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Table 7
Electron densities based on [Fe ii] line ratios (uncorrected for extinction) measured in a 0.5″ × 0.5″ aperture centred on each source.
| Source | [Fe ii] ratio | ne | [Fe ii] ratio | ne | [Fe ii] ratio | ne | [Fe ii] ratio | ne |
| 1.533/1.644 | (cm-3) | 1.600/1.644 | (cm-3) | 1.664/1.644 | (cm-3) | 1.677/1.644 | (cm-3) | |
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| HH 34-IRS | 0.24 ± 0.02 | ≥ 3 × 104 | 0.22 ± 0.01 | ~3 × 104 | 0.15 ± 0.01 | ~1 × 105 | 0.29 ± 0.02 | ≥ 1 × 105 |
| HH 300-IRS | 0.25 ± 0.06 | ≥ 3 × 104 | 0.23 ± 0.03 | ~3 × 104 | 0.16 ± 0.09 | ~1 × 105 | 0.68 ± 0.13 | ≥ 1 × 105 |
| SVS 13 | 0.67 ± 0.21 | ? | < 0.57 | ? | < 0.3 | ? | < 0.3 | ≤ 1 × 105 |
| HH 72-IRS | 0.20 ± 0.01 | ~1 × 104 | 0.25 ± 0.02 | ≥ 4 × 104 | 0.18 ± 0.01 | ≥ 1 × 105 | 0.33 ± 0.04 | ≥ 1 × 105 |
| HH 999-IRS | 0.10 ± 0.03 | ~1 × 103 | 0.30 ± 0.12 | ≥ 1 × 105 | < 1.0 | ? | < 0.12 | ≤ 1 × 104 |
| HH 26-IRS | < 0.23 | ≤ 2 × 104 | < 1.0 | ? | < 0.3 | ? | < 0.3 | ≤ 1 × 105 |
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