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Table 3
Column densities and nitrogen ratios obtained from the 13C isotopologues of HCN and HNC.
| H13CN | HC15N | HN13C | H15NC | HCN | HNC | |
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| Core | Ntot(Tex = 15 K) | Ntot(Tex = 15 K) | Ntot(Tex = 15 K) | Ntot(Tex = 15 K) | 14N/15N | 14N/15N |
| [×1012 cm-2] | [×1011 cm-2] | [×1011 cm-2] | [×1011 cm-2] | (Tex = 15 K) | (Tex = 15 K) | |
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| Cloud C | ||||||
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| C1 | 1.94 | ≤1.37 | 3.19 | 3.07 | ≥571 ± 65 | 418 ± 75 |
| C2 | 3.03 | 4.09 | 4.25 | 3.57 | 298 ± 52 | 478 ± 63 |
| C3 | 0.89 | ≤2.1 | 0.98 | ≤2.45 | ≥170 ± 64 | ≥161 ± 14 |
| C4 | 2.02 | 4.20 | 3.42 | 5.07 | 193 ± 30 | 271 ± 31 |
| C5 | 2.34 | 2.80 | 3.02 | 3.54 | 337 ± 89 | 342 ± 40 |
| C6 | 1.92 | 2.26 | 2.44 | 2.34 | 343 ± 83 | 420 ± 82 |
| C7 | – | – | – | – | – | - |
| C8 | 1.23 | ≤1.33 | 1.94 | 2.41 | ≥371 ± 60 | 325 ± 73 |
| C9 | 2.74 | 9.01 | 3.94 | 7.59 | 122 ± 20 | 209 ± 31 |
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| Cloud F | ||||||
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| F1 | 1.82 | ≤1.12 | 2.05 | 3.99 | ≥763 ± 82 | 240 ± 26 |
| F2 | 1.15 | ≤1.25 | 2.05 | 2.53 | ≥431 ± 63 | 378 ± 77 |
| F3 | 1.11 | 1.51 | 2.25 | 1.95 | 346 ± 80 | 541 ± 79 |
| F4 | 1.83 | 3.03 | 2.78 | 3.47 | 282 ± 60 | 374 ± 57 |
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| Cloud G | ||||||
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| G1 | 0.35 | 2.47 | 0.92 | ≤1.94 | 70 ± 28 | ≥237 ± 21 |
| G2 | ≤0.31 | ≤1.54 | 1.71 | 4.14 | – | 206 ± 31 |
| G3 | 0.63 | ≤1.72 | 1.74 | 3.65 | ≥181 ± 54 | 237 ± 36 |
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| Cloud H | ||||||
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| H1 | 0.98 | ≤1.39 | 1.91 | 4.09 | ≥353 ± 51 | 234 ± 20 |
| H2 | 0.97 | ≤1.32 | 1.90 | 3.11 | ≥366 ± 132 | 306 ± 40 |
| H3 | 1.84 | 2.00 | 2.19 | 2.24 | 458 ± 98 | 488 ± 68 |
| H4 | 0.86 | 3.03 | 1.86 | 2.86 | 142 ± 34 | 326 ± 44 |
| H5 | 1.13 | 1.44 | 1.96 | 2.96 | 395 ± 97 | 331 ± 36 |
| H6 | 0.94 | 2.18 | 2.71 | 4.56 | 216 ± 77 | 297 ± 62 |
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