Fig. 3.
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Phased light curve of the ExtEEV obtained by means of pyDIA. The consecutive orbital cycles are vertically shifted by 150 ppt in order to present a non-repetitive character of the heartbeat and the other variability. Here and throughout our paper, BTJD ≡ BJD−2457000. The zero phase corresponds to the time of minimum brightness of the heartbeat, BJD 2458373.61518. The light curve was phase-folded with the orbital period of 32.83016 d.
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