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Fig. 20

image

Time variability of the optical flux and X-ray properties of stars with disks with periodic variability as shown in Fig. 6, with the difference that the X-ray quantities shown in the left panels are: NH (in units of 1022cm-2), kT (in keV), FX (in erg cm-2s-1), and E50% in keV.

This figure is made of several images, please see below:

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