Table 1
Properties of the observed transitions for Eup lower than 30 K.
| Species | QN | Frequency | Eup | Aij | rms | Tmb | W | FWHM | VLSR |
|---|---|---|---|---|---|---|---|---|---|
| (GHz) | (K) | (s−1) | (mK) | (mK) | (mK km s−1) | (km s−1) | (km s−1) | ||
| CNCN | 7–6 | 72.436917 (multiplet) | 13.91 | ≥10−6 | 7.7 | – | – | – | – |
| 8–7 | 82.784691 (multiplet) | 17.88 | ≥10−6 | 3.6 | 11.5 ± 4.9 | 5.0 ± 3.8 | 0.41 ± 0.20 | 7.2 ± 0.1 | |
| 9–8 | 93.1323 (multiplet) | 22.35 | ≥10−6 | 3.1 | – | – | – | – | |
| 10–9 | 103.4798 (multiplet) | 27.31 | ≥10−6 | 5.3 | 15.6 ± 1.5 | 10.1 ± 2.1 | 0.61 ± 0.07 | 7.3 ± 0.1 | |
| NCCNH+ | 9–8 | 79.8826559 | 19.17 | 1.17 × 10−4 | 5.3 | – | – | – | – |
| 10–9 | 88.7581034 | 23.43 | 1.61 × 10−4 | 2.4 | 16.6 ± 2.2 | 7.4 ± 2.0 | 0.42 ± 0.06 | 7.2 ± 0.1 | |
| 11–10 | 97.6334236 | 28.11 | 2.15 × 10−4 | 5.4 | – | – | – | – | |
| C3N | 8 (J = 17/2)–7 (J = 15/2) | 79.151 (triplet) | 17.09 | ~2 × 10−5 | 3.9 | 137.8 ± 4.1 | 64.3 ± 4.8 | 0.44 ± 0.02 | 7.3 ± 0.1 |
| 8 (J = 15/2)–7 (J = 13/2) | 79.1697 (triplet) | 17.10 | ~2 × 10−5 | 4.4 | 132.3 ± 4.3 | 57.5 ± 4.7 | 0.41 ± 0.02 | 7.2 ± 0.1 | |
| 9 (J = 19/2)–8 (J = 17/2) | 89.0456 (triplet) | 21.37 | ~3 × 10−5 | 2.7 | 87.6 ± 2.7 | 35.3 ± 2.0 | 0.38 ± 0.01 | 7.3 ± 0.1 | |
| 9 (J = 17/2)–8 (J = 15/2) | 89.0643 (triplet) | 21.37 | ~3 × 10−5 | 2.2 | 76.8 ± 2.2 | 28.5 ± 2.4 | 0.35 ± 0.02 | 7.3 ± 0.1 | |
| 10 (J = 21/2)–9 (J = 19/2) | 98.9400 (triplet) | 26.11 | ~4 × 10−5 | 2.8 | 46.4 ± 2.4 | 18.2 ± 1.9 | 0.37 ± 0.02 | 7.3 ± 0.1 | |
| 10 (J = 19/2)–9 (J = 17/2) | 98.9587 (triplet) | 26.12 | ~4 × 10−5 | 2.5 | 44.1 ± 2.2 | 16.8 ± 1.8 | 0.36 ± 0.02 | 7.3 ± 0.1 | |
| A-CH3CN | 40–30 | 73.5902185 | 8.83 | 3.17 × 10−5 | 4.7 | 185.9 ± 6.0 | 122.2 ± 7.9 | 0.62 ± 0.02 | 7.3 ± 0.1 |
| 50–40 | 91.9870877 | 13.24 | 6.33 × 10−5 | 2.1 | 133.0 ± 1.9 | 66.3 ± 2.35 | 0.47 ± 0.01 | 7.3 ± 0.1 | |
| 60–50 | 110.3835001 | 18.54 | 1.11 × 10−4 | 5.9 | 77.2 ± 5.1 | 29.5 ± 4.4 | 0.36 ± 0.03 | 7.3 ± 0.1 | |
| E-CH3CN | 41–31 | 73.5887995 | 7.95 | 2.97 × 10−5 | 4.7 | 125.3 ± 5.0 | 77.0 ± 9.7 | 0.58 ± 0.05 | 7.2 ± 0.1 |
| 51–41 | 91.9853142 | 12.36 | 6.07 × 10−5 | 2.1 | 89.3 ± 2.1 | 49.2 ± 2.1 | 0.52 ± 0.01 | 7.3 ± 0.1 | |
| 61–51 | 110.3813721 | 17.66 | 1.08 × 10−4 | 5.9 | 53.4 ± 3.4 | 27.7 ± 4.0 | 0.49 ± 0.04 | 7.3 ± 0.1 | |
