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Table A.1

Molecules and transitions detected toward L1521E.

Molecule Transition ν Aij Eup ∫ TMBdV VLSR ΔV Tpeak 3σ rms Critical Detected toward
(MHz) (s−1) (K) (K km s−1) (km s−1) (km s−1) (K) (K) density (cm−3) L1544 (a)
            
C4H N = 8–7, J = 15/2–13/2, F = 7–6 & 8–7 76 156.0 1.82 × 10−6 16.5 0.19 ± 0.01 6.76 ± 0.01 0.37 ± 0.02 0.47 0.13 − −
                       
CH3CHO* 40,4−30,3, E 76 866.4 1.43 × 10−5 9.3 0.05 ± 0.01 6.79 ± 0.04 0.40 ± 0.09 0.12 0.03 − −
                       
CH3CHO 40,4−30,3, A 76 879.0 1.43 × 10−5 9.2 0.06 ± 0.01 7.07 ± 0.03 0.39 ± 0.07 0.15 0.03 − −
                       
C2S N = 6–5, J = 6–5 77 731.7 2.03 × 10−5 21.8 0.23 ± 0.01 6.77 ± 0.01 0.36 ± 0.02 0.62 0.18 − −
                       
CC34S* N = 6–5, J = 7–6 79 827.5 2.31 × 10−5 15.1 0.05 ± 0.01 7.03 ± 0.03 0.32 ± 0.05 0.16 0.04 − −
                       
l-C4H 91,9−81,8 80 046.7 4.69 × 10−5 32.7 0.03 ± 0.01 6.81 ± 0.05 0.35 ± 0.08 0.08 0.01 − −
                       
H2CCO* 80 076.7 5.04 × 10−6 22.7 0.07 ± 0.01 7.04 ± 0.02 0.34 ± 0.05 0.20 0.05 − −
                       
H2CCO 80 832.1 5.52 × 10−6 9.7 0.05 ± 0.01 6.93 ± 0.07 0.53 ± 0.13 0.09 0.03 − −
                       
C3S* J = 14–13 80 928.2 3.86 × 10−5 29.1 0.10 ± 0.02 6.89 ± 0.02 0.26 ± 0.06 0.35 0.07 − −
                       
C2S* N = 6–5, J = 7–6 81 505.2 2.46 × 10−5 15.4 0.81 ± 0.02 6.71 ± 0.01 0.35 ± 0.01 2.18 0.35 − Yes
                       
HC3N* J = 9–8 81 881.5 4.20 × 10−5 19.7 0.80 ± 0.01 6.87 ± 0.01 0.33 ± 0.01 2.30 0.34 4.2 × 105 Yes
                       
c-C3H 82 093.5 2.07 × 10−5 6.4 0.41 ± 0.01 6.84 ± 0.01 0.33 ± 0.01 1.16 0.17 1.1 × 106 Yes
                       
OCS* J = 7–6 85 139.1 1.71 × 10−6 16.3 0.06 ± 0.01 6.82 ± 0.04 0.43 ± 0.09 0.13 0.04 2.3 × 104 Yes
                       
HC18O+* J = 1–0 85 162.2 3.64 × 10−5 4.1 0.07 ± 0.01 6.80 ± 0.02 0.33 ± 0.05 0.21 0.05 1.4 × 105 Yes
                       
c-C3H2 85 338.9 2.55 × 10−5 6.5 0.81 ± 0.01 6.88 ± 0.01 0.39 ± 0.01 1.95 0.51 1.2 × 106 Yes
                       
HCS+* J = 2–1 85 347.9 1.33 × 10−5 6.1 0.24 ± 0.01 6.94 ± 0.01 0.27 ± 0.02 0.83 0.11 3.5 × 104 Yes
                       
CH3CCH JK = 51–41 85 455.6 1.78 × 10−6 19.5 0.16 ± 0.01 6.60 ± 0.01 0.34 ± 0.02 0.45 0.12 − Yes
                       
CH3CCH JK = 50–40 85 457.3 2.03 × 10−6 12.3 0.18 ± 0.01 6.84 ± 0.01 0.34 ± 0.02 0.48 0.12 − Yes
                       
C4H* N = 9–8, J = 19/2–17/2, F = 10–9 & 9–8 85 634.0 2.81 × 10−6 20.6 0.15 ± 0.01 6.87 ± 0.01 0.31 ± 0.03 0.46 0.10 − Yes
                       
