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Table A.3

CH3CN ν = 0 line parameters.

N 1 Quantum numbers: up-low2 ν (MHz) Eu (K)3 Aul (s-1)4 S ij 5 gu 6 W (K km s-1)7
1 12 11 11 11 220 235.047 923.4 1.469E-04 1.92 25 1.95(1.95)
2 12 10 11 10 220 323.643 774.0 2.813E-04 3.67 25 4.73(1.38) Blended with A-13CH33OH
3 12 8 11 8 220 475.814 517.6 5.125E-04 6.67 25 7.57(1.17)
4 12 7 11 7 220 539.328 410.6 6.091E-04 7.92 25 10.18(6.0)
5 12 4 11 4 220 679.287 175.1 8.223E-04 10.7 25 27.05(10.63)
6 12 2 11 2 220 730.259 89.4 9.000E-04 11.7 25 29.82(6.74)
7 12 1 11 1 220 743.008 68.0 9.195E-04 11.9 25 58.83(7.66)
7 12 0 11 0 220 747.259 68.9 9.259E-04 12.0 25
8 12 6 11 6 220 594.426 325.9 3.465E-04 9.00 50 19.37(6.83)
9 12 3 11 3 220 709.015 133.2 4.338E-04 11. 50 31.35(10.23)

Notes.Exponential notation: 1.469E-04 = 1.469 × 10-4.

(1)

Index to enumerate the line features in the spectrum (blended lines share the same index).

(2)

Quantum numbers of the upper and lower levels of the transitions.

(3)

Energy of the upper level.

(4)

Einstein coefficient of spontaneous emission.

(5)

Line strength defined as | μij | 2 = Sijμ2 where μ is the dipole moment.

(6)

Degeneracy of the upper level.

(7)

Velocity integrated intensity.

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