Bailey diagram, V-band amplitude versus period, for ω Cen RRLs. Blue circles mark RRc variables, while red squares mark RRab variables. The ranges in period for the RRab light-curve templates are indicated by vertical black dashed lines. The blue striped areas show the ranges in amplitude adopted for the light-curve templates by J96. Note that they provided thresholds in the B band, but here they have been rescaled by 1.25, i.e., the typical amplitude ratio (A(B)/A(V)) for RRab variables (Braga et al. 2016).