C4H N = 9–8, J = 17/2–15/2, F = 9–8 & 8–7 85 672.6 2.79 × 10−6 20.6 0.14 ± 0.01 6.93 ± 0.02 0.27 ± 0.02 0.48 0.10 − Yes
                       
SO NJ = 22–11 86 094.0 5.25 × 10−6 19.3 0.10 ± 0.01 7.06 ± 0.02 0.36 ± 0.03 0.24 0.05 8.2 × 104 Yes
                       
C2S NJ = 76–65 86 181.4 2.78 × 10−5 23.4 0.24 ± 0.01 6.83 ± 0.01 0.31 ± 0.01 0.71 0.14 − Yes
                       
H13CN JF = 11–01 86 338.8 2.22 × 10−5 4.1 0.11 ± 0.01 7.06 ± 0.03 0.42 ± 0.06 0.24 0.10 − Yes
                       
H13CN* JF = 12–01 86 340.2 2.22 × 10−5 4.1 0.15 ± 0.02 6.95 ± 0.03 0.41 ± 0.06 0.34 0.10 − Yes
                       
H13CN JF = 10–01 86 342.3 2.22 × 10−5 4.1 0.04 ± 0.01 6.97 ± 0.03 0.29 ± 0.07 0.14 0.10 − Yes
                       
HCO* , J = 3/2–1/2, F = 2–1 86 670.8 4.69 × 10−6 4.2 0.07 ± 0.01 7.17 ± 0.03 0.39 ± 0.06 0.17 0.05 − Yes
                       
HN13C* J = 1–0 87 090.9 1.87 × 10−5 4.2 0.31 ± 0.04 7.13 ± 0.03 0.58 ± 0.08 0.49 0.17 − Yes
                       
C2H N = 1–0, J = 3/2–1/2, F = 1–1 87 284.2 3.75 × 10−7 4.2 0.33 ± 0.05 6.98 ± 0.02 0.31 ± 0.05 0.98 0.20 7.5 × 104 Yes
                       
C2H N = 1–0, J = 3/2–1/2, F = 2–1 87 316.9 2.21 × 10−6 4.2 0.79 ± 0.05 6.96 ± 0.01 0.40 ± 0.03 1.88 0.46 1.8 × 105 Yes
                       
C2H N= 1–0, J = 3/2–1/2, F = 1–0 87 328.6 1.83 × 10−6 4.2 0.58 ± 0.04 7.00 ± 0.01 0.38 ± 0.03 1.46 0.34 2.3 × 105 Yes
                       
C2H N= 1–0, J = 1/2–1/2, F = 1–1 87 402.0 1.83 × 10−6 4.2 0.44 ± 0.05 6.94 ± 0.02 0.33 ± 0.04 1.24 0.38 1.7 × 105 Yes
                       
C2H* N= 1–0, J = 1/2–1/2, F = 0–1 87 407.2 2.22 × 10−6 4.2 0.38 ± 0.04 6.87 ± 0.01 0.30 ± 0.04 1.18 0.21 1.4 × 105 Yes
                       
C2H N= 1–0, J = 1/2–1/2, F = 1–0 87 446.5 3.77 × 10−7 4.2 0.21 ± 0.04 7.01 ± 0.02 0.26 ± 0.09 0.76 0.18 7.1 × 104 Yes
                       
HNCO* JKa,Kc = 40,4 − 30,3 87 925.3 8.46 × 10−6 10.6 0.21 ± 0.04 6.81 ± 0.05 0.54 ± 0.12 0.37 0.11 1.2 × 106 Yes
                       
HCN JF = 11 –01 88 630.4 2.43 × 10−5 4.3 0.62 ± 0.01 6.86 ± 0.01 0.55 ± 0.01 1.06 0.41 4.3 × 106 Yes
                       
HCN* JF = 12 –01 88 631.9 2.43 × 10−5 4.3 0.85 ± 0.08 7.14 ± 0.03 0.49 ± 0.06 1.61 0.41 4.3 × 106 Yes
                       
HCN JF = 10 –01 88 633.9 2.43 × 10−5 4.3 0.65 ± 0.01 6.73 ± 0.01 0.52 ± 0.01 1.19 0.41 4.3 × 106 Yes
                       
HCO+* J= 1–0 89 188.5 4.19 × 10−5 4.3 1.46 ± 0.01 6.86 ± 0.01 0.55 ± 0.01 2.50 0.79 1.6 × 105 Yes
                       
