Photometric variability in the r band (top). The projected equatorial velocity (middle) and the fraction between the Lx and bolometric luminosities (bottom) vs. the rotational period. Only single stars are shown. The lithium-rich stars come from selection A, based on spectral resolution, although the result is practically identical if the stress is put on the S/N. HII 380 and HII 740 do not have a measured value of Lx, and HII 708 does not have a measured value of the photometric amplitude, and therefore they are not represented on some of these diagrams.
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