Black-hole masses as estimated in Sect. 4.3 as a function of stellar mass of the host galaxy, taken from Seymour et al. (2007). Red dots mark the HzRG in which we detected HαBLRs, not correcting for inclination, and blue empty squares show the same galaxies with black-hole masses estimated assuming the inclination correction of Jarvis & McLure (2002). The empty circle marks TXS1113-178 for which we used the average HzRG mass of Seymour et al. (2007). Arrows mark galaxies for which Seymour et al. only provide upper limits (see text for details). Empty circles show the nearby galaxies of Häring & Rix (2004), and the black dashed line shows the best linear fit to their sample.