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Table 1.
Orbital parameters derived based on our orbital analysis and grid disentanglement, along with their 1σ errors (upper) and estimated physical parameters of the components of LB-1 based on a spectral analysis with GSSP and PoWR (lower).
| Parameter | Primary | Secondary |
|---|---|---|
| Spectral type | Stripped star | B3 Ve |
| Porb [d] | 78.7999 ± 0.0097 | |
| T0 [HJD] (ϕ = 0) | 2458845.54 ± 0.03 | |
| e | 0 (fixed) | |
| γ [km s−1] | 28.74 ± 0.09 | |
| K [km s−1] | 52.94 ± 0.13 | 11.2 ± 1.0 |
| Msin3i [M⊙] | 0.38 ± 0.04 | 1.78 ± 0.03 |
| asini [R⊙] | 82.6 ± 0.2 | 17.5 ± 1.6 |
 |
4.7 ± 0.4 | |
| Mdyn [M⊙] | 1.5 ± 0.4 | 7 ± 2 (fixed) |
| i [deg] | 39±4 | |
| Teff [kK] | 12.7 | 18 |
| logg [cgs] | 3.0 | 4.0 |
| flux f/ftot(V) | 0.55 (fixed) | 0.45 (fixed) |
| log L [L⊙] | 2.8 | 3.1 |
| R [R⊙] | 5.4 | 3.7 |
| Mspec [M⊙] | 1.1 | 5 |
| v sini [km s−1] | 7 ± 2 | 300 ± 50 |
| vmacro [km s−1] | 4 ± 2 | 30 (fixed) |
| vmicro [km s−1] | 2 (fixed) | 15 (fixed) |
| Z/Z⊙ | 1 | 1 |
| n(He)/n(H) | 0.21 | Solar (0.08) |
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