Table 2.
Basic physical and orbital parameters for systems with a known fast-rotating OB star, extreme mass ratio, and short periods.
| Target | SpC | vsin i | P | q | e | Companion | Reference |
|---|---|---|---|---|---|---|---|
| [km s−1] | [d] | ||||||
| HD 163892 | O9.5 IV(n) | 201 | 7.8 | 0.17 | 0.04 | B5-7 star | Mahy et al. (2022) |
| HD 165246 | O8 V(n) | 254 | 4.6 | 0.16 | 0.03 | Pre-MS star | Johnston et al. (2021) |
| HD 152200 | O9.7 II–IIIn | 205 | 4.5 | 0.12 | 0.17 | Unknown ( * ) | Britavskiy et al. (2023) |
| HD 46485 | O7 V ((f))nvar? | 334 | 6.9 | 0.035–0.045 | 0 | Pre-MS star | Nazé et al. (2023) |
| HD 138690 (γ Lup A) | B2Vn | 236 | 2.8 | 0.1–0.234 | 0.10 | Pre-MS star | Jerzykiewicz et al. (2021) |
| HD 25631 | B3 V | 221 | 5.2 | 0.12–0.15 | 0 | Pre-MS star | Nazé et al. (2023) |
| HD 191495 | B0 V | 201 | 3.6 | 0.08–0.12 | 0 | Pre-MS star | Nazé et al. (2023) |
| HD 149834 | B type | 216 | 4.9 | 0.09 | 0.04 | Pre-MS star | Stassun et al. (2021) |
| HD 58730 | Late-B type | 183 ( * *) | 3.6 | 0.07 | < 0.07 | Pre-MS M type star | Stevens et al. (2020) |
Notes. The list of stars is ordered by decreasing mass ratio estimates. ( * )The nature of the secondary component in HD 152200 system requires further investigateion. ( * *)This system does not pass our vsin i selection criteria.
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