Table 4.
Parameters for the two O-type stars.
| Param. | Observed |
Single |
Binary (conservative) |
|||
|---|---|---|---|---|---|---|
| O1 | O2 | O1 | O2 | O1 | O2 | |
| Minitial [M⊙] | 36 ± 3 | 15 ± 2 | 23 | 29 | ||
| Age [Myr] | 4.2 ± 0.5 (a) | 4.2 ± 0.5 (a) |  |
 |
4.6 | 4.6 |
| Mcur [M⊙] | 36 ± 5 | 15 ± 2 | 36 ± 3 | 15 ± 2 | 32 | 19 |
| Rcur [R⊙] | 9.37 ± 1.77 | 6.68 ± 1.74 |  |
 |
9.2 | 7.2 |
| Teff, cur [kK] | 42.5 ± 1.3 | 37.5 ± 1.3 | 42.6 ± 1.1 |  |
40.3 | 36.3 |
| log(Lcur/L⊙) | 5.41 ± 0.22 | 4.90 ± 0.33 |  |
 |
5.30 | 4.91 |
| Pinitial [days] | 1.3 | |||||
| Pcur [days] | 1.55 | 1.6 | ||||
Notes. The relevant observed parameters for an evolutionary analysis are shown. Values for single star evolution are obtained with BONNSAI. Values for the binary evolution are those of the MESA simulation with conservative mass transfer that best fits the values of the observed parameters.
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