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Table 1.
Overview of the inspected samples.
| Sample | Nstars | Source |
|---|---|---|
| Be stars | 234 | BSC/SIMBAD (Zorec & Briot 1997) |
| BeXRBs | 72 | Raguzova & Popov (2005) |
| Be+sdOs | 5 (12) | Wang et al. (2018) |
| OBA stars | 3768 | BSC (Hoffleit & Jaschek 1991) |
Notes. Nstars indicates the total number of stars in the sample (candidates are given in brackets). Fourteen of the Be+sdOs and four of the BeXRBs are also contained in the BSC sample, and all Be stars are part of it by definition.
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