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Table 7
Expected solid CO2 (upper limits) formed after cosmic ion irradiation of CH3OH ice based on laboratory data (Ioppolo et al. 2009) for some selected sources for which CH3OH column density is known compared to the column density of CO2 formed from methanol as obtained by the fit.
| Source | CO2 from CH3OH + 30 keV He+ | |
|
|
||
| Expected CO2 column density (mol cm-2) | Obtained CO2 column density (fit) (mol cm-2) | |
| R Cr A IRS 5 | 5.66 × 1017 | 3.79 × 1017 |
| HH 46 IRS 1 (IRAS 08242 -5050) | 1.01 × 1018 | 8.18 × 1017 |
| EC 90 (CK 1, SVS 20) | 2.83 × 1017 | 2.22 × 1017 |
| L 1489 IRS (IRAS 04016 +2610) | 4.96 × 1017 | 4.38 × 1017 |
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