Fig. A.1
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Transit least squares (TLS) periodogram of the K2 (C10) and TESS (S46) photometry of K2-157 detrended with the bi-weight technique considering a window length of 0.5 d. The horizontal dotted lines indicate a conservative threshold for considering a significant transit detection. The vertical dashed lines indicate the first harmonics of the maximum power period (0.365 d).
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