Fig. B.2.
Example of the lightcurve correction process using EPIC 219722781. Panel a: original K2 lightcurve from simple aperture photometry (SAP). Panel b: EVEREST lightcurve after the pixel level de-correlation (PLD). Panel c: lightcurve after both normalization and principal component analysis (PCA). In all panels, the colored regions mark identified flux variations assigned to two different spots with a phase shift of 0.47 and a period of 21.3 d.
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