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Table 2
Observed and estimated parameters of the HI superbubble.
| Shell centre | RA: 18h 57m 22s |
| Dec = 2° 43′ 13.′′6 | |
| Size (semi-axis) | 46′ × 27′ |
| Central velocity | 91 km s−1 |
| Expansion velocity (vexp) | 10 km s−1 |
| HI column density (NHI) | 1.6 × 1020 cm−2 |
| Swept mass (Ms) | 1.6 × 104 M⊙ |
| Original density (n0) | 7.5 cm−3 |
| Kinetic energy (Ek) | 1.6 × 1049 erg |
| Dynamical age (tdyn) | 3.3 Myr |
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