X iv : a st ro - p h / 99 08 34 3 v 1 3 1 A ug 1 99 9 A robust method for measuring the Hubble parameter
نویسندگان
چکیده
We obtain a robust, non-parametric, estimate of the Hub-ble constant from galaxy linear diameters calibrated using HST Cepheid distances. Our method is independent of the parametric form of the diameter function and the spatial distribution of galaxies and is insensitive to Malmquist bias. We include information on the galaxy rotation velocities ; unlike Tully-Fisher, however, we retain a fully non-parametric treatment. We find H 0 = 66 ± 6 kms −1 Mpc −1 , somewhat larger than previous results using galaxy diameters.
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#NASA Ames Research Center, MS 245-3, Moffett Field, CA 94035-1000 ∗Department of Astronomy, University of California, Berkeley, CA 94720 †Hubble Fellow, California Institute of Technology, MS 105-24, Pasadena, CA 91125 ‡Dominion Astrophysical Observatory, 5071 W. Saanich Rd., Victoria, B.C., Canada V8X 4M6 §Department of Astronomy, P.O. Box 208101, Yale University, New Haven, CT 06520 ‖Observa...
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