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Table 2

Best-fit model parameters.

MM1 II MM2 I MM3 I

vLSR (km s−1) [−6.7] [−9.0] [−9.0]
FWHM (km s−1) [3] [3.5] [3]
θs (′′) [1] [1] [1]
Tex Ns Tex Ns Tex Ns
(K) (cm−2) (K) (cm−2) (K) (cm−2)

CH2NH [215] ≤5.2 × 1016 [165] ≤5.0 × 1016 [120] ≤1015
CH3NH2 340 ± 60 (2.7 ± 0.4) × 1017 230 ± 30 (6.2 ± 0.9) × 1016 220 ± 30 (3.0 ± 0.6) × 1015
13CH3CN 70 ± 10 (3.4 ± 1.0) × 1015 80 ± 25 (1.4 ± 0.5) × 1015 90 ± 15 (9.0 ± 0.8) × 1013
CH3C15N 110 ± 50 (3.3 ± 0.5) × 1014 [80] (1.8 ± 0.4) × 1014 70 ± 45 (2.3 ± 0.7) × 1013
NH2CHO [215] (7.0 ± 1.7) × 1015 [165] (7.6 ± 0.8) × 1015 [120] ≤5.0 × 1013
NHCHOa [215] ≤2.0 × 1015 [165] ≤5.0 × 1014

Notes. Values in square brackets are fixed. Excitation temperatures for CH3NH2 and CH3CN are the values of the best-fit respective models while Tex for CH2NH and NH2CHO is fixed at the best-fit model value derived for CH3OH (Bøgelund et al. 2018). In the MM2 region, the excitation temperature for CH3 C15N is not well constrained and is therefore adopted from 13 CH3CN. Listed uncertainties are the standard deviation of models with χ2 within 1σ of the best-fit model.

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