Results of the BGLS periodogram analysis. Top: stacked BGLS periodograms of the complete RV dataset. The colour bar indicates the log-likelihood (log P) level. The black arrows mark the planetary signal at 11.2 days and the stellar rotation period at 103.1 days. Bottom: evolution of the log-likelihood a function of the number of observations for the three most significant signals in the BLS periodogram: 11.2, 88, and 113 days.