Table E.2
Weeds parameters used for COMs at N1S-1.
| Moleculea | Sizeb (″) | Trot,W c (K) | Trot,obs d (K) | NWe (cm−2) | Nobsf (cm−2) | Cvib g | ∆v h (km s−1) | voff i (km s−1) | |
|---|---|---|---|---|---|---|---|---|---|
| CH3OH, v = 0 | 2.0 | 250 | 262 ± 10 | 2.5(19) | (1.5 ± 0.2)(19) | 1.00 | 6.0 | 0.0 | |
| v = 1 | 2.0 | 250 | 262 ± 10 | .5(19) | (1.5 ± 0.2)(19) | 1.00 | 6.0 | 0.0 | |
| v = 2 | 2.0 | 250 | 262 ± 10 | 2.5(19) | (1.5 ± 0.2)(19) | 1.00 | 6.0 | 0.0 | |
| 13CH3OH, v = 0 | 2.0 | 250 | 262 ± 27 | 1.0(18) | (8.8 ± 2.1)(17) | 1.00 | 6.0 | 0.5 | |
| C2H5OH, v = 0 | 2.0 | 300 | 301 ± 15 | 2.5(18) | (2.0 ± 0.2)(18) | 2.88 | 6.3 | 0.3 | |
| CH3OCH3, v = 0 | 2.0 | 254 | 254 ± 17 | 2.3(18) | (1.4 ± 0.3)(18) | 1.16 | 4.5 | 1.5 | |
| CH3OCHO, v = 0 | 2.0 | 320 | 317 ± 35 | 3.1(18) | (2.2 ± 0.4)(18) | 2.62 | 5.0 | 0.5 | |
| v = 1 | 2.0 | 320 | 317 ± 35 | 3.1(18) | (2.2 ± 0.4)(18) | 2.62 | 5.0 | 0.5 | |
| CH3CHO, v = 0 | 2.0 | 280 | 277 ± 8 | 1.6(18) | (5.5 ± 0.4)(17) | 1.13 | 6.0 | 0.0 | |
| v = 1 | 2.0 | 280 | 277 ± 8 | 1.6(18) | (5.5 ± 0.4)(17) | 1.13 | 6.0 | 0.0 | |
| CH3NCO, v = 0 | 2.0 | 150 | 139 ± 7 | 3.1(17) | (1.2 ± 0.2)(17) | 1.00 | 5.5 | −0.2 | |
| C2H5CN, v = 0 | 2.0 | 230 | 231 ± 5 | 5.1(18) | (3.1 ± 0.2)(18) | 2.21 | 6.8 | −0.7 | |
| v12 = 1 | 2.0 | 230 | 231 ± 5 | 5.1(18) | (3.1 ± 0.2)(18) | 2.21 | 6.8 | −0.7 | |
| v13 = 2 | 2.0 | 230 | 231 ± 5 | 5.1(18) | (3.1 ± 0.2)(18) | 2.21 | 6.8 | −0.7 | |
| v20= 1 | 2.0 | 230 | 231 ± 5 | 5.1(18) | (3.1 ± 0.2)(18) | 2.21 | 6.8 | −0.7 | |
| v21 = 2 | 2.0 | 230 | 231 ± 5 | 5.1(18) | (3.1 ± 0.2)(18) | 2.21 | 6.8 | −0.7 | |
| C2H3CN, v = 0 | 2.0 | 300 | 299 ± 15 | 3.0(18) | (2.6 ± 0.3)(18) | 1.20 | 6.0 | −0.5 | |
| v11 = 1 | 2.0 | 300 | 299 ± 15 | 3.0(18) | (2.6 ± 0.3)(18) | 1.20 | 6.0 | −0.5 | |
| v15 = 1 | 2.0 | 300 | 299 ± 15 | 3.0(18) | (2.6 ± 0.3)(18) | 1.20 | 6.0 | −0.5 | |
| NH2CHO, v = 0 | 2.0 | 170 | 166 ± 5 | 4.1(18) | (3.2 ± 0.3)(18) | 1.10 | 5.3 | 0.1 | |
| v12 = 1 | 2.0 | 170 | 166 ± 5 | 4.1(18) | (3.2 ± 0.3)(18) | 1.10 | 5.3 | 0.1 | |
Notes. (a)COMs and vibrational states used to derive population diagrams. (b)Size of the emitting region. (c)Rotation temperature used for the Weeds model. (d)Rotation temperature derived from the population diagram. (e)Column density used for the Weeds model. (f)Column density derived from the population diagram. (g)Vibrational state correction applied when the partition function does not account for higher-excited vibrational states, where Cvib = Cvib(Trot, obs).(h) FWHM of the transitions. (i) Offset from the source systemic velocity, which was set to 62 km s−1. Values in parentheses show the decimal power, where x(z) = x × 10z or (x ± y)(z) = (x ± y) × 10z.
Upper limits on NW indicate that a population diagram could not be derived, either because too many transitions are contaminated or the molecule is not detected. The temperatures used for the Weeds model at these positions are determined by extrapolating the temperature profile of the respective molecule that was derived in Sect. 3.4.
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