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Table 3
Maximum water content of TRAPPIST-1 b, c, and d, depending on the assumed core composition.
| Core composition | Maximum H2O mass fraction | ||
|---|---|---|---|
| T-1b | T-1c | T-1d | |
| Pure silicate (MgSiO3) | 0.4% | 0.01% | 0.01% |
| Terrestrial | 2% | 0.3% | 0.08% |
| Pure iron | >10% | >10% | 2% |
Notes. Maximum water mass fractions were obtained by finding the corresponding mass-radius relationships that pass just above the 95% confidence ellipses from Grimm et al. (2018).
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