Table 2
Number densities for all species and all considered temperature ranges.
| Species | Number density relative to hydrogen |
|---|---|
| 1316–1354K | |
| Mg2SiO4 (solid) | min( ,SiO, ) |
| SiO (gas) | min(Si/H,O/H − CO − 2CO2) − Mg2SiO4 |
| Mg (gas) | Mg − 2Mg2SiO4 |
| H2O (gas) | O/H − 2CO2 − CO − 3Mg2SiO4 |
| 710–1316 K | |
| MgSiO3 (solid) | min(2Mg2SiO4,2SiO,2H2O) |
| SiO2 (solid) | min(SiO,H2O) |
| Mg2SiO4 (solid) |  |
| SiO (gas) |  |
| H2O (gas) |  |
| 480–710 K | |
| FeS (solid) | min(Fe,H2S) |
| Fe (solid) | −= FeS |
| H2S (gas) | −= FeS |
| 370–480K | |
| Fe2SiO4 (solid) | min(Fe/2, , ) |
| Mg2SiO4 (solid) | += Fe2SiO4 |
| MgSiO3 (solid) | −= 2Fe2SiO4 |
| Fe (solid) | −= 2Fe2SiO4 |
| H2O (gas) | −= 2Fe2SiO4 |
| <370K | |
| Fe3O4 (solid) | min( , ) |
| H2O (condensation at 180 K) | −= 4Fe3O4 |
| Fe (solid) | −= 3Fe3O4 |
Notes. We make use of −= and += in order to show change compared to the previous, hotter temperature bracket. Any species not shown compared to the hotter temperature bracket remains unchanged. We set the water abundance available for forsterite condensation to be equal to all the oxygen not present in carbon volatiles or SiO. The initial SiO number density available for forsterite condensation is set to the minimum between silicon and the oxygen not trapped in carbon volatiles.
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