Table A.1
Identified molecular transitions in the three cores.
| Transitions | Frequency | Eup | Aij | S/N | ||
|---|---|---|---|---|---|---|
| (MHz) | (K) | (s−1) | 869 | 1390 | 4149 | |
| c-C3HD 32,2 – 31,3 | 79643.09 | 14.70 | 8.54 × 10−6 | 4 | ||
| c-C3HD 21,2 – 10,1 | 79812.33 | 5.85 | 1.64 × 10−5 | 60 | 147 | |
| c-C3HD 21,1 – 11,0 | 95994.08 | 7.56 | 4.52 × 10−6 | 12 | 27 | |
| c-CC13CH2 20,2 – 11,1 | 80047.54 | 6.30 | 1.66 × 10−5 | 16 | ||
| c-CC13CH2 31,2 – 30,3 | 80775.35 | 15.72 | 9.20 × 10−6 | 5 | ||
| c-CC13CH2 21,2 – 10,1 | 84185.63 | 6.33 | 2.17 × 10−5 | 16 | ||
| H2CCO 41,4 – 31,3 | 80076.65 | 22.66 | 5.04 × 10−6 | 16 | 15 | 15 |
| H2CCO 40,4 – 30,3 | 80832.12 | 9.70 | 5.52 × 10−6 | 11 | 7 | 10 |
| H2CCO 41,3 – 31,2 | 81586.23 | 22.84 | 5.33 × 10−6 | 13 | 6 | 13 |
| H2CCO 51,5 – 41,4 | 100094.51 | 27.46 | 1.03 × 10−5 | 12 | 8 | 10 |
| H2CCO 50,5 – 40,4 | 101036.63 | 14.55 | 1.10 × 10−5 | 7 | 7 | |
| C3S 14 – 13 | 80928.18 | 29.13 | 4.09 × 10−5 | 9 | ||
| CH2DCCH 51,5 – 41,4 | 80577.16 | 17.06 | 1.63 × 10−6 | 6 | ||
| CH2DCCH 50,5 – 40,4 | 80902.23 | 11.65 | 1.72 × 10−6 | 10 | ||
| CH2DCCH 51,4 – 41,3 | 81228.14 | 17.15 | 1.67 × 10−5 | 6 | ||
| CH2DCCH 61,6 – 51,5 | 96691.59 | 21.70 | 2.90 × 10−6 | 5 | ||
| CH2DCCH 60,6 – 50,5 | 97080.73 | 16.31 | 3.02 × 10−6 | 10 | ||
| CH2DCCH 61,5 – 51,4 | 97472.74 | 21.83 | 2.97 × 10−6 | 7 | ||
| HNO 10,1 – 00,0 | 81477.49 | 3.91 | 2.23 × 10−6 | 39 | 8 | 6 |
| CCS JN=76 – 65 | 81505.17 | 15.39 | 2.43 × 10−5 | 9 | 53 | 129 |
| CCS JN=78 – 67 | 99866.52 | 28.13 | 4.40 × 10−5 | 10 | 13 | |
| HC3N 9 – 8 | 81881.47 | 19.65 | 4.21 × 10−5 | 198 | 226 | |
| HC3N 11 –10 | 100076.39 | 28.82 | 7.77 × 10−5 | 54 | 67 | |
| p-c-C3H2 20,2 – 11,1 | 82093.54 | 6.42 | 1.89 × 10−5 | 13 | 121 | 122 |
| p-c-C3H2 32,2 – 31,3 | 84727.69 | 16.14 | 1.04 × 10−5 | 16 | 12 | |
| l-C3H2 41,4 – 31,3 | 82395.09 | 23.24 | 4.56 × 10−5 | 12 | 8 | |
| l-C3H2 40,4 – 30,3 | 83165.34 | 9.98 | 5.00 × 10−5 | 7 | 5 | |
| l-C3H2 41,3 – 31,2 | 83933.70 | 23.43 | 4.82 × 10−5 | 15 | 10 | |
