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Fig. 1

image

Periodogram analysis of the RV (top panel) and the ASAS photometry and FWHMCCF (bottom panel). Dashed lines highlight the strongest peaks, dotted lines represent the 1% FAP threshold. Three RV signals have an FAP lower than 1%, while a fourth is just above this level of confidence. The final RV residual (omc k4) does not show any significant periodicity. The photometry and FWHMCCF show a ~83 day periodicity linked to the stellar rotation. Pre- (red) and post- (blue) fiber upgrade data are analyzed separately.

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