Free Access
Table 2
Derived physical properties for the WASP-20 system.
| Parameter | Symbol | Anderson et al. (2015) | Planet transits brighter | Planet transits |
|---|---|---|---|---|
| star (adopted solution) | fainter star | |||
| Sum of the fractional radii | rA + rb | 0.1100 ± 0.0036 |  |
|
| Ratio of the radii | k = Rb∕RA | 0.1079 ± 0.0011 | 0.1143 ± 0.0040 | 0.192 ± 0.014 |
| Inclination (°) | i | 85.56 ± 0.22 | 86.36 ± 0.33 | 89.24 ± 0.87 |
| Fractional radius of the star | rA = RA∕a | 0.1078 ± 0.0027 | 0.0987 ± 0.0034 |  |
| Fractional radius of the planet | rb = Rb∕a | 0.01129 ± 0.00046 | 0.01481 ± 0.00080 | |
| Stellar mass (M⊙) | MA | 1.200 ± 0.041 | 1.113 ± 0.027 ± 0.021 | 0.900 ± 0.088 |
| Stellar radius (R⊙) | RA | 1.392 ± 0.044 | 1.242 ± 0.044 ± 0.008 | 0.903 ± 0.052 |
| Stellar surface gravity (cgs) | log gA | 4.231 ± 0.020 | 4.296 ± 0.030 ± 0.003 | 4.481 ± 0.043 |
| Stellar density (ρ⊙) | ρA | 0.447 ± 0.033 | 0.581 ± 0.060 | 1.22 ± 0.17 |
| Age (Gyr) | τ |  |
 |
 |
| Planet mass (MJup) | Mb | 0.311 ± 0.017 | 0.396 ± 0.046 ± 0.005 | 0.998 ± 0.087 |
| Planet radius (RJup) | Rb | 1.462 ± 0.059 | 1.382 ± 0.057 ± 0.008 | 1.69 ± 0.11 |
| Planet surface gravity (m s−2) | gb | 2.530 ± 0.036 | 5.13 ± 0.73 | 8.7 ± 1.1 |
| Planet density (ρJup) | ρb | 0.099 ± 0.012 | 0.140 ± 0.024 ± 0.001 | 0.193 ± 0.034 |
| Equilibrium temperature (K) | Teq | 1379 ± 31 | 1330 ± 25 | 1027 ± 52 |
| Orbital semimajor axis (au) | a | 0.0600 ± 0.0007 | 0.05851 ± 0.00047 ± 0.00036 | 0.0545 ± 0.0018 |
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.