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Table 1
Boundary conditions for oxygen and sulfur species at the upper (for fluxes) and lower (for CO) boundaries of our three models.
| Source | Model | H2O Flux | O(3P) Flux | CO mole fraction | H2S Flux (a) | OCS Flux (a) | CS2 Flux (a) |
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| Micrometeorites ablation | A1 | 5.2 × 105 | 1.6 × 106 | 5.1 × 10-5 | 1.5 × 10-2 | 4 × 10-3 | 2 × 10-3 |
| A2 | 2.6 × 106 | 0 | 5.1 × 10-5 | 1.5 × 10-2 | 4 × 10-3 | 2 × 10-3 | |
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| Enceladus | B | 6.5 × 105 | 1.6 × 106 | 5.1 × 10-5 | 10-5 | 0 | 0 |
Notes. Fluxes are expressed in cm-2 s-1 and referred to the surface. The peak for the production of H2O by micrometeorite ablation occurs around an altitude of 750 km. (a) relative to the H2O flux.
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