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Table 2.
Required kick velocities.
| Spectral | vkick, min | vkick, min | ⟨vkick⟩ | ⟨vkick⟩ | vkick, max | vkick, max | |
|---|---|---|---|---|---|---|---|
| System | type | P = 15 d | disrupted | P = 15 d | disrupted | P = 15 d | disrupted |
| WR21 | WN5+O4-5 | 24 | 140 | 130 | 338 | 701 | 817 |
| WR30 | WC6+O6-8 | – | 117 | – | 284 | – | 685 |
| WR31 | WN4+O8V | 75 | 152 | 246 | 367 | 809 | 886 |
| WR35a | WN6+O8.5V | – | 66 | – | 160 | – | 387 |
| WR42 | WC7+O7V | 51 | 148 | 197 | 358 | 767 | 864 |
| WR47 | WN6+O5V | 95 | 196 | 315 | 472 | 1039 | 1140 |
| WR79 | WC7+O5-8 | 45 | 134 | 175 | 324 | 692 | 781 |
| WR97 | WN5+O7 | – | 114 | – | 275 | – | 664 |
| WR113 | WC8+O8-9IV | – | 83 | – | 201 | – | 485 |
| WR11 | WC8+O7.5III-V | – | 68 | – | 164 | – | 395 |
| WR127 | WN3+O8.5V | 20 | 115 | 107 | 278 | 576 | 671 |
| WR139 | WN5+O6III-V | 94 | 167 | 292 | 405 | 903 | 977 |
| WR151 | WN4+O5V | 132 | 198 | 378 | 478 | 1087 | 1153 |
| WR133 | WN5+O9I | – | 57 | – | 138 | – | 334 |
| WR141 | WN5+O5III-V | – | 89 | – | 215 | – | 519 |
| WR155 | WN6+O9II-Ib | 162 | 224 | 448 | 540 | 1242 | 1303 |
| WR9 | WC5+O7 | – | 123 | – | 296 | – | 715 |
Notes. For the WR+O binaries listed in Table 1, we calculated the vkick needed to obtain a BH+O binary with a period of 15 days (we also give the value to disrupt the binary). The meaning of vkick, min, ⟨vkick⟩, and vkick, max is explained in the text. Velocities in km s−1.
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