Table 2
Distribution of the elements into molecules within the modelled disc.
| Molecule | Tcond (K) | Volume mixing ratio |
|---|---|---|
| CO | 20 | 0.2 × C/H |
| CH4 | 30 | 0.1 × C/H |
| CO2 | 70 | 0.1 × C/H |
| H2O | 150 | O/H - (CO/H + 2 × CO2/H + 4 × Mg2SiO4/H +3 × MgSiO3/H) |
| C | 631 | 0.6 × C/H |
| Mg2SiO4 | 1354 | Mg/H - Si/H |
| MgSiO3 | 1500 | Mg/H - 2 × (Mg/H - Si/H) |
| Fe | 1357 | Fe/H |
Notes. The volume mixing ratios of the species are based on the works of Madhusudhan et al. (2014), Bitsch & Battistini (2020), and Schneider & Bitsch (2021), and their condensation temperatures are from Lodders (2003). The used methane fraction corresponds roughly to observations (Gibb et al. 2004; Mumma & Charnley 2011).
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