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Table 4

Derived H2 densities and column densities for H13CO+ and HN13C for each component observed towards the outflows.

C1 C2 C3
Outflow Molecule n(H2) (cm-3) N (cm-2) n(H2) (cm-3) N (cm-2) n(H2) (cm-3) N (cm-2)

NGC 1333 H13CO+ 8.3 × 106 8.8 × 1011 5.8 × 105 9.3 × 1011
HN13C  ≤4.4 × 106 5.1 × 1011  ≤2.9 × 106 7.9 × 1011
L1448-IRS3 H13CO+ 1.5 × 106 9.5 × 1011 1.7 × 106 2.4 × 1012 3.1 × 106 8.2 × 1011
HN13C  ≤6.7 × 106 3.5 × 1011  ≤1.2 × 106 1.9 × 1012  ≤5.3 × 106 4.3 × 1011
VLA 1623 H13CO+ 1.0 × 106 6.2 × 1011 5.9 × 105 2.8 × 1012
HN13C ... ...  ≤3.7 × 106 9.6 × 1011
IRAS 20353 H13CO+ 9.4 × 105 7.3 × 1011  ≤1.1 × 107 9.1 × 1010
HN13C  ≤5.1 × 106 7.3 × 1011  ≤1.5 × 108 2.3 × 1011

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