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Table 2

Suitability of the single Keplerian model alone, i.e. assuming that no other sources of variability exist.

< 0.05 < 0.01 < 0.005 < 0.001

No. of stars 101 83 79 72
Fraction 54% 44% 42% 39%
Confidence C > 95% > 99% > 99.5% > 99.9%

Notes. Second row: number of stars for which the chi-square probability of the single Keplerian model is less than the values given in the first row. Third row: fraction of the 187 stars in our version 2 sample. Last row: confidence with which the single Keplerian model can be rejected.

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