Open Access
Table 1
Core composition of the TRAPPIST-1 planets.
| Planet | Excitation frequency (rad.s−1) | Surface temperature | Smallest core Fe, Si, S (%) | Earth-like core composition Fe, Si, S (%) | Intermediate Fe, Si, S (%) | Biggest core Fe, Si, S (%) |
|---|---|---|---|---|---|---|
| T-1b | 4.804 × 10−5 | 300 K | 92, 0, 0 | 90, 2, 0 | 58, 18, 16 | 36, 29, 27 |
| R=1.116 R⊕ | 4.804 × 10−5 | 600 K | 92, 0, 0 | 90, 2, 0 | 56, 19, 17 | 36, 29, 27 |
| M=1.374 M⊕ | 4.804 × 10−5 | 670 K | 92, 0, 0 | 90, 2, 0 | 58, 18, 16 | 36, 29, 27 |
| 4.804 × 10−5 | 800 K | 92, 0, 0 | 90, 2, 0 | 58, 18, 16 | 36, 29, 27 | |
| T-1c | 2.999 × 10−5 | 300 K | 92, 0, 0 | 90, 2, 0 | 58, 18, 16 | 36, 29, 27 |
| R=1.097 R⊕ | 2.999 × 10−5 | 600 K | 92, 0, 0 | 90, 2, 0 | 56, 19, 17 | 36, 29, 27 |
| M=1.308 R⊕ | 2.999 × 10−5 | 670 K | 92, 0, 0 | 90, 2, 0 | 58, 18, 16 | 36, 29, 27 |
| 2.999 × 10−5 | 800 K | 92, 0, 0 | 90, 2, 0 | 58, 18, 16 | 36, 29, 27 | |
| T-1d | 1.792 × 10−5 | 300 K | 92, 0, 0 | 90, 2, 0 | 60, 17, 15 | 36, 29, 27 |
| R=0.788 R⊕ | 1.792 × 10−5 | 600 K | 92, 0, 0 | 90, 2, 0 | 60, 17, 15 | 36, 29, 27 |
| M=0.388 R⊕ | 1.792 × 10−5 | 650 K | 92, 0, 0 | 90, 2, 0 | 60, 17, 15 | 36, 29, 27 |
| 1.792 × 10−5 | 800 K | 92, 0, 0 | 90, 2, 0 | 60, 17, 15 | 36, 29, 27 | |
| T-1e | 1.191 × 10−5 | 300 K | 92, 0, 0 | 90, 2, 0 | 60, 17, 15 | 36, 29, 27 |
| R=0.920 R⊕ | 1.191 × 10−5 | 600 K | 92, 0, 0 | 90, 2, 0 | 60, 17, 15 | 36, 29, 27 |
| M=0.692 R⊕ | 1.191 × 10−5 | 800 K | 92, 0, 0 | 90, 2, 0 | 60, 17, 15 | 36, 29, 27 |
| T-1f | 7.888 × 10−6 | 250 K | 92, 0, 0 | 90, 2, 0 | 58, 18, 16 | 36, 29, 27 |
| R=1.045 R⊕ | 7.888 × 10−6 | 300 K | 92, 0, 0 | 90, 2, 0 | 58, 18, 16 | 36, 29, 27 |
| M=1.039 R⊕ | 7.888 × 10−6 | 600 K | 92, 0, 0 | 90, 2, 0 | 58, 18, 16 | 36, 29, 27 |
| 7.888 × 10−6 | 800 K | 92, 0, 0 | 90, 2, 0 | 58, 18, 16 | 36, 29, 27 | |
| T-1g | 5.878 × 10−6 | 210 K | 92, 0, 0 | 90, 2, 0 | 58, 18, 16 | 36, 29, 27 |
| R=1.129 R⊕ | 5.878 × 10−6 | 300 K | 92, 0, 0 | 90, 2, 0 | 58, 18, 16 | 36, 29, 27 |
| M=1.321 R⊕ | 5.878 × 10−6 | 600 K | 92, 0, 0 | 90, 2, 0 | 58, 18, 16 | 36, 29, 27 |
| 5.878 × 10−6 | 800 K | 92, 0, 0 | 90, 2, 0 | 58, 18, 16 | 36, 29, 27 | |
| T-1h | 3.869 × 10−6 | 170 K | 92, 0, 0 | 90, 2, 0 | 60, 17, 15 | 36, 29, 27 |
| R=0.755 R⊕ | 3.869 × 10−6 | 300 K | 92, 0, 0 | 90, 2, 0 | 60, 17, 15 | 36, 29, 27 |
| M=0.326 R⊕ | 3.869 × 10−6 | 600 K | 92, 0, 0 | 90, 2, 0 | 60, 17, 15 | 36, 29, 27 |
| 3.869 × 10−6 | 800 K | 92, 0, 0 | 90, 2, 0 | 60, 17, 15 | 36, 29, 27 |
Notes. Radii and masses come from Agol et al. (2021). The percentage of iron, silicium, and sulphur in the core is given.
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