Table 9
Grid-fit χ2 results.
| Planet | Model | χ2 | Teff (K) | log g (cgs) | [M/H] | fsed | C/O | λad | Radius (RJup) |
|---|---|---|---|---|---|---|---|---|---|
| b | ATMO | 744 | 1000 | 4.5 | 0.6 | … | 0.3 | 1.05 | 1.00 |
| Diamondback | 879 | 1100 | 3.5 | 0.5 | 2.0 | 0.458 | … | 1.07 | |
| Exo-REM | 510 | 850 | 3.5 | 0.5 | … | 0.55 | … | 1.05 | |
| petitCODE(a) | 968 | 850 | 3.5 | 1.4 | 2.0 | … | … | 0.79 | |
| c | ATMO | 2162 | 1200 | 4.5 | 0.6 | … | 0.3 | 1.01 | 0.97 |
| Diamondback | 3900 | 1200 | 3.5 | 0.5 | 2.0 | 0.458 | … | 1.08 | |
| Exo-REM | 1868 | 1100 | 3.5 | 1.0 | … | 0.8 | … | 1.22 | |
| petitCODE | 7374 | 1200 | 3.5 | 0.3 | 3.0 | 0.55 | … | 1.09 | |
| d(b) | ATMO | 943 | 1300 | 3.0 | 0.6 | … | 0.55 | 1.01 | 0.94 |
| Diamondback | 1336 | 1200 | 3.5 | 0.5 | 1.0 | 0.458 | … | 1.12 | |
| Exo-REM | 936 | 1200 | 3.0 | 1.0 | … | 0.55 | … | 1.12 | |
| petitCODE | 2254 | 1200 | 4.0 | 0.0 | 1.5 | 0.55 | … | 1.21 | |
| e | ATMO | 669 | 1300 | 4.0 | 0.6 | … | 0.55 | 1.03 | 0.81 |
| Diamondback | 819 | 1200 | 3.5 | 0.5 | 2.0 | 0.458 | … | 1.02 | |
| Exo-REM | 623 | 1100 | 3.5 | 1.0 | … | 0.8 | … | 1.15 | |
| petitCODE | 1136 | 1400 | 4.0 | 0.3 | 4.5 | 0.55 | … | 0.74 | |
Notes. All values presented are the single best-fit value according to the χ2. All of the models share a similar number of parameters, which are listed in Table 7. Additional parameters for data scaling and covariance fitting are shared between all models. (a) for HR 8799 b, the petitcode-cool-cloudy grid was used rather than the petitcode-hot-cloudy grid. (b) the fits for HR 8799 d included a scaling parameter for the ALES data.
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