Table 5
Atmospheric retrieval results on WASP-33b.
| Parameter | All spectra | Close to eclipse | Far from eclipse | Fe i | Ti i + Ti ii | VI | Unit |
|---|---|---|---|---|---|---|---|
| T1 |  |
 |
 |
 |
 |
 |
K |
| log p1 |  |
 |
 |
 |
 |
 |
log bar |
| T2 |  |
 |
 |
 |
 |
 |
K |
| log p2 |  |
 |
 |
 |
 |
 |
log bar |
| [M/H] |  |
 |
 |
1.49 (fixed) | 1.49 (fixed) | 1.49 (fixed) | dex |
| vbroad | 1.9 ± 0.3 |  |
 |
 |
1.6 ± 0.8 |  |
km s−1 |
| βCV | 0.841 ± 0.002 | 0.842 ± 0.002 | 0.842 ± 0.002 | 0.842 ± 0.002 | 0.842 ± 0.002 | 0.844 ± 0.002 | … |
| βCN | 0.641 ± 0.002 | 0.639 ± 0.002 |  |
0.641 ± 0.002 | 0.641 ± 0.002 | 0.640 ± 0.002 | … |
| βH | 0.795 ± 0.001 | 0.800 ± 0.001 | 0.789 ± 0.001 | 0.795 ± 0.001 | 0.795 ± 0.001 | 0.798 ± 0.001 | … |
| βE | 1.122 ± 0.002 | 1.101 ± 0.002 | 1.155 ± 0.002 | 1.122 ± 0.002 | 1.122 ± 0.002 | 1.124 ± 0.002 | … |
Notes. In total, we ran six different retrievals. Three retrievals were performed with the spectral lines of all the detected species (i.e., Ti i, V i, OH, Fe i, Si i, and Ti ii). We used (i) all the spectra, (ii) a subset of spectra at orbital phases close to the secondary eclipse, and (iii) a subset of spectra far from the secondary eclipse. Another three retrievals were performed by including all the spectra, but only with the emission lines of (iv) Fe i, (v) Ti i + Ti ii combined, and (vi) V i, respectively. We conducted the retrievals by using uniform priors with the boundaries as follows. T1 and T2: 1000–6000 K; p1 and p2: 10−7 to 1 bar; [M/H]: −3 to 3 dex; vbroad: 0–10km s−1; βCV, βCN, βH, and βE: 0–3.
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