| o-c-C3 H2 31,2 – 30,3 | 82966.20 | 13.70 | 9.92 × 10−6 | 52 | 24 | |
| o-c-C3 H2 21,2 – 10,1 | 85338.89 | 4.10 | 2.32 × 10−5 | 43 | 264 | 261 |
| CH3O N = 1 − 0, K = 0, J = 3∕2 − 1∕2, F = 1 − 1, Λ = +1 | 82455.98 | 3.96 | 6.52 × 10−6 | 5 | ||
| CH3O N = 1 − 0, K = 0, J = 3∕2 − 1∕2, F = 2 − 1, Λ = −1 | 82458.25 | 3.96 | 9.78 × 10−6 | 6 | 4 | |
| CH3O N = 1 − 0, K = 0, J = 3∕2 − 1∕2, F = 2 − 1, Λ = +1 | 82471.83 | 3.97 | 9.78 × 10−6 | 7 | 6 | |
| HOCN 40,4 – 30,3 | 83900.57 | 10.07 | 4.22 × 10−5 | 7 | ||
| DC3 N 10 – 9 | 84429.81 | 22.29 | 4.67 × 10−5 | 14 | 13 | |
| OCS 7 – 6 | 85139.10 | 16.34 | 1.71 × 10−6 | 28 | 19 | 22 |
| OCS 8 – 7 | 97301.21 | 21.01 | 2.58 × 10−6 | 21 | 12 | 14 |
| o-D2 CS 30,3 – 20,2 | 85153.92 | 8.18 | 8.47 × 10−6 | 17 | 22 | |
| HC18 O+ 1 – 0 | 85162.22 | 4.09 | 3.64 × 10−5 | 7 | 27 | 27 |
| HCS+ 2 – 1 | 85347.89 | 6.14 | 1.11 × 10−5 | 17 | 13 | 35 |
| e-CH3 CCH 52 – 42 | 85450.77 | 41.21 | 1.70 × 10−6 | 4 | ||
| e-CH3 CCH 51 – 41 | 85455.67 | 19.53 | 1.95 × 10−6 | 11 | 35 | |
| e-CH3 CCH 50 – 40 | 85457.30 | 12.30 | 2.03 × 10−6 | 9 | 36 | |
| HOCO+ 40,4 – 30,3 | 85531.50 | 10.26 | 2.36 × 10−5 | 9 | 9 | |
| C4 H N = 9–8 J = 9.5–8.5a | 85634.00 | 20.55 | 2.60 × 10−6 | 5 | 44 | 46 |
| C4 H N = 9–8 J = 8.5–7.5b | 85672.58 | 20.56 | 2.59 × 10−6 | 4 | 40 | 51 |
| C4 H N = 10–0 J= 10.5–9.5c | 95150.39 | 25.11 | 3.60 × 10−6 | 28 | 18 | |
| C4 H N = 10–0 J= 9.5–8.5d | 95188.95 | 25.13 | 3.58 × 10−6 | 26 | 16 | |
| NH2 D 11,1 – 10,1 F= 0–1 | 85924.78 | 20.09 | 7.81 × 10−6 | 87 | 41 | |
| NH2 D 11,1 – 10,1 F= 2–1 | 85925.70 | 20.09 | 1.95 × 10−6 | 107 | 58 | |
| NH2 D 11,1 – 10,1 F= 2–2e | 85926.27 | 20.09 | 5.86 × 10−6 | 112 | 117 | |
| NH2 D 11,1 – 10,1 F= 1–2 | 85926.88 | 20.09 | 3.25 × 10−6 | 107 | 47 | |
| NH2 D 11,1 – 10,1 F= 1–0 | 85927.73 | 20.09 | 2.60 × 10−6 | 94 | 48 | |
| E-CH3 CHO 50,5 – 40,4 | 95947.44 | 13.84 | 2.95 × 10−5 | 4 | 10 | 7 |
| E-CH3CHO 31,3 – 20,2 | 101343.44 | 7.64 | 3.90 × 10−6 | 4 | ||
| A-CH3CHO 50,5 – 40,4 | 95963.46 | 13.84 | 2.95 × 10−5 | 5 | 5 | 9 |
