Table 7
Transit of an Earth twin at 10 pc observed for 8 h by the E-ELT, at low spectral resolution and assuming no atmospheric perturbations.
| Filter | λ range | h | S/N | δ h± 1-σ |
| (Å) | (km) | error (km) | ||
|
|
||||
| O3 + Rayl. 1 | 5000–5500 | 19.9 | 11.3 | 17.2 ± 3.0 |
| O3 + Rayl. 2 | 5500–6100 | 19.2 | 12.3 | 16.5 ± 2.9 |
| O3 + Rayl. 3 | 6300–6800 | 15.0 | 8.6 | 12.3 ± 2.9 |
| O2-B | 6865–6905 | 17.6 | 2.5 | 14.8 ± 6.4 |
| Rayl. 4 | 7360–7560 | 8.9 | 3.1 | 6.2 ± 3.2 |
| O2-A | 7590–7650 | 23.2 | 3.7 | 20.5 ± 5.9 |
| Rayl. 5 | 7750–8100 | 7.2 | 3.3 | 4.5 ± 2.9 |
| Rayl. 6 | 8450–8800 | 5.3 | 2.3 | 2.6 ± 2.8 |
| Water vapour | 9300–9600 | 8.7 | 3.1 | 6.0 ± 3.2 |
| Window | 10 100–10 400 | 2.7 | 1.0 | 0 ± 2.6 |
Notes. The S/N is calculated through ten different filters. The last filter “Window” is for the atmospheric window. The filter widths range from 40 Å for the O2 B to 600 Å for one of the filter sampling the Chappuis band. The values of h are taken from the 10 Å bin of the UVES profile (Fig. 24). The value δh is the altitude difference to the atmospheric window measured by the E-ELT.
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