Table 2
Stellar and wind parameters of the GW progenitor models on the main sequence, compared to the earliest-type main sequence stars observed in the SMC and IC 1613 (see the original publications for details).
| Models of BH progenitors | Empirical parameters of early low-Z O stars | ||||||
|
|
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| Identifier | MI 1 | MII 1 | E 5 | Sk 183 | Cl* NGC MPG 324 | Cl* NGC MPG 355 | [BUG2007] A 13 |
| (Table 1) | (Table A.2) | (Table A.3) | |||||
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|
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| Spectral type | O3 V((f*)) | O3 V((f*)) | O3 V((f*))z | O3 V((f*)) | O4 V((f)) | O2 III(f*) | O3 V((f)) |
| T∗ [kK] | 52.2 | 50.4 | 54.1 | 47.5 | 41.5 | 52.5 | 42.5 |
| log (L/L⊙) | 5.7 | 5.5 | 5.6 | 5.6 | 5.5 | 6.0 | 5.6 |
| vrot [km s-1] | 381 | 433 | 60/sini | 70/sini | 110/sini | ||
| v∞ [km s-1] | 3160 | 2790 | 1980 | 3000 | 2300 | 2200 | 2800 |
| M∗ [M⊙] | 63 | 50 | 50 | 38 | 44 | 64 | 30 |
| Z/Z⊙ | 0.1 | 0.05 | 0.005 | 0.2 | 0.2 | 0.2 | 0.14 |
| log Ṁ [M⊙ yr-1] | –6.0 | –6.7 | –7.8 | –7.0 | –7.0 | –6.7 | –6.6 |
Notes. Empirically derived stellar parameters for the SMC stars: Sk 183 (Evans et al. 2012); Cl* NGC 346 MPG 324, Cl* NGC 346 MPG 355 (Bouret et al. 2003); [BUG2007] A 13 (Garcia et al. 2014; Bouret et al. 2015).
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