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This article has an erratum: [https://doi.org/10.1051/0004-6361/202142147e]

Table 3

Values of column density obtained using CASSIS for H13CN and HC15N along with results of analysis using CASSIS for 14N/15N in HCN.

Region NTOT 14N/15N
[cm−2]
H13CN HC15N
E region (1.9–2.3) × 1013 (1.7–2.1) × 1012 452–676
NW region (2.9–4.3) × 1013 (5.3–6.5) × 1012 273–406
NE region (2.6–3.2) × 1013 (5.4–6.6) × 1012 197–296
S region (2.4–3.0) × 1013 (3.9–4.9) × 1012 245-385
FIR3 (1.9–2.4) × 1013 (5.0–6.3) × 1012 151–240

Notes. The values were calculated using average values of column densities taken at 35 and 45 K (100 and 150 K for FIR3).

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