Radial velocity analysis of CARMENES, HIRES, and MAROON-X data. Left: generalized Lomb-Scargle (GLS) periodograms of the HIRES (top), CARMENES (middle), and the two MAROON-X channels (bottom) radial velocity time series. The vertical dotted lines indicate the highest peaks at 13.6 d (magenta), 6.6 d (green), and 0.92 d (orange). The 10%, 1%, and 0.1% FAP levels are indicated by grey dotted, dash-dotted, and dashed lines, respectively. Right: window functions of the HIRES, CARMENES, and MAROON-X channels time series. The vertical dotted lines indicate the 13.6 d (magenta), 6.6 d (green), and 0.92d (orange) periods.