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Table 1
Photodesorption rates of pure N2, O2, and CO ice for different ISM environments.
| Environment | N2 | O2 | CO |
| molecules photon-1 | molecules photon-1 | molecules photon-1 | |
|
|
|||
| Edges of cloudsa | 2.6 × 10-3 | 3.3 × 10-3 | 1.3 × 10-2 |
| Prestellar coresb | 2.2 × 10-3 | 2.6 × 10-3 | 1.0 × 10-2 |
| Black body 10 000 K | 5.3 × 10-3 | 2.3 × 10-3 | 6.4 × 10-3 |
| TW Hydraec | 2.1 × 10-3 | 2.3 × 10-3 | 7.2 × 10-3 |
| Lyman-alpha | 1.5 × 10-3 | 2.1 × 10-3 | 4.2 × 10-3 |
Notes.
(a)
Using the ISRF from Mathis et al. (1983).
(b)
Using the spectrum calculated by Gredel et al. (1987).
(c)
Using the spectrum collected by Herczeg et al. (2002), Valenti et al. (2003), and Johns Krull & Herczeg (2007).
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