| C2H3CN | 80,8–70,7 | 75.5856915 | 16.35 | 3.44 × 10−5 | 4.1 | 102.8 ± 4.1 | 41.6 ± 3.8 | 0.38 ± 0.02 | 7.3 ± 0.1 |
| 81,8–71,7 | 73.9815530 | 18.15 | 3.18 × 10−5 | 4.4 | 83.2 ± 4.6 | 31.0 ± 3.5 | 0.35 ± 0.02 | 7.3 ± 0.1 | |
| 81,7–71,6 | 77.6338240 | 18.94 | 3.67 × 10−5 | 2.9 | 59.0 ± 2.0 | 28.3 ± 2.8 | 0.45 ± 0.03 | 7.3 ± 0.1 | |
| 90,9–80,8 | 84.9460000 | 20.43 | 4.92 × 10−5 | 2.6 | 53.3 ± 2.6 | 28.4 ± 3.1 | 0.50 ± 0.03 | 7.3 ± 0.1 | |
| 91,9–81,8 | 83.2075051 | 22.14 | 4.56 × 10−5 | 2.8 | 43.1 ± 2.8 | 21.1 ± 2.7 | 0.46 ± 0.03 | 7.3 ± 0.1 | |
| 91,8–81,7 | 87.3128120 | 23.13 | 5.27 × 10−5 | 5.3 | 35.8 ± 4.4 | 19.4 ± 5.0 | 0.51 ± 0.07 | 7.2 ± 0.1 | |
| 100,10–90,9 | 94.2766360 | 24.95 | 6.76 × 10−5 | 2.9 | 27.3 ± 2.5 | 12.8 ± 2.6 | 0.44 ± 0.05 | 7.3 ± 0.1 | |
| 82,7–72,6 | 75.8388620 | 25.04 | 3.26 × 10−5 | 2.6 | 14.2 ± 2.3 | 7.7 ± 2.8 | 0.51 ± 0.10 | 7.2 ± 0.1 | |
| 82,6–72,5 | 76.1288810 | 25.08 | 3.30 × 10−5 | 2.8 | 14.8 ± 2.2 | 7.1 ± 3.4 | 0.45 ± 0.15 | 7.3 ± 0.1 | |
| 101,10 –91,9 | 92.4262500 | 26.58 | 6.30 × 10−5 | 2.2 | 21.6 ± 1.9 | 10.1 ± 1.8 | 0.44 ± 0.04 | 7.3 ± 0.1 | |
N = 10,1 –00,0 |
|||||||||
| J F1 F | |||||||||
| H2 CN | 1/2 3/2 5/2–1/2 3/2 5/2 | 73.4442400 | 3.54 | 8.20 × 10−6 | 3.6 | 19.1 ± 3.8 | 5.5 ± 2.3 | 0.27 ± 0.06 | 7.2 ± 0.1 |
| 3/2 1/2 3/2–1/2 1/2 3/2 | 73.3693660 | 3.52 | 7.56 × 10−6 | 4.2 | 14.0 ± 3.9 | 7.3 ± 4.7 | 0.49 ± 0.18 | 7.3 ± 0.1 | |
| 3/2 5/2 3/2–1/2 3/2 1/2 | 73.3425070 | 3.54 | 7.68 × 10−6 | 4.1 | 14.4 ± 3.9 | 7.3 ± 4.8 | 0.48 ± 0.19 | 7.1 ± 0.1 | |
| 3/2 5/2 5/2–1/2 3/2 3/2 | 73.3454860 | 3.54 | 8.50 × 10−6 | 4.0 | 17.4 ± 4.1 | 5.5 ± 2.6 | 0.30 ± 0.07 | 7.1 ± 0.1 | |
| 3/2 1/2 1/2–1/2 1/2 3/2 | 73.3492030 | 3.52 | 9.15 × 10−6 | 4.1 | 7.9 ± 3.9 | 2.6 ± 2.2 | 0.51 ± 0.20 | 7.1 ± 0.2 | |
| 3/1 5/2 7/2–1/2 3/2 5/2 | 73.3496480 | 3.54 | 9.88 × 10−6 | 4.1 | 26.6 ± 3.1 | 8.5 ± 2.1 | 0.30 ± 0.04 | 7.2 ± 0.1 | |
Notes. The spectroscopic parameters are from JPL for CNCN (Gerry et al. 1990) and CDMS (Müller et al. 2005) for NCCNH+ (Amano & Scappini 1991), C3 N (Gottlieb et al. 1983), CH3 CN (Cazzoli & Puzzarini 2006), C2 H3CN (Müller et al. 2008) and H2CN (Yamamoto & Saito 1992). The rms has been computed over a range of 15 km s−1 with a spectral resolution of 50 kHz.
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