ar X iv : a st ro - p h / 95 10 09 0 v 2 1 9 O ct 1 99 5 The Canada France Redshift Survey VIII

This paper analyzes the spatial clustering of galaxies in the Canada-France Redshift Survey (CFRS). We have used the projected two-point correlation function, w(rp), to investigate the spatial distribution of the 591 galaxies with secure redshifts between 0 ≤ z ≤ 1.3 in the five CFRS fields. The slope of the two-point correlation function for the sample as a whole is γ = 1.64 ± 0.05, very similar to the local slope, and γ is therefore not strongly evolving with redshift. However, the amplitude of the correlation function decreases strongly with increasing redshift, so that at z ≈ 0.6 it is a factor of 10 lower (for q0 = 0.5) than for a similarly-selected local galaxy population, on scales 0.1 < r < 2h Mpc (q0 = 0.5). As a whole, the CFRS data is adequately represented by r0(z = 0.53) = 1.33±0.09h Mpc for q0 = 0.5, and r0(z = 0.53) = 1.57±0.09h Mpc for q0 = 0. Unless the galaxy population at high redshift is quite different from any population seen locally, an unlikely possibility, then this implies growth of clustering as described by the evolutionary parameter ǫ to be between 0 < ǫ < +2. Visiting Astronomer, Canada-France-Hawaii Telescope, which is operated by the National Research Council of Canada, the Centre de Recherche Scientifique of France and the University of Hawaii