Table 3
Parameters used to model the passage of the shock (Sect. 4).
| Physical parameters of the shocked gas | ||
|---|---|---|
| Parameter | L1157-B1 value | Range |
 (cm−3) |
4 × 105 | 2–8 ×105 |
| T (K) | 90 | 50–150 |
| tsHock (yr) | 1600 | 200–3000 |
| ζCR (s−1) | 6 × 10−16 | 3–12 ×10−16 |
| Abundances (wrt H) of the injected species | ||
| Species | L1157-B1 value | Range |
| H2O | 2 × 10−4 | 1–4 × 10−4 |
| CO2 | 3 × 10−5 | 1.5–6 × 10−5 |
| CH3OH | 4 × 10−6 | 2–8 × 10−6 |
| NH3 | 2 × 10−5 | 1–4 × 10−5 |
| H2CO | 1 × 10−6 | 0.5–2 × 10−6 |
| OCS | 2 × 10−6 | 1–4 × 10−6 |
| SiO | 1 × 10−6 | 0.5–2 × 10−6 |
| Si | 1 × 10−6 | 0.5–2 × 10−6 |
| CH3CH2 | 4 × 10−8 | 0–20 × 10−8 |
| CH3CH2OH | 6 × 10−8 | 0–40 × 10−8 |
| CH3CHO | 0 | 0–1 × 10−8 |
| NH2CHO | 0 | 0–1 × 10−9 |
Notes. The upper half table lists the adopted H2 density, 
, temperature, T, time since the shock passage, tsHock, and the cosmic-ray ionisation rate, ζCR, of the gas after the passage of the shock. The lower half of the table lists the adopted abundances of the species injected into the gas phase from the grain mantle after the passage of the shock. The values quoted in the central column are the results ofprevious modelling of the L1157-B1 shocked gas recently discussed in Tinacci et al. (2023) and Giani et al. (2023). Column 3 lists the range of each parameter used in the modelling to take into account the differences in B0 and B2.
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