Combined look at the offsets ΔM_B from the Tully-Fisher relation and the offsets Δlog r_d from the velocity-size relation. Top left: local sample from Haynes et al. (1999b; no error bars shown for clarity), showing a correlation between the two parameters (the dashed and dotted lines show the fit and 3σ scatter). Top right, bottom left and bottom right: distribution of our data in three redshift bins comprising 41−42 galaxies each, with a fixed-slope fit indicated by a solid line. The local fit and 3σ scatter are displayed for comparison in each panel. These figures show the combined evolution in luminosity and size toward higher redshifts. See text for details.