Table 9.
System parameters of HY Eri for models with main sequence and bloated secondary stars, derived with the radial velocity amplitude of the Mg I line and the irradiation model BT08.
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) | (13) | (14) | (15) | (16) | (17) | (18) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Row |  |
f3 | i | q | M2 | R2 |  |
KL1 | Kterm | M1 | R1, He | R1, CO | d | R1, sp | R1/R1, sp | R1/d | Tph |
| (km s−1) | (°) | (M⊙) | (R⊙) | (km s−1) | (M⊙) | (109 cm) | (pc) | (109 cm) | (109 cm kpc−1) | (kK) | |||||||
| (a) Main sequence models: | |||||||||||||||||
| 1 | 129 | 1.000 | 79.1 | 0.656 | 0.308 | 0.320 | 1.83 | 57 | 186 | 0.469 | 1.116 | 1167 ± 95 | 1.343 ± 0.189 | 0.83 | 0.956 | 10.19 | |
| 2 | 139 | 1.000 | 79.8 | 0.615 | 0.305 | 0.318 | 1.76 | 67 | 196 | 0.497 | 1.065 | 1160 ± 94 | 1.334 ± 0.188 | 0.80 | 0.918 | 10.42 | |
| 3 | 149 | 1.000 | 80.4 | 0.577 | 0.304 | 0.317 | 1.71 | 76 | 207 | 0.526 | 0.969 | 1154 ± 93 | 1.327 ± 0.187 | 0.73 | 0.840 | 10.92 | |
| (b) Best-fit model with bloated secondary star | |||||||||||||||||
| 4 | 139 | 1.120 | 80.5 | 0.568 | 0.235 | 0.290 | 1.70 | 72 | 192 | 0.413 | 1.217 | 1054 ± 85 | 1.217 ± 0.172 | 1.00 | 1.150 | 9.20 | |
| (c) Models with bloated secondaries, delineating the 90% confidence limits | |||||||||||||||||
| 5 | 139 | 1.035 | 80.0 | 0.600 | 0.281 | 0.309 | 1.74 | 68 | 195 | 0.469 | 1.117 | 1127 ± 91 | 1.296 ± 0.183 | 0.86 | 0.991 | 10.00 | |
| 6 | 149 | 1.135 | 81.4 | 0.524 | 0.224 | 0.285 | 1.64 | 83 | 202 | 0.427 | 1.190 | 1037 ± 84 | 1.192 ± 0.168 | 1.00 | 1.148 | 9.20 | |
| 7 | 129 | 1.095 | 79.7 | 0.617 | 0.247 | 0.297 | 1.77 | 62 | 183 | 0.401 | 1.244 | 1081 ± 88 | 1.244 ± 0.175 | 1.00 | 1.150 | 9.20 | |
| 8 | 139 | 1.190 | 81.1 | 0.541 | 0.201 | 0.275 | 1.66 | 75 | 189 | 0.371 | 1.313 | 1002 ± 81 | 1.152 ± 0.162 | 1.14 | 1.310 | 8.60 | |
Notes. The columns contain 
(2), the bloating factor f3 (3), the derived model parameters (3–11), the model radius of the He-core of CO-core WD of the mass of Col. (11) cooled to 10 kK (12,13), the distance (14), the spectroscopically derived WD radius (15), the ratio of the radii (16), the angular radius of the WD (17), and its implied photospheric temperature (18).
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