HD 1461. GLS periodogram of the RV residuals of the two-Keplerian model (top) and two-Keplerian + linear drift (bottom) for data taken after JD = 2 454 850 (the inactive data set). The two peaks standing out as significant signals in the top panel have periods of 22.9 days and around 650 days. Note that the significance is reduced drastically when the long-term trend caused by the activity cycle is removed, indicating that the observed periodicities are aliases of a long-period signal present in the data.