Fig. 10
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Study of the HD 93963A rotational period using TESS data. Upper panel: Lomb–Scargle periodogram of HD 93963 A light curves. The red dashed line marks the first harmonic of the rotation frequency of the star. Lower panel: autocorrelation function of the TESS light curve. The red dashed lines mark the rotation period of the star and its first harmonic.
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