GLS periodograms of α Cen B derived from the original time series (solid black line), (dashed red line), and (dash-dotted blue line). The x-axis uses the base-10 logarithmic transformation of the period in order to improve the readability of the plot. The GLS periodogram obtained from does not show any of the periodical peaks caused by stellar signals, which are instead present in the GLS periodogram obtained from . The cv values for and are displayed as solid red and blue lines, respectively.