The Lomb-Scargle periodogram of the RV measurements for ϵ CrB. The periodogram shows a significant power at a frequency of 0.00239 c d-1 corresponding to a period of 417.9 days (top panel). And after subtracting the main frequency variations (bottom panel), the highest significant power at a frequency is 0.00497 c d-1 (P = 201.2 days). The horizontal dashed line indicates an FAP threshold of 1%.
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