Open Access
Table A.2
Transitions used to determine upper limit for molecules detected in none of the sources.
| Molecule | Frequency (MHz) | Eup (K) | Gup | Aij (s−1) | Ttransition | nc (cm−3) |
|---|---|---|---|---|---|---|
| c-C3H2 | 82 093.559 | 6.4 | 5 | 2.07 × 10−5 | 2 0 2 0 – 1 1 1 0 | 1 × 106 |
| l-C3H2 | 83 165.345 | 10.0 | 9 | 5 × 10−5 | 4 0 4 – 3 0 3 | − |
| CH3CN | 73590.218 | 8.8 | 18 | 3.17 × 10−5 | 4 0 – 3 0 | 2 × 105 |
| C3N | 79 150.986 | 17.1 | 16 | 1.29 × 10−5 | 8 9 8 – 7 8 7 | − |
| c-C3H | 121 273.585 | 6.5 | 3 | 2.05 × 10−5 | 2 1 1 2 1 – 1 1 0 1 0 | − |
| l-C5H2 | 73 447.066 | 30.0 | 33 | 7.78 × 10−5 | 16 016 – 15 015 | − |
| HNC3 | 74 692.276 | 16.1 | 19 | 7.33 × 10−5 | 8 9 – 7 8 | − |
| HCCNC | 79 484.131 | 17.2 | 19 | 2.36 × 10−5 | 8 9 – 7 8 | – |
| H2CCN | 80 479.940 | 9.7 | 90 | 3.30 × 10−5 | 4 0 4 5 – 3 0 3 4 | – |
| HC3N | 72 783.822 | 15.7 | 51 | 2.93 × 10−5 | 8 – 7 | 5 × 105 |
| l-C4H2 | 80 383.887 | 19.3 | 19 | 4.81 × 10−5 | 9 0 9 – 8 0 8 | − |
| N2H+ | 93 176.130 | 4.5 | 3 | 3.63 × 10−5 | 1 0 – 0 1 | 1 × 105 |
| H2CS | 103 040.220 | 9.9 | 7 | 1.48 × 10−5 | 3 0 3 – 2 0 2 | 1 × 105 |
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