Table 1
List of the seven models presented in Figs. 13 and 14.
| Model | CO/H2 abund. | Grain size | Collapse | ζ | H2 OPR | T chem a | Ageb |
| (μm) | (s-1) | (K) | (My) | ||||
|
|
|||||||
| 1 | 2 × 10-6 | 0.2 | fast | 1 × 10-17 | 3:1 | 7 | 0.46 |
| 2 | calculated | 0.3 | fast | 1 × 10-17 | 3:1 | free | 0.48 |
| 3 | 5 × 10-7 | 0.1 | fast | 1 × 10-17 | 3:1 | free | 0.52 |
| 4 | 2 × 10-6 | 0.1 | fastc | 1 × 10-17 | 3:1 | free | 0.62 |
| 5 | 2 × 10-6 | 0.1 | fast | 1.5 × 10-17 | 3:1 | free | 0.46 |
| 6 | 2 × 10-6 | 0.1 | fast | 1 × 10-17 | 1:2 | free | 0.46 |
| 7 | 2 × 10-6 | 0.1 | slow | 1 × 10-17 | 3:1 | free | 4.90 |
Notes.
The chemical network temperature follows the gas kinetic temperature (free) or is kept constant to the given value. See Sect. 5.3.2.
The age is not an input parameter of the model but one of the results: the time it took to the model to reach the observed peak central density.
Though still a fast-collapse case, the initial pressure has been reduced to 6 × 104 K cm-3, see Sect. 5.1.
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