The effective radius of the bulge () plotted against the absolute brightness of the bulge (). Shown separately are S0s (filled symbols), Sa-Sbc spirals (crosses), and Sc and later types (squares). The dashed line shows the location of the elliptical galaxies, taken from Graham and Worley [64]. The continuous lines show the mean values of the data points in one magnitude bins: the thick line is for the S0s and the thin line for the Sab-Sbc spirals. This figure is part of Figure 8(a) in Laurikainen et al. [27].
