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Fig. 2
Lomb-Scargle periodogram of (from top to bottom) the combined HET/HRS and TNG/HARPS-N RV data, the selected photometric data set, the FWHM of the cross-correlation function from TNG, the SHK measured in TNG spectra, and the post Keplerian fit RV residua for HD 4760. A periodic signal is clearly present in the RV data.
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