%0 Journal Article
%T The Correlation Between Galaxy HI Linewidths and K' Luminosities
%A B. Rothberg
%A W. Saunders
%A R. B. Tully
%A P. L. Witchalls
%J Physics
%D 1999
%I arXiv
%R 10.1086/308699
%X The relationship between galaxy luminosities and rotation rates is studied with total luminosities in the K' band. Extinction problems are essentially eliminated at this band centered at 2.1 micron. A template luminosity-linewidth relation is derived based on 65 galaxies drawn from two magnitude-limited cluster samples. The zero-point is determined using 4 galaxies with accurately known distances. The calibration is applied to give the distance to the Pisces Cluster (60 Mpc) at a redshift in the CMB frame of 4771 km/s. The resultant value of the Hubble Constant is 81 km/s/Mpc. The largest sources of uncertainty arises from the small number of zero-point calibrators at this time at K' and present application to only one cluster.
%U http://arxiv.org/abs/astro-ph/9911053v1