Table 2
Rotational broadening, vrefl, of different systems, calculated using Eqs. (4), (5), and (6).
| Scenario A (*) | Scenario B (†) | Scenario C (§) | |
|---|---|---|---|
| (Proxima) | |||
| R⋆ (R⊙) | 0.154 | 0.25 | 0.5 |
| M⋆ (M⊙) | 0.122 | 0.2 | 0.5 |
| T⋆ (K) | 3042 | 3200 | 3900 |
| Prot,⋆ (days) | 82.6 | 1.0 | 5.0 |
| Rp (R⊕) | 1.08 | 1.0 | 1.0 |
| Mp (M⊕) | 1.27 | 1.0 | 1.0 |
| a (AU) | 0.0485 | 0.08 | 0.23 |
| Porb (days) | 11.2 | 17.4 | 56.4 |
| vrefl (km s−1) | 0.6 | 11.9 | 5.9 |
Notes. (*)Scenario A represents the star Proxima Centauri and the exoplanet Proxima Centauri b. The radius estimate of 1.08 R⊕ is taken from the NASA Exoplanet Archive. (†)Scenario B representsan Earth-like exoplanet in the habitable zone, orbiting a mid-sized M-dwarf with TRAPPIST-1-like rotation period. (§)Scenario C represents an Earth-like exoplanet in the habitable zone, orbiting a large, relatively fast-rotating M-dwarf.
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