Table 8.
Results on Kuiper tests between the period and eccentricity distributions of the samples.
| Sample 1 | Sample 2 | Kuiper test |
|
|---|---|---|---|
| D | dpp | ||
| Period distributions: | |||
| NGC 6231 (B0-B9) | S12 (O7-O9) | 0.65 | 13.3% |
| NGC 6231 (B0-B9) | A17 (O3-O9.7) | 0.24 | 80.1% |
| NGC 6231 (B0-B9) | K14 (B0-B2) | 0.29 | 78.1% |
| NGC 6231 (B0-B9) | BBC (B0-B5) | 0.28 | 60.3% |
| NGC 6231 (B0-B9) | A90 (B2-B5) | 0.24 | 91.6% |
| Eccentricity distributions: | |||
| NGC 6231 (B0-B9) | S12 (O7-O9) | 0.30 | 99.2% |
| NGC 6231 (B0-B9) | A17 (O3-O9.7) | 0.55 | 0.1% |
| NGC 6231 (B0-B9) | K14 (B0-B2) | 0.28 | 80.1% |
| NGC 6231 (B0-B9) | BBC (B0-B5) | 0.31 | 40.9% |
| NGC 6231 (B0-B9) | A90 (B2-B5) | 0.27 | 79.2% |
Notes. Samples compared are the NGC 6231 B-type stars, NGC 6231 O stars (S12), and results from the TMBM (A17), BBC (Villaseñor et al. 2021), Cygnus OB2 (K14) and field B-type stars (A90). D is the Kuiper D number and dpp is the probability that a value as large as D would occur if data was drawn from the given distribution. The spectral sub-type range is given in the brackets next to the ID of each sample.
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