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Table 4
Line parameters and fitting results for the NE absorption component.
| Species | V0 | ΔV | ∫τdV | NLTE |  / |
|
| (km s-1) | (km s-1) | (10-3 km s-1) | (1012 cm-2) | |||
|
|
||||||
| HCO+ | −148.1 (0.1) | 21.5 (0.1) | 2897.0 (15.0) | 7.5 (0.0) | 23.4 (0.1) | |
| HCN | −147.5 (0.1) | 22.2 (0.2) | 1656.0 (14.0) | 7.3 (0.1) | 41.5 (0.4) | |
| HNC | −147.0 (0.5) | 15.0 (1.0) | 284.0 (14.0) | 1.2 (0.1) | 87.2 (4.3) | |
| C2H | −148.1 (0.5) | 15.0 (0.0) | 429.0 (9.0) | 29.2 (0.6) | 42.7 (0.9) | |
| c-C3H2(o) | −147.5 (1.4) | 16.0 (3.4) | 84.0 (18.0) | 0.8 (0.2) | 47.9 (10.3) | |
| c-C3H2(p) | −147.5 (1.4) | 16.0 (3.4) | 38.0 (11.0) | 0.4 (0.1) | 31.9 (9.2) | |
| H2CO(p) | −146.7 (0.7) | 15.4 (1.7) | 107.0 (10.0) | 1.1 (0.1) | 56.6 (5.3) | |
| N2H+ | −147.0 (0.0) | 20.0 (0.0) | 105.0 (0.0) | −0.3 (0.0) | −69.9 (0.0) | |
| H13CO+ | −147.0 (0.0) | 20.0 (0.0) | 39.0 (0.0) | −0.1 (0.0) | −78.9 (0.0) | |
| H13CN | −147.0 (0.0) | 20.0 (0.0) | 38.1 (0.0) | −0.2 (0.0) | −47.8 (0.0) | |
Notes. Negative values (except for velocities) represent either the (3σ) upper (for NLTE) or lower (for [SW]/[NE]) limits.
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