Table 2.
Summary of the relevant physical properties of the ionized outflow discovered in the I20210S optical spectrum and of the South Nebula.
| Quantity | Value |
Units | |
|---|---|---|---|
| Outflow | South Nebula | ||
| Te | 12 900 ± 3600 | ∼10 000 | K |
| ⟨ne⟩ | ≳5000 | ∼100 | cm−3 |
 |
(2.44 ± 0.74)×1042 | (9.05 ± 0.55)×1039 | erg s−1 |
| vmax | 2160 ± 380 | 1100 ± 430 | km s−1 |
| Rout | 2.20 ± 0.14 | 6.52 ± 0.43 | kpc |
| tdyn | 0.99 ± 0.27 | 5.8 ± 2.6 | Myr |
| Mout |
 |
∼3 × 104 | M⊙ |
| Ṁ |
 |
∼6 × 10−3 | M⊙ yr−1 |
| Ėkin |
 |
∼2 × 1039 | erg s−1 |
| Ṗout |
 |
∼4 × 1031 | erg cm−1 |
Notes. Upper section: quantities that are independent of the electron density. Lower section: quantities dependent on the electron density, for which a value of ⟨ne⟩ = 5000 cm−3 (Rose et al. 2018) is assumed in the case of the outflow. Note that the quoted errors of measurement are only indicative of the magnitude of the statistical uncertainties, not the systematics, affecting the computed values (see Sect. 5).
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