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Table 4
Kepler-43 system parameters.
| Fitted system parameters | Bonomo et al. (2012a) | This work |
|
|
||
| Orbital period P [days] | 3.024095 ± 0.000021 | 3.02409309 ± 0.00000020 |
| Transit epoch T0 [BJDTDB − 2 454 900] | 165.4159 ± 0.0006 | 195.45227 ± 0.00005 |
| Transit duration T14 [h] | 2.926 ± 0.019 | 2.900 ± 0.003 |
| Radius ratio Rp/R∗ |
|
0.08647 ± 0.00019 |
| Inclination i [deg] |
|
|
| Limb-darkening coefficient q1 | – | 0.36 ± 0.02 |
| Limb-darkening coefficient q2 | – | 0.30 ± 0.04 |
|
– | 0.061 ± 0.030 |
|
– |
|
| Orbital eccentricity e | < 0.025 |
|
| Argument of periastron [deg] ω | – |
|
| Radial-velocity semi-amplitude K [ m s-1] | 375 ± 13 | 373 ± 9 |
| Systemic velocity Vr [ km s-1] | −37.591 ± 0.007 | −37.591 ± 0.007 |
| RV jitter [ m s-1] sj | – | < 6 |
| Derived transit parameters | ||
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||
| a/R∗ |
|
|
| Stellar density ρ∗ [gcm-3] |
|
|
| Impact parameter b |
|
0.648 ± 0.004 |
| Limb-darkening coefficient ua | 0.375 ± 0.026 a | 0.36 ± 0.04 |
| Limb-darkening coefficient ub | 0.277 ± 0.015 a | 0.24 ± 0.05 |
| Atmospheric parameters of the star | ||
|
|
||
| Effective temperature Teff[K] | 6041 ± 143 | 6050 ± 100 |
| Spectroscopic surface gravity log g [cgs] | 4.64 ± 0.13 | 4.4 ± 0.1 |
| Derived surface gravity log g [cgs] | 4.26 ± 0.05 | 4.26 ± 0.02 |
| Metallicity [Fe/H] [dex] | 0.33 ± 0.11 | 0.40 ± 0.10 |
| Stellar rotational velocity Vsini∗ [ km s-1] | 5.5 ± 1.5 | 5.5 ± 1.5 |
| Spectral type | F8V | F8V |
| Stellar and planetary physical parameters | ||
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| Stellar mass [M⊙] | 1.32 ± 0.09 | 1.27 ± 0.04 |
| Stellar radius [R⊙] | 1.42 ± 0.07 |
|
| Planetary mass Mp [MJup] | 3.23 ± 0.19 | 3.13 ± 0.10 |
| Planetary radius Rp [RJup] | 1.20 ± 0.06 |
|
| Planetary density ρp [gcm-3] | 2.33 ± 0.36 |
|
| Planetary surface gravity log gp [cgs] | 3.75 ± 0.04 |
|
| Age t [Gyr] |
|
|
| Orbital semi-major axis a [au] | 0.0449 ± 0.0010 | 0.0444 ± 0.0005 |
| Equilibrium temperature Teq [K]b | 1637 ± 47 | 1628 ± 33 |
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