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Table 2
SNR values for emission spectra of a 3g super-Earth at 10 pca.
| Stellar type | Molecule | λ/μm | R = 5 | R = 20 | R = 500 | R = 2000 |
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| Sun | CH4 | 3.3 | 1.4 × 10-4 | 5.2 × 10-5 | 9.0 × 10-6 | 4.1 × 10-6 |
| CO2 | 4.3 | 2.0 × 10-3 | 1.6 × 10-4 | 3.6 × 10-5 | 1.7 × 10-5 | |
| CH4 | 7.7 | 1.2 × 10-1 | 5.5 × 10-2 | 9.7 × 10-3 | 5.8 × 10-3 | |
| O3 | 9.6 | 3.7 × 10-1 | 1.4 × 10-1 | 2.8 × 10-2 | 1.3 × 10-3 | |
| CO2 | 15.0 | 6.2 × 10-1 | 2.6 × 10-1 | 5.8 × 10-2 | 2.8 × 10-2 | |
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| AD Leo | CH4 | 3.3 | 1.4 × 10-4 | 2.4 × 10-5 | 6.7 × 10-6 | 2.7 × 10-6 |
| CO2 | 4.3 | 3.3 × 10-3 | 2.3 × 10-4 | 3.1 × 10-5 | 1.5 × 10-5 | |
| CH4 | 7.7 | 1.3 × 10-1 | 4.4 × 10-2 | 6.9 × 10-3 | 3.7 × 10-3 | |
| O3 | 9.6 | 6.9 × 10-1 | 2.5 × 10-1 | 5.0 × 10-2 | 2.4 × 10-2 | |
| CO2 | 15.0 | 1.12 | 4.3 × 10-1 | 8.3 × 10-2 | 4.2 × 10-2 | |
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| M0 | CH4 | 3.3 | 1.8 × 10-4 | 4.7 × 10-5 | 9.4 × 10-6 | 4.3 × 10-6 |
| CO2 | 4.3 | 2.8 × 10-3 | 9.1 × 10-5 | 1.1 × 10-5 | 5.7 × 10-6 | |
| CH4 | 7.7 | 1.3 × 10-1 | 4.3 × 10-2 | 5.3 × 10-3 | 3.2 × 10-3 | |
| O3 | 9.6 | 5.5 × 10-1 | 2.1 × 10-1 | 4.3 × 10-2 | 2.0 × 10-2 | |
| CO2 | 15.0 | 8.0 × 10-1 | 2.8 × 10-1 | 5.4 × 10-2 | 2.7 × 10-2 | |
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| M5 | CH4 | 3.3 | 3.5 × 10-4 | 1.8 × 10-4 | 3.1 × 10-5 | 1.4 × 10-5 |
| CO2 | 4.3 | 6.4 × 10-3 | 3.6 × 10-3 | 7.9 × 10-4 | 3.8 × 10-4 | |
| CH4 | 7.7 | 3.9 × 10-1 | 2.2 × 10-1 | 4.7 × 10-2 | 2.4 × 10-2 | |
| O3 | 9.6 | 9.2 × 10-1 | 4.9 × 10-1 | 9.8 × 10-2 | 4.9 × 10-2 | |
| CO2 | 15.0 | 2.57 | 1.35 | 2.8 × 10-1 | 1.4 × 10-1 | |
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