Measured color-period diagram (CPD) for M 48, showing the 62 periodic stars believed to be cluster rotators, and whose positions in the CMD are displayed in Fig. 5. We observe a relatively distinct sequence of stars, reminiscent of the Hyades sequence, blueward of B − V = 1, and a more scattered distribution of stars redward of this color. The solar-mass stars show no evidence of the C/fast sequence that characterizes ZAMS clusters.