FP relation produced by the merging of gas‐rich disk galaxies with dark matter halos, star formation and supernova feedback. Shown are remnants produced by mergers appropriate for redshifts ﹩z=0﹩ (black circles), ﹩z=2﹩ (red diamonds), ﹩z=3﹩ (blue triangles), and ﹩z=6﹩ (green squares) with nearly radial, parabolic orbits. The dissipational merging of pure disk models produces an FP nearly parallel to the observed infrared FP (Pahre et al. 1998b) and is almost independent of the redshift scalings of the progenitor systems. For comparison, the best least‐squares fit to the FP delineated by the remnants is plotted (solid line). Also shown is the mean deviation induced by line‐of‐sight variations in projected quantities for a given remnant (detached error bars).