CH3CN* JK = 51 –41 91 985.3 6.08 × 10−5 20.4 0.03 ± 0.01 6.76 ± 0.06 0.38 ± 0.10 0.08 0.03 5.3 × 105 Yes
CH3CN JK = 50 –40 91 987.1 6.33 × 10−5 13.2 0.04 ± 0.01 6.98 ± 0.05 0.48 ± 0.08 0.09 0.03 5.4 × 105 Yes
                       
C3S J= 16–15 92 488.5 6.13 × 10−5 37.7 0.06 ± 0.01 6.91 ± 0.03 0.40 ± 0.07 0.13 0.03 − Yes
                       
13CS* JF = 20 − 10 92 494.3 1.41 × 10−5 6.7 0.30 ± 0.01 6.95 ± 0.01 0.38 ± 0.01 0.73 0.16 − Yes
                       
N2H+ J= 1–0, F1 = 1–1, F = 0–1 93 171.6 1.45 × 10−6 4.5 0.04 ± 0.01 6.80 ± 0.06 0.40 (b) 0.09 0.23 9.1 × 103 Yes
                       
N2H+ J= 1–0, F1 = 1–1, F = 2–2 93 171.9 6.89 × 10−6 4.5 0.10 ± 0.01 6.83 ± 0.02 0.40 (b) 0.24 0.23 1.7 × 105 Yes
                       
N2H+ J= 1–0, F1 = 1–1, F = 1–0 93 172.1 3.99 × 10−6 4.5 0.07 ± 0.01 7.09 ± 0.03 0.40 (b) 0.16 0.23 1.0 × 105 Yes
                       
N2H+ J= 1–0, F1 = 2–1, F = 2–1 93 173.5 6.53 × 10−6 4.5 0.10 ± 0.01 6.95 ± 0.01 0.40 ± 0.03 0.24 0.23 1.6 × 105 Yes
                       
N2H+ J= 1–0, F1 = 2–1, F = 3–2 93 173.8 9.43 × 10−6 4.5 0.16 ± 0.01 6.98 ± 0.01 0.41 ± 0.03 0.36 0.23 5.9 × 104 Yes
                       
N2H+ J= 1–0, F1 = 2–1, F = 1–1 93 174.0 3.99 × 10−6 4.5 0.06 ± 0.01 7.02 ± 0.03 0.38 ± 0.06 0.15 0.23 8.9 × 105 Yes
                       
N2H+* J= 1–0, F1 = 0–1, F = 1–2 93 176.3 3.99 × 10−6 4.5 0.07 ± 0.01 6.91 ± 0.02 0.35 ± 0.04 0.19 0.23 2.2 × 105 Yes
                       
C4H N= 10–9, J = 21/2–19/2, F = 10–9 & 11–10 95 150.4 3.60 × 10−6 25.1 0.10 ± 0.01 6.93 ± 0.01 0.30 ± 0.02 0.32 0.07 − Yes
                       
C4H N= 10–9, J = 19/2–17/2, F = 9–8 & 10–9 95 189.0 3.58 × 10−6 25.1 0.10 ± 0.01 7.03 ± 0.02 0.37 ± 0.05 0.24 0.07 − Yes
                       
CH3CHO 50,5 − 40,4, (E) 95 947.4 2.84 × 10−5 13.9 0.03 ± 0.01 6.65 ± 0.05 0.40 ± 0.05 0.08 0.02 − Yes
                       
C34S* J= 2–1 96 412.9 1.61 × 10−5 6.3 0.64 ± 0.01 6.86 ± 0.01 0.40 ± 0.01 1.51 0.30 − Yes
                       
CH3OH* 2−1,0 − 1−1,0 (E2) 96 739.3 2.56 × 10−6 12.5 0.32 ± 0.01 6.67 ± 0.01 0.40 ± 0.01 0.76 0.20 2.9 × 104 Yes
                       
CH3OH* 20,2 − 10,1 (A+) 96 741.4 3.41 × 10−6 7.0 0.43 ± 0.01 6.93 ± 0.01 0.39 ± 0.01 1.05 0.20 3.1 × 104 Yes
                       
C33S* J= 2–1, F = 5/2–3/2, 7/2–5/2, & 1/2–1/2 97 171.8 1.63 × 10−5 6.3 0.12 ± 0.01 6.83 ± 0.01 0.29 ± 0.03 0.39 0.08 − Yes
                       
34SO* NJ = 23−12 97 715.4 1.09 × 10−5 9.1 0.09 ± 0.02 6.81 ± 0.02 0.26 ± 0.07 0.32 0.03 − Yes
                       
