Fig. 1.

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TESS light curve, indicated with a black curve. The flare-like events are colored in blue. The ground-based IJHK-band measurements are shown with colored dots and were shifted along the y-axis by the values indicated in the corresponding labels in the figure. The nightly averaged ASAS-SN g-band observations obtained during the TESS observing period are plotted with blue points. The vertical dashed orange and purple lines show the epochs when the ESPRESSO (E) and FEROS (F) spectra were taken, respectively. The long tickmarks at the top of the figure indicate the beginning of each month. Bottom panel: Lomb-Scargle periodogram obtained using the TESS data.
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