Showing papers on "Deceleration parameter published in 1974"
55 citations
01 Jan 1974
TL;DR: In this article, a chain of distance indicators in Sc and Ir galaxies (cepheids, brightest stars, II regions, and luminosity classes) were used to carry out a measurement of the distance scale beyond any possible local anisotropic of the velocity field.
Abstract: A preliminary report is given of recent work with A. Sandage on the Hubble constant. Through a chain of distance indicators in Sc and Ir galaxies (cepheids, brightest stars, II regions, and luminosity classes) the distance scale is carried beyond any possible local anisotropy of the velocity field. Special care is taken to allow for the dependence of the intrinsic properties of the distance indicators on the size of the parent galaxy, and for the effect of the Malmquist correction. H 0 is found to be 55 ± 7 km s−1 Mpc−1; within the errors no systematic changes with distance were found.
8 citations