Table 3
Column density (Nmol) and gas kinetic temperature (TKIN) estimates for the adopted volume density (
) at the central position of core using RADEX.
| Species | Core | TKIN (a) |  (106) |
N(mol)(a) | ΔVth (b) |
|---|---|---|---|---|---|
| (K) | (cm−3) | (1013 cm−2) | (km s−1) | ||
| H2D+ | L1544 | 9/7 | 2.0 | 2/3.2 | 0.32/0.28 |
| L183 | 8/7 | 2.0 | 1.4/2.5 | 0.30/0.28 | |
| L694-2 | 9/7 | 0.9 | 0.8/3.2 | 0.32/0.28 | |
| L1517B | 6/9.5 | 0.2 | 0.4/0.4 | 0.26/0.33 | |
| L1521f | 6/9.3 | 1.1 | 0.5/0.7 | 0.26/0.33 | |
| N2H+ | L1544 | 5 | 2.0 | 0.8 | 0.09 |
| L1521f | 8 | 1.1 | 0.9 | 0.11 | |
Notes. The volume density for each core is adopted by Caselli et al. (2008). (a) The first values of TKIN and N(mol) refer to this work followed by the values reported in Caselli et al. (2008) for direct comparison. (b) The thermal broadening is computed based on TKIN. Accounting for kinetic temperatures within a range of 5–12 K, the reported column densities can vary by up to ~60-80%.
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