The Hubble Constant from the HST Key Project on the Extragalactic Distance Scale
/ Authors
L. Ferrarese, B. Gibson, D. Kelson, S. Sakai, J. Mould, W. Freedman, R. Kennicutt, H. Ford, J. Graham, J. Huchra
and 7 more authors
S. Hughes, G. Illingworth, L. Macri, B. Madore, K. Sebo, N. Silbermann, P. Stetson
/ Abstract
The final efforts of the HST Key Project on the Extragalactic Distance Scale are presented. Four distance indicators, the Surface Brightness Fluctuation method, the Fundamental Plane for early-type galaxies, the Tully-Fisher relation and the Type Ia Supernovae, are calibrated using Cepheid distances to galaxies within 25 Mpc. The calibration is then applied to distant samples reaching cz~10000 km/s and (in the case of SNIa) beyond. By combining the constraints imposed on the Hubble constant by the four distance indicators, we obtain H0 = 71+/-6 km/s/Mpc.
Journal: arXiv: Astrophysics