Table 1
Spectroscopic orbital solutions for both the main-sequence (MS) and subdwarf-B (sdB) component of BD−7°5977, EC 11031–1348, TYC 2084–448–1, TYC 3871–835–1 and PG 1104+243.
| Parameter | BD−7°5977 | EC 11031–1348 | TYC 2084–448–1 | TYC 3871–835–1 | PG 1104+243 | |||||
|
|
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| P (d) | 1262 ± 1 | 1099 ± 6 | 1098 ± 5 | 1263 ± 5 | 755 ± 3 | |||||
| T0 (d) | 2 454 971 ± 4 | 2 456 600 ± 20 | 2 456 054 ± 58 | 2 454 075 ± 18 | 2 450 480 ± 8 | |||||
| e | 0.16 ± 0.01 | 0.17 ± 0.03 | 0.05 ± 0.03 | 0.16 ± 0.02 | 0.04 ± 0.02 | |||||
| ω | 5.5 ± 0.1 | 3.9 ± 0.1 | 5.63 ± 0.33 | 2.83 ± 0.08 | 0.70 ± 0.02 | |||||
| q (sdB/MS) | 0.4 ± 0.1 | 0.36 ± 0.02 | 0.51 ± 0.02 | 0.54 ± 0.05 | 0.70 ± 0.02 | |||||
| KMS (km s-1) | 2.62 ± 0.01 | 5.55 ± 0.15 | 6.30 ± 0.10 | 2.31 ± 0.04 | 4.42 ± 0.04 | |||||
| γMS (km s-1) | –8.62 ± 0.00 | –14.75 ± 0.08 | –15.56 ± 0.06 | –14.98 ± 0.02 | –15.59 ± 0.06 | |||||
| MMSsin3i (M⊙) | 0.06 ± 0.03 | 0.77 ± 0.07 | 0.48 ± 0.03 | 0.02 ± 0.01 | 0.057 ± 0.002 | |||||
| aMSsini (R⊙) | 64 ± 15 | 120 ± 6 | 136 ± 5 | 56 ± 3 | 66 ± 1 | |||||
| KsdB (km s-1) | 6.2 ± 1.0 | 15.5 ± 0.6 | 12.25 ± 0.30 | 4.24 ± 0.20 | 6.34 ± 0.2 | |||||
| γsdB (km s-1) | –5.5 ± 1.0 | –11.4 ± 0.3 | –13.30 ± 0.20 | –13.36 ± 0.12 | –13.8 ± 0.2 | |||||
| MsdBsin3i (M⊙) | 0.03 ± 0.01 | 0.28 ± 0.04 | 0.25 ± 0.02 | 0.010 ± 0.005 | 0.039 ± 0.004 | |||||
| asdBsini (R⊙) | 152 ± 25 | 330 ± 12 | 330 ± 11 | 104 ± 8 | 95 ± 2 | |||||
Notes. The parameters are: orbital period (P), time of periastron (T0), eccentricity (e), angle of periastron (ω), mass ratio (q) and for both component the amplitude (K), system velocity (γ), reduced mass (Msin3i) and the reduced semi-major axis (a ~ i).
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