Partial periodogram results for β Doradus. Upper panel: shape periodogram (partial USuRPER) result, presenting a clear peak at the 9.84318 days signal due to pulsation. Middle panel: shift periodogram (partial PDC) results eliminating the peak, as it is designed to be sensitive only to positional modulations, such as pure Doppler shifts due to orbital motion. Lower panel: RVs extracted for the observations, folded according to the 9.84318 days pulsation period. The dotted horizontal line in both panels corresponds to a FAP level of 10⁻⁴, obtained by the permutation test procedure.