Table 3
Significance of the K-S test of the BD sample.
| BD* | SP | GP | NP |
|
|
|||
| α-element abundances | |||
|
|
|||
| Discarded | 0.33 | 0.42 | 0.31 |
| Confirmed | 0.87 | 0.08 | 0.83 |
|
|
|||
| Fe-peak element abundances | |||
|
|
|||
| Discarded | 0.15 | 0.53 | 0.19 |
| Confirmed | 0.72 | 0.13 | 0.77 |
Notes.
K-S test to evaluate the significance of the behaviour of the abundances [Xα/H] and [XFe/H] of BD hosts and stars with discarded BDs (see Sect. 6), in comparison with stars with small planets (SP), stars with giant planets (GP), and stars without detected planets (NP). The K-S statistics, with values between 0 and 1, give small values to the significance if the cumulative distribution of the BD sample is significantly different from the SP, GP, or NP samples.
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