Galaxy clustering in the CNOC2 redshift survey

The correlation evolution of a high luminosity subsample of the CNOC2 redshift survey is examined. The sample is restricted to galaxies for which the Ir corrected and evolution corrected R luminosity is M-R less than or equal to -20 mag, where M* similar or equal to -20.3 mag. This subsample contains about 2300 galaxies. In consort with 13000 galaxies in a similarly defined low redshift sample from the Las Campanas Redshift survey we find that the comoving correlation can be described as xi(r/z) = (r(00)/r)(gamma)(1 + z)(-(3+epsilon)) with r(00) = 5.08 +/- 0.08h(-1) Mpc, epsilon = 0.02 +/- 0.23 and gamma = 1.81 +/- 0.03 over the z = 0.03 to 0.65 redshift range in a cosmology with Omega(M) = 0.2, Lambda = 0. The measured clustering amplitude, and its evolution, are dependent on the adopted cosmology. The evolution rates for Omega(M) = 1 and flat low density models are epsilon = 0.9 +/- 0.3 and epsilon = -0.5 +/- 0.2, respectively, with r(00) similar or equal to 5h(-1) Mpc in all cases.