Table 1
Observed lines used in this work.
| Species | Transition | Eup | 𝑔up | Aij | Rest Freq. | θmaj × θmin (PA) | rmschan | ∆υ | Telescope |
|---|---|---|---|---|---|---|---|---|---|
| (K) | (s−1) | (GHz) | ("×", °) | (mK) | (km s−1) | ||||
| C2H | 11.5,1 → 00.5,0 | 4.191 | 3 | 1.272 × 10−6 | 87.328585 | 2.12 × 1.47 (−157.6) | 177 | 0.21 | NOEMA + 30m |
| 11.5,1 → 00.5,1 | 4.191 | 3 | 2.599 × 10−7 | 87.284105 | 2.12 × 1.47 (−157.6) | 185 | 0.21 | NOEMA + 30m | |
| 11.5,2 → 00.5,1 | 4.193 | 5 | 1.531 × 10−6 | 87.316898 | 2.12 × 1.47 (−157.6) | 179 | 0.21 | NOEMA + 30m | |
| 11.5,1 → 00.5,0 | 4.197 | 3 | 2.613 × 10−7 | 87.446470 | 2.11 × 1.47 (−157.6) | 168 | 0.21 | NOEMA + 30m | |
| 11.5,1 → 00.5,1 | 4.197 | 3 | 1.275 × 10−6 | 87.401989 | 2.11 × 1.47 (−157.6) | 169 | 0.21 | NOEMA + 30m | |
| 11.5,0 → 00.5,1 | 4.197 | 1 | 1.536 × 10−6 | 87.407165 | 2.11 × 1.47 (−157.6) | 169 | 0.21 | NOEMA + 30m | |
| c-C3H2 (†) | 21,2 → 10,1 | 6.445 | 15 | 2.322 × 10−5 | 85.338894 | 2.22 × 1.50 (−159.6) | 32 | 7.03 | NOEMA + 30m |
| 31,2 → 22,1 | 16.05 | 21 | 6.768 × 10−5 | 145.089606 | 2.67 × 2.36 (116.0) | 183 | 0.52 | NOEMA + 30m | |
| 31,2 → 30,3 | 16.05 | 21 | 9.919 × 10−6 | 82.966200 | 2.23 × 1.57 (21.9) | 184 | 0.23 | NOEMA + 30m | |
| 41,4 → 30,3 | 19.31 | 27 | 1.638 × 10−4 | 150.851908 | 2.78 × 2.33 (44.7) | 241 | 0.50 | NOEMA + 30m | |
| HC3N | 8 → 7 | 15.72 | 17 | 2.941 × 10−5 | 72.783822 | 35.63 × 35.63 (0) | 90 | 0.20 | 30m |
| 9 → 8 | 19.65 | 19 | 4.215 × 10−5 | 81.881468 | 31.67 × 31.67 (0) | 47 | 0.18 | 30m | |
| 10 → 9 | 24.02 | 21 | 5.812 × 10−5 | 90.979023 | 28.50 × 28.50 (0) | 192 | 0.16 | 30m | |
| 11 → 10 | 28.82 | 23 | 7.769 × 10−5 | 100.076392 | 1.82 × 1.30 (24.4) | 188 | 0.19 | NOEMA + 30m | |
| 11 → 10 | 28.82 | 23 | 7.769 × 10−5 | 100.076392 | 25.91 × 25.91 (0) | 39 | 0.15 | 30m | |
| 12 → 11 | 34.06 | 25 | 1.012 × 10−4 | 109.173634 | 23.75 × 23.75 (0) | 226 | 0.13 | 30m | |
Notes. The energies, degeneracies, Einstein coefficients and rest frequencies are taken from the CDMS (Müller et al. 2001, 2005). Critical densities of each lines are available in Table C.1. The per channel-rms is estimated as the mean value from line-free channels of cubes after primary beam correction. ∆υ gives the velocity resolution for each cube.(†) All considered lines of c-C3H2 are ortho lines.
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