Fig. 5
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GLS periodogram of the available stellar activity indices. From top to bottom: PFS S-index, TERRA S-index, TERRA FWHM, TERRA BIS, TERRA2 S-index, TERRA2 FWHM, TERRA2 BIS, Combined Sindex, Combined BIS, Combined FWHM. The green solid vertical lines show the best-fit periods of the three planetary signals. The blue dotted horizontal lines represents the 0.1% false alarm probability (FAP) level estimated from 5000 bootstrap resamplings.
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