Maximum likelihood periodogram of the HIRES, HARPS, and CARMENES RV residuals after removing only the best-fit signal of the candidate planet with an orbital period of ∼140 days from the original data (second column of Table 5). The best-fit sinusoid with period P = 357.76 days has been subtracted from the CARMENES-VIS data. Stellar activity has not been filtered out, because the best-fit model for the activity signal is linked only on RVs measured with HARPS and CARMENES.