| A-CH3CHO 51,4 – 41,3 | 98900.94 | 16.51 | 3.10 × 10−5 | 5 | ||
| C3O 10 – 9 | 96214.62 | 25.40 | 2.82 × 10−5 | 5 | ||
| C34S 2 – 1 | 96412.95 | 6.94 | 1.60 × 10−5 | 57 | 64 | 65 |
| E-CH3OH 5−1 – 40 | 84521.17 | 32.49 | 1.97 × 10−6 | 4 | 6 | |
| E-CH3OH 2−1 – 1−1 | 96739.36 | 4.64 | 2.55 × 10−6 | 204 | 229 | 251 |
| E-CH3OH 20 – 10 | 96744.55 | 12.19 | 3.40 × 10−6 | 18 | 16 | 29 |
| A-CH3OH 20 – 10 | 96741.37 | 6.97 | 3.40 × 10−6 | 267 | 169 | 321 |
| A-CH3OH 21 – 11 | 97582.80 | 21.56 | 2.62 × 10−6 | 4 | ||
| 34SO 23 – 12 | 97715.32 | 9.09 | 1.07 × 10−5 | 55 | 69 | 33 |
| c-C3D2 31,3 – 20,2 | 97761.98 | 9.88 | 3.88 × 10−5 | 6 | 6 | |
| CS 2 – 1 | 97980.953 | 7.05 | 1.68 × 10−5 | 143 | 407 | 38 |
l-C3H  J=9/2-7/2 b F=4-3 |
97995.91 | 12.54 | 5.95 × 10−5 | 7 | ||
l-C3H  J=9/2-7/2 a F=5-4a |
98011.61 | 12.54 | 6.13 × 10−5 | 7 | 7 | |
l-C3H  J=9/2-7/2 a F=4-3 |
98012.52 | 12.54 | 5.96 × 10−5 | 7 | 7 | |
| 33SO 23,4.5 – 12,3.5 | 98493.64 | 9.16 | 1.10 × 10−5 | 6 | ||
| SO NJ = 23 – 12 | 99299.87 | 9.23 | 1.13 × 10−5 | 428 | 819 | 223 |
| NS+ 2–1 | 100198.47 | 7.21 | 2.21 × 10−5 | 4 | ||
| CH3SH 40,4,0 – 30,3,0 | 101139.11 | 12.14 | 9.23 × 10−6 | 5 | 5 | |
| CH3SH 41,3,1 – 31,2,1 | 101284.35 | 18.33 | 8.69 × 10−6 | 5 | ||
| o-H2C34S 30,3 – 20,2 | 101284.31 | 9.72 | 1.41 × 10−5 | 5 | ||
| o-H2CS 31,3 – 21,2 | 101477.80 | 8.12 | 1.26 × 10−5 | 22 | 36 | 82 |
Notes. S/N represents the signal-to-noise ratio, and we only quote values higher than or equal to 4σ.
(a) The nearby l-C3 H 97995.1660 MHz transition 
J=9/2-7/2 b F=5-4 falls in one of the frequency-switching absorption lines. We adopted the quantum classification by Loison et al. (2017). (a)The line is blended with C4H N,J,K =99.5,10 – 88.5,9.
(b) The line is blended with C4H N,J,K =98.5,9 – 87.5,8.
(c) The line is blended with C4H N,J,K =1010.5,11 – 99.5,10.
(d) The line is blended with C4H N,J,K =109.5,10 – 98.5,9.
(e) The line is blended with 11,1 – 10,1 F= 1–1.
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