Power at 480 d in the periodogram of the supergranulation + planet RV versus the phase of the planet (black lines). The supergranulation RV is obtained with the 8-day sampling, 30 min over 1 night. The planet has a period of 480 days and a mass of 1 M_Earth. The power is the maximum for periods within 5% of the planet period. The different curves correspond to six different realizations of the time series for this sampling. The red curves correspond to the planet alone (same realizations). The green horizontal line is the average power for supergranulation alone, while the two orange horizontal lines indicate the minimum and maximum values of the power at 480 days for supergranulation alone (over the six realizations).