First column: RV versus time (JD–2 452 000 days) for each star of the sample. Second column: corresponding periodogram over the range 0.01−1000 days. Third column: same for the 2–1000 day range. Fourth column: periodogram of the temporal sampling. Fifth column: corresponding detection limit versus the period, for the correlation-based method (stars, orange), for the peak method (diamonds, red), for the rms method (solid line, black), for the LPA method (triangle, green), and for the bootstrap method (squares, blue).