FP relation produced by the merging of dissipationless disk galaxy models appropriate for redshifts ﹩z=0﹩ (black), ﹩z=2﹩ (red), ﹩z=3﹩ (blue), and ﹩z=6﹩ (green) on nearly radial, parabolic orbits. All models include dark matter halos. The dissipationless merging of pure disk models (filled triangles) and disk models with bulges (filled circles) produce similar FP relations nearly parallel to the plane defined by the virial relation. Increasing the angular momentum of the orbit by lengthening the pericentric passage distance of the orbit produces an offset in the FP by increasing the effective radius of the remnants (open circles), but the systems still obtain an FP scaling similar to the virial plane. Select higher resolution runs closely follow the FP delineated by their lower resolution counterparts (open diamonds). For comparison, the best least‐squares fit to the FP of pure disk merger remnants is plotted (dotted line). Also shown is the mean deviation induced by line‐of‐sight variations in projected quantities for a given remnant (detached error bars).