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Table 1
Median and 1σ limits of the posterior marginalised PDFs obtained for the WASP-47 system derived from our global MCMC analysis.
| MCMC Jump parameters | |
|
|
|
| Star | |
| Teff [K] | 5576 ± 68 |
| [Fe/H] | 0.36 ± 0.05 |
| c 1 | 1.17 ± 0.03 |
| c 2 | −0.02 ± 0.02 |
| Planet b | |
| Pb [d] | 4.1591409 ± 0.0000072 |
| T0,b – 2 450 000 [BJDTDB] | 5764.3463 ± 0.0002 |
|
0.04 ± 0.06 |
|
0.01 ± 0.09 |
 [m s-1 d1/3] |
225.7 ± 3.6 |
| Planet c | |
| Pc [d] | 572 ± 7 |
| T0,c – 2 450 000 [BJDTDB] | 5981 ± 16 |
|
−0.21± 0.24 |
|
0.16 ± 0.20 |
 [m s-1 d1/3] |
248 ± 43 |
|
|
|
| Derived parameters | |
|
|
|
| Star | |
| u 1 | 0.462 ± 0.014 |
| u 2 | 0.242 ± 0.010 |
| Density ρ⋆ [ρ⊙] | 0.68 ± 0.06 |
| Surface gravity log g⋆ [cgs] | 4.32 ± 0.05 |
| Mass M⋆ [M⊙] | 1.026 ± 0.076 |
| Radius R⋆ [R⊙] | 1.15 ± 0.04 |
| Luminosity L⋆ [L⊙] | 1.14 ± 0.11 |
| Planet b | |
| Mass Mp,b [MJup] | 1.13 ± 0.06 |
| RV amplitude Kb [m s-1] | 140 ± 2 |
| Orbital eccentricity eb | <0.026 (at 2σ) |
| Orbital semi-major axis ab [au] | 0.051 ± 0.001 |
| Density ρp,b [ρJ] | 0.71 ± 0.08 |
| Surface gravity log gp,b [cgs] | 3.33 ± 0.03 |
| Equilibrium temperature Teq,b* [K] | 1275 ± 23 |
| Planet c | |
| Minimum mass Mp,csinip,c [MJup] | 1.24 ± 0.22 |
| RV amplitude Kc [m s-1] | 30 ± 6 |
| Orbital eccentricity ec | 0.13 ± 0.10 |
| Argument of periastron ωc [°] | 144 ± 53 |
| Orbital semi-major axis ac [au] | 1.36 ± 0.04 |
Equilibrium temperature  [K] |
247 ± 5 |
| a c / R ⋆ | 255 ± 7 |
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