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Fig. 9

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To compute the contrast curves shown in Fig. 8, we linearly interpolate, for each separation, the negative logarithm of the false positive fraction (which we compute as the average across 6 azimuthal positions). Then, we determine the contrast value at which the −log10(FPF) score crosses the 5σ threshold and mark these points by a vertical line. This is the contrast curve. We note that there is no simple linear relationship between the maximum −log10(FPF) score and the point at which the −log10(FPF) values cross the threshold, demonstrating clearly why the FPF (or S/N) of a single, given planet generally does not allow statements about the achievable detection limits on that data set.

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