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Table 4
Optical depths of individual components.
| Ice sample | Ratio | T (K) | τIRAS16253 | τB335 | τHOPS153 | τHOPS370 | τIRAS20126 |
|---|---|---|---|---|---|---|---|
| CO2:H2O | 1:10 | 10 | 0.31 | 0.41 | 0.62 | 0.10 | 0.09 |
| CO2:CH3OH | 1:10 | 10 | 0.06 | 0.22 | 0.26 | 0.07 | 0.14 |
| CO2:CO | 1:1 | 15 | 0.11 | 0.07 | 0.08 | 0.02 | 0.02 |
| CO2:CO | 1:2 | 25 | 0.10 | 0.06 | 0.10 | 0.07 | 0.04 |
| CO2 | Pure | 80 | 0.06 | 0.03 | 0.04 | 0.05 | 0.15 |
| CO2:H2O | 1:10 | 160 | – | – | – | 0.10 | 0.15 |
| CO2:CH3OH | 3:1 | 105 | – | – | – | 0.13 | 0.15 |
| CO2 | Pure | 80 | – | – | – | 0.06 | 0.12 |
Notes. Optical depths of individual components contributing to the final linear combination as discussed in Sect. 3.2. The bottom three rows provide optical depths for the alternative analysis of HOPS 370 and IRAS 20126.
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