The Las Campanas Redshift Survey Results: The Redshift-Space Autocorrelation Function

. Presented are measurements from the Las Campanas Redshift Survey (LCRS) of the galaxy-galaxy autocorrelation function in redshiftspace, ¸ gg (s). For separations 2:0h \Gamma1 Mpc ! s ! 16:4h \Gamma1 Mpc, ¸ gg (s) can be approximated by a power law with slope fl = \Gamma1:52 \Sigma 0:03 and correlation length s 0 = 6:28 \Sigma 0:27h \Gamma1 Mpc. A zero-crossing occurs on scales of ¸ 30 \Gamma 40h \Gamma1 Mpc. On larger scales, ¸ gg (s) fluctuates closely about zero, indicating a high level of uniformity in the galaxy distribution on these scales. In addition, a selection effect inherent to the LCRS -- the 55 arcsec galaxy pair separation limit -- is tested and found to have little impact on the measurement of ¸ gg (s). 1. Introduction The original goals of the Las Campanas Redshift Survey (LCRS; Shectman et al. 1996) were two-fold: firstly, to attempt to sample a `fair and typical' volume of the nearby Universe in order to constrain the size of the largest structures in the..