Open Access
Table A.1
Binding energies, prefactors, and initial abundances (with respect to H) assumed for the species considered in this work and the resulting snowlines around 0.1 and 1.0 M⊙ stars (defined as the locations where the gas and ice abundances are equal at t = 0).
| Species | ν / s−1 | Ebind/K | Abundance | Snowline/au |
|---|---|---|---|---|
| Ha | 1.54 × 1011 | 450 | − | |
| OHa | 3.76 × 1015 | 5698 | − | |
| CO | 4.1 × 1013 | 910 | 1.2 × 10−4 | 13/25 |
| O2 | 1.3 × 1014 | 1030 | 0.85 × 10−4 | 12/21 |
| CH4 | 2.5 × 1014 | 1140 | 2.3 × 10−6 | 8.4/16 |
| C2H4 | 4 × 1015 | 2200 | − | 2.4/4.4 |
| C2H6 | 6 × 1016 | 2600 | − | 1.9/3.5 |
| C2H2 | 3 × 1016 | 2800 | − | 1.6/2.8 |
| CO2 | 1.1 × 1015 | 2980 | 2.1 × 10−5 | 1.1/2.1 |
| CH3OH | 5.0 × 1014 | 4850 | 2.3 × 10−6 | 0.37/0.62 |
| H2O | 1.3 × 1018 | 6722 | 1.1 × 10−4 | 0.23/0.45 |
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