CS* J = 2–1 97 981.0 1.70 × 10−5 7.1 1.53 ± 0.01 7.00 ± 0.01 0.57 ± 0.01 2.51 0.92 3.4 × 105 Yes
                       
SO* J = 3–2, N = 2–1 99 299.9 1.15 × 10−5 9.2 0.82 ± 0.02 6.92 ± 0.01 0.38 ± 0.01 2.05 0.39 2.8 × 105 Yes
                       
C2S N = 8–7, J = 7–6 99 866.5 4.47 × 10−5 28.1 0.14 ± 0.01 6.84 ± 0.01 0.31 ± 0.02 0.41 0.09 − Yes
                       
HC3N J = 11–10 100 076.4 7.74 × 10−5 28.8 0.43 ± 0.01 6.87 ± 0.01 0.36 ± 0.01 1.12 0.31 8.8 × 105 Yes
                       
H2CS JKa,Kc = 31,3−21,2 101 477.8 1.26 × 10−5 22.9 0.63 ± 0.01 6.79 ± 0.01 0.33 ± 0.01 1.81 0.41 1.6 × 105 Yes
                       
H2CCO JKa,Kc = 51,4−41,3 101 981.4 1.09 × 10−5 27.7 0.09 ± 0.01 6.77 ± 0.02 0.37 ± 0.07 0.24 0.04 − Yes
                       
CH3CCH JK = 61−51 102 546.0 3.17 × 10−6 24.4 0.13 ± 0.02 6.91 ± 0.03 0.32 ± 0.06 0.38 0.10 − Yes
                       
CH3CCH* JK = 60−50 102 548.0 3.26 × 10−6 17.2 0.12 ± 0.02 6.79 ± 0.02 0.29 ± 0.04 0.40 0.10 − Yes
                       
H2CS* JKa,Kc = 30,3−20,2 103 040.5 1.48 × 10−5 9.8 0.58 ± 0.02 6.85 ± 0.01 0.33 ± 0.02 1.65 0.22 1.4 × 105 Yes
                       
H2CS JKa,Kc = 31,2−21,1 104 617.0 1.38 × 10−5 23.2 0.59 ± 0.01 6.75 ± 0.01 0.34 ± 0.01 1.65 0.38 2.3 × 105 Yes
                       
C4H N = 11–10, J = 23/2–21/2, F = 11–10 & 12–11 104 666.6 4.83 × 10−6 30.1 0.07 ± 0.01 6.95 ± 0.03 0.42 ± 0.08 0.16 0.04 − Yes
                       
C17O J = 1–0 F = 3/2–5/2 112 358.8 6.70 × 10−8 5.4 0.12 ± 0.02 6.89 ± 0.02 0.31 ± 0.05 0.36 0.15 2.0 × 103 −
                       
C17O J = 1–0 F = 7/2–5/2 112 359.0 6.70 × 10−8 5.4 0.31 ± 0.02 6.86 ± 0.01 0.41 ± 0.03 0.71 0.15 2.0 × 103 −
                       
C17O* J = 1–0 F = 5/2–5/2 112 360.0 6.70 × 10−8 5.4 0.24 ± 0.01 6.78 ± 0.01 0.42 ± 0.03 0.54 0.15 2.0 × 103 −
                       
CN* N = 1–0, J = 1/2–1/2, F = 1/2–3/2 113 144.2 1.05 × 10−5 5.4 0.27 ± 0.02 6.90 ± 0.02 0.46 ± 0.03 0.55 0.14 3.4 × 105 −
                       
CN N = 1–0, J = 1/2–1/2, F = 3/2–1/2 113 170.5 5.14 × 10−6 5.4 0.21 ± 0.02 6.85 ± 0.02 0.40 ± 0.04 0.48 0.14 6.3 × 104 −
                       
CN N = 1–0, J = 1/2–1/2, F = 3/2–3/2 113 191.3 6.68 × 10−6 5.4 0.26 ± 0.02 6.89 ± 0.01 0.44 ± 0.03 0.55 0.14 1.3 × 105 −

Notes. The line parameters are measured toward the Herschel dust peak using Gaussian fitting. Some of the detections toward L1544 are based on the spectrum measured in the ~80–106 GHz frequency range toward the dust peak of L1544 as part of ASAI (Lefloch et al. 2018; Vastel et al. 2018). The transitions marked with an asterisk were used to calculate column densities (Sect. 4.3) and for the principal component analysis (Sect. 4.2). (a) The transitions which are marked with “−” were not covered in the available dataset for L1544. (b)Fixed parameter in the fit.

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