Periodogram of the CARMENES VIS data. From top to bottom: signals are subsequently subtracted, with red color denoting potential planetary signals and blue indicating the rotation period. Model names correspond to those in Table 4. The 1 day alias period of the signals is marked with a triangle in lighter color. The dashed horizontal lines are the false alarm probabilities at 10%, 1% and 0.1%. From top to bottom: original data, model A, model D, model E, and model G.