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Table 5
14N/15N ratios derived from APEX observations of HCN and HNC isotopologues using a standard 12C/13C ratio of 69, except for the H13CN/HC15N(4−3) ratio of R CrA IRS7B, where the data are taken from the survey by Watanabe et al. (2012).
| Source |
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| IRAS 16293A | 163 ± 20 | 242 ± 32 | 190 ± 38 |
| R CrA IRS7B | 287 ± 36 | 259 ± 34 | (285 ± 139) |
| OMC-3 MMS6 | 366 ± 86 | 460 ± 65 | – |
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