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Fig. 2.


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Computed Fourier spectrum (top panel, black), the orbital frequency, and the first 47 orbital harmonics (top panel, dashed red lines) that cover the range of frequencies < 40 days−1, above which no significant peaks are found. The bottom row shows the 3rd, 12th, and 25th orbital harmonics (dashed red lines) and the zoomed-in parts of the spectrum that correspond to these frequencies.

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