W. Freedman, R. Kennicutt, J. Mould
Published 2009-10-30Version 1
Ten years ago our team completed the Hubble Space Telescope Key Project on the extragalactic distance scale. Cepheids were detected in some 25 galaxies and used to calibrate four secondary distance indicators that reach out into the expansion field beyond the noise of galaxy peculiar velocities. The result was H_0 = 72 +/- 8 km/sec/Mpc and put an end to galaxy distances uncertain by a factor of two. This work has been awarded the Gruber Prize in Cosmology for 2009.
Comments: Gruber Prize Lecture to be published in Transactions of the IAU
A Redetermination of the Hubble Constant with the Hubble Space Telescope from a Differential Distance Ladder
Progress in Direct Measurements of the Hubble Constant
The iron and oxygen content of LMC Classical Cepheids and its implications for the Extragalactic Distance Scale and Hubble constant
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