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Table 4
Planetary and stellar parameters for the systems KOI-200 and KOI-889.
KOI-200 | KOI-889 | |
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Ephemeris and orbital parameters: | ||
Planet orbital period P [days] | 7.340718 ± 0.000001 | 8.884924 ± 0.000002 |
Transit epoch T0 [BJD – 2 454 900] | 67.3453 ± 0.0003 | 102.9910 ± 0.0002 |
Periastron epoch Tp [BJD – 2 454 900] |
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102.841 ± 0.011 |
Orbital eccentricity e | 0.287 ± 0.062 | 0.569 ± 0.010 |
Argument of periastron ω [°] | 64 ± 21 | 63.6 ± 1.4 |
Orbital inclination ip [°] | 85.55 ± 0.96 |
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Transit duration T1 − 4 [hours] | 2.699 ± 0.038 | 1.872 ± 0.025 |
Primary impact parameter bprim | 0.684 ± 0.032 | 0.14 ± 0.14 |
Secondary impact parameter bsec | 1.11 ± 0.23 |
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Fitted transit-related parameters: | ||
System scale a/R⋆ |
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19.6 ± 0.6 |
Radius ratio k = Rp/R⋆ | 0.090 ± 0.002 | 0.121 ± 0.002 |
Linear limb darkening coefficient ua |
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0.53 ± 0.09 |
Quadratic limb darkening coefficient ub | 0.6 ± 0.4 | 0.13 ± 0.26 |
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Fitted RV-related parameters: | ||
Semi-amplitude K [m s-1] | 58 ± 7 | 1288 ± 24 |
SOPHIE systemic radial velocity V0,S [km s-1] |
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−64.235 ± 0.012 |
HARPS-N systemic radial velocity V0,H [km s-1] | 19.356 ± 0.008 | −64.175 ± 0.050 |
SOPHIE O-C residuals [m s-1] | 35 | 17 |
HARPS-N O-C residuals [m s-1] | 6 | 50 |
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Data-related parameters: | ||
Kepler season 0 contamination [%] | 4.5 ± 0.3 | 10.9 ± 0.4 |
Kepler season 1 contamination [%] | 4.9 ± 0.3 | 13.7 ± 0.4 |
Kepler season 2 contamination [%] | 5.9 ± 0.3 | 13.6 ± 0.4 |
Kepler season 3 contamination [%] | 4.7 ± 0.3 | 10.2 ± 0.4 |
Kepler season 0 jitter [ppm] | 89 ± 12 | 322 ± 43 |
Kepler season 1 jitter [ppm] | 118 ± 12 | 329 ± 33 |
Kepler season 2 jitter [ppm] | 101 ± 16 | 328 ± 36 |
Kepler season 3 jitter [ppm] | 99 ± 14 | 271 ± 28 |
SOPHIE jitter [m s-1] | 28 ± 13 | <8 |
HARPS-N jitter [m s-1] | <5 | <17 |
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Spectroscopic parameters: | ||
Effective temperature Teff[K] | 6050 ± 110 | 5330 ± 120 |
Metallicity [Fe/H] [dex] | 0.34 ± 0.14 | −0.07 ± 0.15 |
Stellar rotational velocity vsini∗ [km s-1] | 5.0 ± 1.0 | 3.5 ± 1.5 |
Stellar macroturbulence vmacro [km s-1] | 2.0 ± 1.0 | – |
Spectral type | F8V | G8V |
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Photometric parameter: | ||
Stellar rotation period [days] | – | 19.2 ± 0.3 |
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Stellar physical parameters from combined analysis: | ||
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1.084 ± 0.035 |
Stellar density ρ⋆ [gcm-3] |
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1.79 ± 0.17 |
Star mass M⋆ [M⊙] |
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0.88 ± 0.06 |
Star radius R⋆ [R⊙] | 1.51 ± 0.14 | 0.88 ± 0.04 |
Stellar surface gravity log g∗ | 4.2 ± 0.1 | 4.5 ± 0.1 |
Age of the star [Gyr] |
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6 ± 3 |
Distance of the system [pc] | 1330 ± 170 |
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Interstellar extinction E(B − V) | 0.16 ± 0.03 |
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Planetary physical parameters from combined analysis: | ||
Orbital semi-major axis a [AU] | 0.084 ± 0.014 | 0.080 ± 0.005 |
Periastron distance (1 − e) a [AU] | 0.060 ± 0.011 | 0.034 ± 0.002 |
Apoastron distance (1 + e) a [AU] | 0.108 ± 0.019 | 0.126 ± 0.008 |
Planet mass Mp [MJup] | 0.68 ± 0.09 | 9.9 ± 0.5 |
Planet radius Rp[RJup] | 1.32 ± 0.14 | 1.03 ± 0.06 |
Planet density ρp [gcm-3] | 0.37 ± 0.13 | 11 ± 2 |
Planetary equilibrium temperature at a-distance Tp, a (K) | 1250 ± 120 | 850 ± 40 |
Planetary equilibrium temperature at periastron Tp, per (K) | 1450 ± 150 | 1300 ± 60 |
Planetary equilibrium temperature at apoastron Tp, apo (K) | 1100 ± 110 | 680 ± 30 |
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