Fig. 4
A portion of the power spectrum of our radial velocities data base;top panel: the power spectrum of the original data shows a forest of aliases produced by the sampling, the highest of which corresponds to period P1 = 0.06126454 d;middle panel: the power spectrum of the residuals after subtraction of P1 still suggests a significant modulation with period P2 = 0.0615558 d (see text);bottom panel: when both periods are subtracted the residuals basically show a flat pattern.
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