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Fig. 5.


Background-corrected XMM-Newton light curves of V767 Cen and HD42054, derived from the same extraction regions as the spectra and corrected for the loss of photons due to vignetting, off-axis angle, or other problems such as bad pixels using epiclccorr. EPIC-MOS1, MOS2, and pn data are shown in black, red, and green, respectively. Bins with effective exposure times shorter than the total bin length (100 s) are not shown.

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