Table 5
Choice of the wavelength ranges for the atmospheric model fits, number of Na i lines FWHM encompassed in the wavelength ranges, corresponding altitudes, and fitted temperatures.
| Model atmospheres | Wavelength ranges [Å] | # Na i D’s FWHM | Corresponding altitude [km] | Fitted temperature [K] |
|
|
||||
| Model 0 | 5870.00–5882.22 | – | 0 | 1140 |
| 5903.24–5916.00 | ||||
|
|
||||
| Model 1 | 5882.22–5889.22 | 2–14 | 1500 ± 1500 | 1630 ± 70 |
| (Wing’shoulders) | 5890.26–5895.20 | |||
| 5896.24–5903.24 | ||||
| Model 2a (D1 core) | 5895.20–5895.46 | 1–2 | 2700 ± 800 | 1700 ± 320 |
| 5895.98–5896.24 | ||||
| Model 2b (D2 core) | 5889.22–5889.48 | 1–2 | 3800 ± 900 | 2170 ± 320 |
| 5890.00–5900.26 | ||||
| Model 3a (D1 core) | 5895.46–5895.67 | 0.2–1 | 5100 ± 3100 | 2220 ± 340 |
| 5895.77–5895.98 | ||||
| Model 3b (D2 core) | 5889.48–5889.69 | 0.2–1 | 7900 ± 5500 | 3220 ± 270 |
| 5889.79–5890.00 | ||||
| Model 4a (D1 core) | 5895.67–5895.77 |  0.2 |
9800 ± 2800 | 2600 ± 600 |
| Model 4b (D2 core) | 5889.69–5889.79 | 0.2 |
12 700 ± 2600 | 3270 ± 330 |
Notes. We centered the wavelength ranges on the center of each sodium line in the planet rest frame taking into account the observed blueshift.
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