Fig. 4
Goodness-of-fit statistics of the sine-model. Both the BIC (black) and χ2 (grey) show a general decreasing trend (top panel), suggesting that sines are a good way of modelling the light curve. Despite the general decrease, however, not all frequencies are adequately modelled by sines: some frequencies in particular induce a worse BIC (ΔBIC > 0) (lower panel).
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