Fig. 3
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GLS periodograms of the SONG RVs (blue) and the Hα activity indicator (red) of HD 3651: (a) SONG RVs, (b) SONG RVs minus the 62-day model, and (c) Hα. The vertical green line represents the orbital period of the confirmed planet, and the black line the 1-yr window function. Horizontal dashed lines show the theoretical FAP levels of 10%, 1%, and 0.1% for each panel.
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