Table 2
Model parameters used to reproduce the observations of MWC 922 (Sect. 4).
| Parameter | Value | Value |
|---|---|---|
| Distance (d) | 1700 pc | 3000 pc |
| LSR Systemic velocity (Vsys) | +33 km s−1 | – |
| Inclination (i) | 0° | – |
| Ionized disk semi-opening angle (θa) | 60° | – |
| Angular width of the ionized disk (θd) | 6.5° | – |
| Fast outflow semi-opening angle (θw) | 38° | – |
| Inner radius (Rin) | 29 au | 51.5 au |
| Radius of the disk’s inner edge (ionized) | 30 au | 53 au |
| Electron density (ne) | 4.3 exp(− (θa − θ)∕40°) cm−3 |
1.5 exp(− (θa − θ)∕40°) cm−3 |
| Electron temperature (Te) | 8750 K | 9000–11 000 |
| Slow outflow velocity (Vslow) | 9 km s−1 (radial expansion) | – |
| Fast outflow velocity (Vfast) | 95 km s−1 (radial expansion) | – |
| Keplerian rotation velocity (Vrot) | 36.4/ km s−1 |
48.5/ km s−1 |
| Central mass (Mc) | 10 M⊙ | 18 M⊙ |
| Mass-loss rate of the slow wind (Ṁslow) | 3 × 10−7 M⊙ yr−1 | 6 × 10−7 M⊙ yr−1 |
| Mass-loss rate of the fast wind (Ṁfast) | 2 × 10−6 M⊙ yr−1 | 4 × 10−6 M⊙ yr−1 |
| Ionized mass (Mion) | 2 × 10−5 M⊙ | 9 × 10−5M⊙ |
Notes. The geometry adopted is depicted in Fig. 6. The mass-loss rates given in the table represent the values at the inner radius of the disk (Rin). The value of the ionized mass is that in the modeled region, within ~150 au, adopting d = 1.7 kpc (~300 au, adopting d = 3 kpc). The departure coefficients bn used are from Storey & Hummer (1995).
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