AC frequency as a function of the absolute visual magnitude of the host system for a sample of LG galaxies. The S parameter is defined as the number of AC normalised to the visual luminosity of the host galaxy, in units of 10⁵ L_⊙. Purely old galaxies (fast) are shown in red, while dwarfs with extended SFH (slow) are indicated by blue symbols. The location of Leo II is indicated by the green pentagon.