Table 1
Possible values of the mass ratios between CO and solids and between H2O and CO.
| Hypothesis | Possible ranges | Resulting values | Reference |
|---|---|---|---|
| Hypothesis 1 | 10–4 ≲ fCO,gas ≲ 10–3 | 10–4 ≲ MCO/Msolid ≲ 0.5 | (1) |
| 1 ≲ fGtoS ≲ 5 × 102 | 2 × 10–6 ≲  ≲ 10–2 |
||
| Hypothesis 2 | 4 × 10–3 ≲ fCO,ice ≲ 0.3 | 2 × 10–5 ≲ MCO/MSolid ≲ 9 × 10–2 | (2) |
| 5 × 10–3 ≲ fitoR ≲ 0.3 | 10–4 ≲  ≲ 0.5 |
||
Notes. (1) The range of fco,gas comes from Bolatto et al. (2013), Favre et al. (2013), France et al. (2014), and Cauley et al. (2021), while that of fGtoS is from Miotello et al. (2017). (2) The range of fCO,ice is motivated by Mumma & Charnley (2011) and Harrington Pinto et al. (2022), while that of fItoR is by Fulle et al. (2019) and Choukroun et al. (2020).
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