Fig. 10
X-ray to bolometric luminosity ratios of the M 34 sample stars vs. masses compared with an X-ray luminosity model of 220 Myr stars with initial rotation periods on the ZAMS ranging from 0.2 to 5.0 days. Stars represented as blue circles are members of the I-sequence. Stars represented as blue square belong to the C-sequence. Triangles represent gap stars assumed to be evolving from the C-sequence towards the I-sequence.
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