GLS periodogram for sine functions with different periods and velocity semi-amplitudes. The fit displayed in Fig. 1 was added to each sine function to account for the inaccurate barycentric correction by the FEROS-DRS. The period and velocity semi-amplitude used to compute the sine function are displayed in the legend of the individual plots. The red dashed line represents the position of the period applied to compute the sine function. The blue dashed line marks a one-year period.
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© ESO, 2013