Open Access
Table 3
S/N values to detect an atmosphere assuming Cycle 1 observations and number of transits to achieve a 5 σ detection.
| Case | S/N Cycle 1 transits | Number of transits at 5 σ | Instrument | ||||
|---|---|---|---|---|---|---|---|
| T1b 0.1 bar CO2 | 2.9 | 7 | NIRISS | ||||
| T1b 1 bar CO2 | 5.1 | 2 | NIRISS | ||||
| T1b 10 bar CO2 | 4.7 | 3 | NIRISS | ||||
| T1b 1 bar H2O | 19.2 | 1 | NIRISS | ||||
| T1b 3 bar H2O | 21.3 | 1 | NIRISS | ||||
| T1b 10 bar H2O | 36.8 | 1 | NIRISS | ||||
| T1c 0.1 bar CO2 | 1.8 | 15 | NIRISS | ||||
| T1c 0.1 bar CO2 | 2.8 | 13 | NIRSpec | ||||
| T1c 1 bar CO2 | 3.3 | 5 | NIRISS | ||||
| T1c 1 bar CO2 | 4.6 | 5 | NIRSpec | ||||
| T1c 10 bar CO2 | 2.4 | 9 | NIRISS | ||||
| T1c 10 bar CO2 | 3.5 | 9 | NIRSpec | ||||
| T1c 10 bar H2O | 14.9 | 1 | NIRISS | ||||
| T1c 10 bar H2O | 17.4 | 1 | NIRSpec | ||||
| T1d 0.1 bar CO2 | 3.4 | 5 | NIRSpec | ||||
| T1d 1 bar CO2 | 5.4 | 2 | NIRSpec | ||||
| T1d 10 bar CO2 | 4.4 | 3 | NIRSpec | ||||
| T1d 10 bar H2O | 4.5 | 3 | NIRSpec | ||||
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