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Table 10.
System parameters of HY Eri with 90% confidence errors.
| Parameter | Value | Error |
|---|---|---|
| Orbital period Porb (s) | 10278.9 | |
| Eclipse duration FWHMΔ tecl (s) | 910.6 | 1.5 |
| Primary mass M1 (M⊙) | 0.42 | 0.05 |
| Primary radius R1 at Tph (109 cm) | 1.22 | 0.10 |
| Secondary mass M2 (M⊙) | 0.24 | 0.04 |
| Secondary radius R2 (R⊙) | 0.29 | 0.02 |
| Mass ratio q | 0.57 | 0.06 |
| Binary separation a (1010 cm) | 6.16 | 0.28 |
| Inclination i (°) | 80.6 | 0.9 |
| Distance d (pc) | 1050 | 110 |
| Teff of secondary (K) | 3000 | 100 |
| Luminosity of secondary Lbol (1031 erg s−1) | 2.3 | 0.6 |
| Teff of photosphere of WD Tph (kK) | 9.2 | 0.7 |
| Teff of pole cap of WD Tcap (kK) | 14.2 | 1.0 |
| Weighted mean of Tph and Tcap (kK) | 10.1 | 0.9 |
| Teff of spot 1 of WD Tsp (kK) | 78.0 (1) | 8.0 |
| Magnetic field strength in spot 1 Bsp, 1 (MG) | 27.4 | 0.2 |
| Magnetic field strength in spot 2 Bsp, 2 (MG) | 28.7 | 0.3 |
Notes. (1) Subject to the spot size.
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