Table A.1
Lines of CH3NC and HCCNC detected in the EMoCA spectrum of Sgr B2(N2).
| Transition(a) | Frequency | Unc.(b) | Eup (c) | gup (d) | Aul (e) | σ(f) | τpeak(g) | Frequency range(h) | Iobs(i) | Imod(j) | Iall(k) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (MHz) | (kHz) | (K) | (s−1) | (mK) | (MHz) | (MHz) | (K km s−1) | (K km s−1) | ||||
| CH3NC | ||||||||||||
| 52–42 | 100 517.433 | 90 | 43 | 22 | 6.8(− 5) | 141 | 0.109 | 100 515.3 | 100 519.2 | 48.5(6) | 42.5 | 49.3 |
| 51–41 | 100 524.249 | 90 | 22 | 22 | 7.8(− 5) | 141 | 0.144 | 100 523.1 | 100 525.6 | 66.9(5) | 52.7 | 57.2 |
| HCCNC | ||||||||||||
| 109–98 | 99 354.250 | 15 | 26 | 19 | 4.6(− 5) | 162 | 0.022 | 99 352.7 | 99 356.1 | 7.1(6) | 7.6 | 7.8 |
| 109–99 | 99 354.250 | 15 | 26 | 19 | 5.2(− 7) | – | – | – | – | – | – | – |
| 109–910 | 99 354.250 | 15 | 26 | 19 | 1.3(− 9) | – | – | – | – | – | – | – |
| 1010 – 99 | 99 354.250 | 15 | 26 | 21 | 4.6(− 5) | – | – | – | – | – | – | – |
| 1010 – 910 | 99 354.250 | 15 | 26 | 21 | 4.7(− 7) | – | – | – | – | – | – | – |
| 1011–910 | 99 354.250 | 15 | 26 | 23 | 4.7(− 5) | – | – | – | – | – | – | – |
| 1110 – 10 | 109 289.095 | 15 | 32 | 21 | 6.2(− 5) | 123 | 0.026 | 109 287.6 | 109 291.0 | 14.7(4) | 9.7 | 12.6 |
| 1110–11 | 109 289.095 | 15 | 32 | 21 | 5.7(− 7) | – | – | – | – | – | – | – |
| 1110–11 | 109 289.095 | 15 | 32 | 21 | 1.2(− 9) | – | – | – | – | – | – | – |
| 1111 – 11 | 109 289.095 | 15 | 32 | 23 | 6.2(− 5) | – | – | – | – | – | – | – |
| 1111 – 11 | 109 289.095 | 15 | 32 | 23 | 5.2(− 7) | – | – | – | – | – | – | – |
| 1112–11 | 109 289.095 | 15 | 32 | 25 | 6.2(− 5) | – | – | – | – | – | – | – |
Notes. (a) Quantum numbers of the upper and lower levels. (b)Frequency uncertainty. (c)Upper level energy. (d)Upper level degeneracy. (e) Einstein coefficient for spontaneous emission. X(Y) means X × 10Y. (f) Measured rms noise level. (g) Peak opacity of the synthetic line. (h) Frequency range over which the emission was integrated. (i)Integrated intensity of the observed spectrum in brightness temperature scale. The statistical standard deviation is given in parentheses in unit of the last digit. (j) Integrated intensity of the synthetic spectrum of the selected state. (k)Integrated intensity of the model that contains the contribution of all identified molecules, including CH3NC and HCCNC.
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