ω_cyc∕Ω vs. Ro⁻¹ for the group of stars in Table A.2, shown in log scale. The red symbols are activity cycles classified asCA, green symbols are activity cycles classified as CB, and black symbols are activity cycles classified as CC. The circles denote Mount Wilson stars, and triangles represent HARPS stars. For multiple cycles, the second cycle periods (Pcyc2) are connected to the filled symbols by a horizontal line. The Sun is shown as ⊙. The active and inactive branches from Saar & Brandenburg (1999) are shown as black dotted lines (see Sect. 4 for details on the selection criteria).