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Table 4
Planet and star parameters.
| Ephemeris | |
|
|
|
| Planet b orbital period P [days] | 5.1134 ± 0.0006 |
| Planet b transit epoch of Ttrb [HJD-2400000] | 54789.611 ± 0.006 |
| Planet b transit duration dtr [h] | 2.85 ± 0.25 |
|
|
|
| Planet c orbital period P [days] | 11.759 ± 0.0063 |
| Planet c transit epoch Ttrc [HJD-2400000] | 54795.3803 ± 0.0265 |
| Planet c transit duration dtr [h] | 4.8 ± 0.2 |
|
|
|
| Results from radial velocity observations | |
|
|
|
| Radial velocity semi-amplitude Kb [ m s-1] | <2.1 |
| Radial velocity semi-amplitude Kc [ m s-1] | 8.3 |
| Systemic velocity Vr [ km s-1] | ~51.37 |
| Eccentricity b and c | 0. (fixed) |
|
|
|
| Fitted transit parameters | |
|
|
|
| Radius ratio kb = Rp/R∗ | 0.0370 ± 0.0021 |
| Radius ratio kc = Rp/R∗ | 0.0500 ± 0.0010 |
| Inclination ib [deg] | 86.5 ± 2 |
| Inclination ic [deg] | 89  |
| Phase of transit ingress θ1,b | 0.0116 ± 0.0010 |
| Phase of transit ingress θ1,c | 0.0084 ± 0.0003 |
|
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| Adopted parameters | |
|
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|
| Limb darkening coefficient ua | 0.58 ± 0.04 |
| Limb darkening coefficient ub | 0.13 ± 0.04 |
|
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|
| Deduced transit parameters | |
|
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|
| Scaled semi-major axis ab/R∗ | 10.9 ± 2.8 |
| Scaled semi-major axis ac/R∗ | 18.0 ± 2.5 |
 [solar
units], estimated from transits of b |
0.88 ± 0.22 |
| [solar
units], estimated from transits of c |
0.85 ± 0.13 |
| Impact parameter bb | 0.65 ± 0.3 |
| Impact parameter bc | 0.3 ± 0.4 |
|
|
|
| Spectroscopic parameters | |
|
|
|
| Effective temperature Teff[K] | 4950 ± 150 |
| Surface gravity log g [dex] | 4.55 ± 0.15 |
| Metallicity [ Fe / H ] [dex] | 0.30 ± 0.15 |
| Stellar rotational velocity v sin i⋆[ km s-1] | 2.0 |
| Spectral type | K1V |
|
|
|
| Stellar and planetary physical parameters from combined analysis | |
|
|
|
| Star mass [M⊙] | 0.91 ± 0.09 |
| Star radius [R⊙] | 0.86 ± 0.09 |
| Distance of the system [pc] | 600 ± 70 |
| Interstellar extinction [mag] | 0.30 ± 0.25 |
| Stellar rotation period Prot [days] | ~29 |
| Age of the star t [Gyr] | ~11 |
| Orbital semi-major axis ab [AU] | 0.056 ± 0.002 |
| Orbital semi-major axis ac [AU] | 0.098 ± 0.003 |
| Planet b mass Mp [MJ]a | <0.018 |
| Planet c mass Mp [MJ]a | 0.088 |
| Planet b mass Mp [ME]a | <5.7 |
| Planet c mass Mp [ME]a | 28 |
| Planet b radius Rp[RJ]a | 0.33 ± 0.04 |
| Planet c radius Rp[RJ]a | 0.44 ± 0.04 |
| Planet b radius Rp[RE]a | 3.7 ± 0.4 |
| Planet c radius Rp[RE]a | 5.0 ± 0.5 |
| Planet b density ρp [gcm-3] | <0.9 |
| Planet c density ρp [gcm-3] | 1.3  |
| Equilibrium temperatureb planet b, Teq,b [K] | 1070 ± 140 |
| Equilibrium temperatureb planet c, Teq,c [K] | 850 ± 80 |
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