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During the epoch of galaxy formation, the formation of the first galaxies inregions of high overdensity may lead to an initial amplitude of the spatialcorrelation function of galaxies, $\xi_0,$ much higher than that expected inlinear perturbation theory. This initially high ``bias'' would consequentlydecrease to the near-unityvalues expected from local observations. Such a``Decreasing Correlation Period'' (DCP), detected in N-body simulations undercertain conditions by several authors, is parametrised in a simple way, endingat a ``transition'' redshift $z_t.$ Consequences on $w_0,$ the amplitude of theangular correlation function of faint galaxies (for a fixed apparent magnituderange), have been estimated. The sensitivity of $w_0$ to $z_t,$ and how this isaffected by the redshift distribution of the galaxies in the sample, by lowredshift spatial correlation function behaviour, by cosmology, and by the rateat which $\xi_0$ decreases during the DCP, are shown and discussed. This simplemodel is intended as a first exploration of the effects of the DCP for a likelyrange of parameter space. Comparison with the Hubble Deep Field (HDF) estimateof $w_0$ (Villumsen et al. 1996) indicates that the DCP is compatible withobservation for values of $z_t$ in the theoretically expected range $z_t\gtapprox 1.$ However, tighter observational constraints on the HDF redshiftdistribution and on low redshift correlation function growth will be neededeither to detect the DCP unambiguously or to constrain $z_t$ to redshiftsgreater than those of galaxies in existing surveys.Comment: 5 pages, LaTeX format, AAS macros, to appear in Astrophysical  Journal, 20 Jul

A Possible Effect of the Period of Galaxy Formation on the Angular Correlation Function