Table 1
The stellar and planetary parameters for M dwarf and G dwarf star systems and the interferometer parameters.
| Symbols | M dwarf(a) | G dwarf | Description |
|---|---|---|---|
| Star-planet parameters | |||
| d | 10 pc | 10 pc | Target distance |
| θp | 4.03 mas | 100 mas | Planet-star separation |
| Rp | 1 R⊕ | 1 R⊕ | Planet radius |
| Tp | 288 K | 288 K | Planet surface temperature |
| Rs | 0.15 R⊙ | 1.0 R⊙ | Stellar radius |
| θs | 0.069 mas | 0.46 mas | Angular radius of star |
| Ts | 2992 K | 5773 K | Stellar effective temperature |
| Interferometer parameters (7–12 µm) | |||
| D | 4m | 4m | Telescope diameter |
| L | 131 m | 5.5 m | Half of the baseline |
| L10 µm | 140.40 m | 5.56 m | Calculated L at 10 µm(b) |
| texp | 5000 s | 20000 s | Total exposure time |
| ηQE | 0.5 | 0.5 | Quantum efficiency |
| ηt | 0.02 | 0.02 | Instrument throughput(c) |
Notes. (a) The parameters of Proxima are adopted to represent M dwarfs (Kervella et al. 2017).(b) L10 µm represents the half length of baseline with a maximum planet signals at 10 µm, while L represents the half length of baseline with maximum planet signals in the band of 7–12 µm, which depends on the spectrum of planet, and slightly smaller than L10 µm. L is adopted in our simulations. (c) The total efficiency of the telescope is 0.01, determined by the product of the quantum efficiency and the instrument throughput. The integrated flux is proportional to the product of the exposure time and the total efficiency of the telescope.
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