Table 2
Parameters derived from the reconstruction of the Lyman-α line profile in Visits 2 and 3.
| Parameter | Visit 2 | Visit 3 | Unit | |
|
|
||||
| Fit range | Blue wing | [1214.64–1215.53] | [1214.68–1215.53] | Å |
| Red wing | [1215.75–1216.70] | [1215.75–1216.54]† | Å | |
| ISM (H i) | log10 N(H i) | 18.01 ± 0.07 | 17.90 |
cm-2 |
| b(H i) | 9.9 |
12.3 |
km s-1 | |
| γ(H i)/∗ | –9.1 |
–9.2 |
km s-1 | |
| LSF | σ LSF | 0.97 ± 0.14 | 1.25 |
HST pixels |
| Stellar line | fpeak(1 au) | 1.55 |
1.62 |
erg cm-2 s-1 Å-1 |
| Δ vD | 74 ± 3 | 69 ± 5 | km s-1 | |
| a damp | 0.09 ± 0.02 | 0.10 |
||
| γ ∗ | 7.4 ± 1.6 | 8.2 |
km s-1 | |
| FLyα(Earth) | 2.05 × 10-13 | 2.01 × 10-13 | erg cm-2 s-1 | |
| FLyα(1 au) | 0.90 | 0.88 | erg cm-2 s-1 | |
Notes. The line could not be reconstructed in Visit 1 due to the lack of reference spectrum. FLyα is the flux integrated in the entire Lyman-α line and calculated at Earth distance and at 1 au from the star.
An anomalous low-flux pixel at about 1206.0 Å was removed from the fit (see Fig. 1).
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