Open Access
Table 3
Model parameters used to reproduce the NaCl observations of OH 231.8+4.2 (Sect. 5.2).
| Parameter | value |
|---|---|
| Distance (d) | 1500 pc |
| LSR Systemic velocity (Vsys) | +35 km s−1 |
| Inclination (i) | 32.5° |
| Radius of the tori (Rt) | 5 × 1014 cm |
| Height of the tori (Ht) | 3.5 × 1014 cm |
| Semi-major axis of the tori’s elliptical cross section (at) | 2.5 × 1014 cm |
| Semi-minor axis of the tori’s elliptical cross section (ht) | 5 × 1013 cm |
| Keplerian rotation (Vrot) |  |
| Equatorial expansion (Vexp) | 3.5 × (ra/40au)km s−1 |
| Turbulent velocity (Vturb) | 2 km s−1 |
Molecular hydrogen density ( ) |
 |
| Gas kinetic temperature (Tkin) |  |
| NaCl-to-H2 abundance (X(NaCl)) | 5 × 10−9 |
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