H_0 and Odds on Cosmology

Details H_0 and Odds on Cosmology H_0 and Odds on Cosmology

1995-01-19

arxiv.org/abs/astro-ph/9501070v1

Astrophys.J. 471 (1996) 24

Astronomy and Astrophysics

Astrophysics

8 Pages, uuencoded postscript. Submitted to ApJLett. Also available at file://ftp.cita.utoronto.ca/cita/andrew/papers/odds.ps

Scientific paper

10.1086/177950

Recent observations by the Hubble Space Telescope of Cepheids in the Virgo cluster imply a Hubble Constant $H_0=80\pm17$\ km/sec/Mpc. We attempt to clarify some issues of interpretation of these results for determining the global cosmological parameters $\Omega$ and $\Lambda$. Using the formalism of Bayesian model comparison, the data suggest a universe with a nonzero cosmological constant $\Lambda>0$, but vanishing curvature: $\Omega+\Lambda=1$.

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