Relation between the central brightness and absolute magnitude distribution for spheroids and stellar disks. The symbols are the same as in Figs. 1 and 2. Local stellar disks and bulges of late-type spirals are located below the Gaia detection limit for a fiducial distance of 10 Mpc and should not be detected. However, the vast majority of normal ellipticals and classical bulges have a sufficiently high central surface brightness to be detected.