Table 1.
Derived orbital parameters based on our orbital analysis and disentangling, along with their 1σ errors (upper) and estimated physical parameters of the components of HR 6819 based on a spectral analysis with PoWR and TLUSTY (lower).
| Parameter | Primary | Secondary |
|---|---|---|
| Spectral type | Stripped star | B2-3 Ve |
| Porb [d] | 40.335 ± 0.007 | |
| T0 [MJD] (Φ = 0) | 53116.9 ± 1.1 | |
| e | 0 (fixed) | |
| γ [km s−1] | 9.13 ± 0.78 | |
| K [km s−1] | 60.4 ± 1.0 | 4.0 ± 0.8 |
| M sin3i [M⊙] | 0.07 ± 0.03 | 1.05 ± 0.02 |
| a sin i [R⊙] | 48.2 ± 0.8 | 3.2 ± 0.6 |
 |
15 ± 3 | |
| Mdyn [M⊙] | 0.46 ± 0.26 | 7 ± 2 (fixed) |
| i [deg] | 32±4 | |
| Teff [kK] | 16 ± 1 | 20 ± 2 |
| log g [cgs] | 2.8 ± 0.2 | 4.0 ± 0.3 |
| Flux f/ftot(V) | 0.45 (fixed) | 0.55 (fixed) |
| log L [L⊙] | 3.05 ± 0.10 | 3.35 ± 0.10 |
| R [R⊙] | 4.4 ± 0.4 | 3.9 ± 0.7 |
| Mspec [M⊙] |
 |
 |
| v sin i [km s−1] | ≲25 | 180 ± 10 |
| veq [km s−1] | ≲40 | 340 ± 40 |
| vmacro [km s−1] | 35 ± 5 | 70 ± 25 |
| vmicro [km s−1] | 10 (fixed) | 2 (fixed) |
Notes. The luminosity and radii are obtained for an assumed distance of 340 pc (Bailer-Jones et al. 2018).
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