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Table A.1
System parameters of WASP-18A.
| Parameter | Units | This study | Hellier et al. (2009) | Shporer et al. (2019) |
|---|---|---|---|---|
| Stellar parameters: | ||||
| M* | Mass (M⊙) |  |
1.25 ± 0.13 | |
| R* | Radius (R⊙) |  |
 |
|
| L* | Luminosity (L⊙) |  |
||
| ρ* | Density (cgs) |  |
 |
|
| log g | Surface gravity (cgs) |  |
 |
|
| Teff | Effective temperature (K) | 6432 ± 48 | 6400 ± 100 | |
| [Fe/H] | Metallicity | 0.107 ± 0.080 | 0.00 ± 0.09 | |
| Age | Age (Gyr) |  |
0.5 − 1.5 | |
| Planetary parameters: | ||||
| RP | Radius (RJ) | 1.240 ± 0.079 |  |
1.192 ± 0.038 |
| MP | Mass (MJ) | 10.20 ± 0.35 | 10.30 ± 0.69 | |
| P | Period (days) | 0.94145223 ± (24)(b) | 0.94145299 ± (87)(b) |  (b) |
| e | Eccentricity |  |
0.0092 ± 0.0028 | |
| a | Semi-major axis (AU) |  |
0.02045 ± 0.00067 | |
| ω* | Argument of Periastron (degrees) |  |
||
| ρP | Density (cgs) |  |
 (a) |
|
| log gP | Surface gravity |  |
 |
|
| Teq | Equilibrium temperature (K) |  |
 |
|
| Θ | Safronov number |  |
||
| ⟨F⟩ | Incident flux (109 erg s−1 cm−2) |  |
||
| Primary transit parameters: | ||||
| T0 | Transit time (BJDTDB) | 2456740.80560 ± (19)(b) | 2454221.48163 ± (38)(b) |  (b) |
| i | Inclination (degrees) |  |
86.0 ± 2.5 |  |
| RP∕R* | Radius of planet in stellar radii | 0.1018 ± 0.0011 | 0.0935 ± 0.0011 |  |
| a∕R* | Semi-major axis in stellar radii |  |
 |
|
| b | Impact parameter |  |
0.25 ± 0.15 |  |
| δ | Transit depth (fraction) | 0.01041 ± 0.00022 |  |
|
| u1,I | Linear LD coeff., I band | 0.207 ± 0.019 | ||
| u2,I | Quadratic LD coeff., I band | 0.313 ± 0.019 | ||
| u1,R | Linear LD coeff., R band | 0.257 ± 0.045 | ||
| u2,R | Quadratic LD coeff., R band | 0.309 ± 0.048 | ||
| T14 | Total transit duration (days) |  |
0.08932 ± 0.00068 | |
| PT | A priori non-grazing transit prob |  |
||
| PT,G | A priori transit prob |  |
||
| τ | Ingress/egress transit duration (days) | 0.0099 ± 0.0012 | ||
| RV parameters: | ||||
| e cos ω* |  |
|||
| e sin ω* |  |
|||
| K | RV semi-amplitude (m s−1) |  |
1818.3 ± 8.0 | |
| MP sin i | Minimum mass (MJ) | 10.14 ± 0.33 | ||
| Secondary eclipse parameters: | ||||
| TS | Time of eclipse (BJDTDB) |  |
||
| bS | Eclipse impact parameter |  |
||
| τS | Ingress/egress eclipse duration (days) |  |
||
| TS,14 | Total eclipse duration (days) | 0.0917 ± 0.0016 | ||
| PS | A priori non-grazing eclipse prob |  |
||
| PS,G | A priori eclipse prob |  |
||
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