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Table 11.
Physical properties of MML53 eclipsing stars and their orbit.
| Parameter | Value | Units | |
|---|---|---|---|
| Orbital period |  |
2.097892 ± 0.000005 | days |
| Eccentricity | e | 0. | (fixed) |
| Mass ratio | qEB = M2/M1 | 0.8565 ± 0.0034 | |
| Systemic velocity |  |
0.77 ± 0.15 | km s−1 |
| Semi-major axis | a sin i | 8.492 ± 0.017 | R⊙ |
| a | 8.584 ± 0.018 | R⊙ | |
| a | 0.03992 ± 0.00008 | au | |
| Binary total mass | MB | 1.9307 ± 0.0119 | M⊙ |
| Inclination | i | 81.61 ± 0.12 | ° |
| Sum of fractional radii | r1 + r2 | 0.2784 ± 0.0027 | |
| Temperature ratio | Teff, 2/Teff, 1 | 0.8972 ± 0.0018 | |
| Primary mass | M1 | 1.0400 ± 0.0067 | M⊙ |
| Primary radius | R1 | 1.283 ± 0.043 | R⊙ |
| Primary surface gravity | log g1 | 4.24 ± 0.03 | dex (cgs) |
| Primary temperature | Teff, 1 | 4880 ± 100 | K |
| Secondary mass | M2 | 0.8907 ± 0.0058 | M⊙ |
| Secondary radius | R2 | 1.107 ± 0.049 | R⊙ |
| Secondary surface gravity | log g2 | 4.30 ± 0.04 | dex (cgs) |
| Secondary temperature | Teff, 2 | 4379 ± 100 | K |
Notes. (a)The orbital period was adopted from the analysis of Hebb et al. (2010). (b)Systemic velocity of the EB components at the time of the UVES RV observations.
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