Major- (continuous line and coordinate x) and minor-axis (dashed line and coordinate y) stellar surface density profiles of NGC 1277 (left panel) and NGC 1278 (right panel). The vertical grey lines are as in Fig. 10. The surface density estimates were calculated by deriving pixel-to-pixel mass-to-light ratios from colours following the prescriptions in Roediger & Courteau (2015), and assuming a Salpeter IMF.