Measuring the Hubble Constant with the Hubble Space Telescope

Details Measuring the Hubble Constant with the Hubble Space Telescope Measuring the Hubble Constant with the Hubble Space Telescope

2009-10-30

arxiv.org/abs/0910.5775v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Gruber Prize Lecture to be published in Transactions of the IAU

Scientific paper

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.

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