Generalized Lomb-Scargle (GLS) periodograms of CARMENES (left) and MAROON-X (right) RV measurements and the residual RVs after subtraction of different models. In all panels, the 10%, 1%, and 0.1% FAP levels are indicated by grey dotted, dash-dotted, and dashed lines, respectively. Left panels: a) GLS of RV dataset. b) GLS of the RV residuals after fitting the 13.6 d signal (vertical magenta line). c) GLS of the RV residuals after simultaneously fitting the 6.6 d (vertical green line) and 13.6 d signals. d) GLS of the RV residuals after simultaneously fitting the transitting planet (P = 0.926 d, vertical red line), 6.6 d, and 13.6 d signals. Right panels: a) GLS of RV dataset. b) GLS of the RV residuals after fitting the 6.6 d signal (vertical green line). c) GLS of the RV residuals after simultaneously fitting the transiting planet (P = 0.926 d, vertical red line) and 6.6 d signals. d) GLS of the RV residuals after simultaneously fitting the 6.6 d and 13.6 d (vertical magenta line) signals. e) GLS of the RV residuals after simultaneously fitting the transiting planet, 6.6 d, and 13.6 d signals. f) Window function.