSTANT WITH THE<i>HUBBLE SPACE TELESCOPE</i>FROM A DIFFERENTIAL DISTANCE LADDER
We report observations of 240 Cepheid variables obtained with the Near Infrared Camera (NICMOS) through the F160W filter on the Hubble Space Telescope (HST). The Cepheids are distributed across six recent hosts of Type Ia supernovae (SNe Ia) and the "maser galaxy" NGC 4258, allowing us to directly calibrate the …