Table A.1.
Observed lines of C4H3N isomers towards TMC-1 (CP).
| Transition | Rest freq. | Eup | Aij | Sij |  |
VLSR | Δv |  |
|
|---|---|---|---|---|---|---|---|---|---|
| (JKa, Kc)u − (JKa, Kc)l | (MHz) | (K) | (10−6 s−1) | (K km s−1) | (km s−1) | (km s−1) | (K) | ||
| HCCCH2CN, a-type, μa = 2.87 D | |||||||||
| 61, 6 − 51, 5 | 31848.982(3) | 6.2 | 1.39 | 5.83 | 0.0093(10) | 5.83(2) | 0.79(6) | 0.0111(8) | |
| 60, 6 − 50, 5 | 32722.702(3) | 5.5 | 1.55 | 5.99 | 0.0099(5) | 5.67(1) | 0.78(3) | 0.0120(4) | |
| 62, 5 − 52, 4 | 32876.187(3) | 8.8 | 1.40 | 5.33 | 0.0025(6) | 5.51(6) | 0.66(14) | 0.0036(5) | |
| 62, 4 − 52, 3 | 33048.726(3) | 8.8 | 1.42 | 5.33 | 0.0016(6) | 5.49(10) | 0.70(20) | 0.0021(5) | |
| 61, 5 − 51, 4 | 33863.716(3) | 6.5 | 1.67 | 5.83 | 0.0072(5) | 5.66(2) | 0.79(4) | 0.0085(4) | |
| 71, 7 − 61, 6 | 37139.207(4) | 8.0 | 2.24 | 6.86 | 0.0081(5) | 5.74(2) | 0.69(3) | 0.0110(5) | |
| 70, 7 − 60, 6 | 38102.698(4) | 7.3 | 2.47 | 6.99 | 0.0110(6) | 5.70(1) | 0.74(3) | 0.0140(5) | |
| 72, 6 − 62, 5 | 38342.339(4) | 10.6 | 2.32 | 6.43 | 0.0016(6) | 5.56(9) | 0.57(18) | 0.0027(7) | |
| 72, 5 − 62, 4 | 38616.702(4) | 10.7 | 2.37 | 6.43 | 0.0039(5) | 5.64(3) | 0.60(5) | 0.0061(6) | |
| 71, 6 − 61, 5 | 39486.580(4) | 8.4 | 2.70 | 6.86 | 0.0075(5) | 5.66(2) | 0.60(3) | 0.0117(6) | |
| 81, 8 − 71, 7 | 42421.779(4) | 10.0 | 3.39 | 7.87 | 0.0077(8) | 5.74(2) | 0.59(5) | 0.0122(9) | |
| 80, 8 − 70, 7 | 43450.742(4) | 9.4 | 3.70 | 7.99 | 0.0109(11) | 5.73(2) | 0.73(5) | 0.0140(10) | |
| 82, 7 − 72, 6 | 43802.419(4) | 12.7 | 3.55 | 7.50 | 0.0028(8) | 5.69(4) | 0.48(10) | 0.0056(10) | |
| 82, 6 − 72, 5 | 44210.195(4) | 12.8 | 3.66 | 7.50 | 0.0018(16) | 5.70(5) | 0.35(31) | 0.0047(11) | |
| 81, 7 − 71, 6 | 45099.074(4) | 10.6 | 4.07 | 7.87 | 0.0125(9) | 5.69(1) | 0.61(3) | 0.0192(10) | |
| 91, 9 − 81, 8 | 47696.032(5) | 12.3 | 4.86 | 8.89 | 0.0036(13) | 5.74(6) | 0.50(13) | 0.0068(17) | |
| 90, 9 − 80, 8 | 48764.484(5) | 11.8 | 5.26 | 8.98 | 0.0078(16) | 5.76(4) | 0.63(10) | 0.0117(14) | |
| HCCCH2CN, b-type, μb = 2.19 D | |||||||||
| 31, 3 − 20, 2, Fu − Fl = 3−2 | 32519.775(3) | 2.3 | 0.49 | 1.79 |  |
0.0031(8) | 5.59(9) (*) | 1.06(20) | 0.0028(5) |
| 31, 3 − 20, 2, Fu − Fl = 2−1 | 32519.815(3) | 2.3 | 0.46 | 1.21 | |||||
| 31, 3 − 20, 2, Fu − Fl = 4−3 | 32519.916(3) | 2.3 | 0.55 | 2.58 | 0.0013(4) | 5.73(7) | 0.58(22) | 0.0021(4) | |
| 90, 9 − 81, 8, Fu − Fl = 8−7 | 36933.586(4) | 11.8 | 0.74 | 4.44 |  |
0.0034(17) | 5.80(11) (*) | 1.16(31) | 0.0027(6) |
| 90, 9 − 81, 8, Fu − Fl = 10−9 | 36933.621(4) | 11.8 | 0.75 | 5.57 | |||||
| 90, 9 − 81, 8, Fu − Fl = 9−8 | 36933.800(4) | 11.8 | 0.74 | 4.98 | 0.0020(8) | 5.86(12) | 0.84(20) | 0.0023(6) | |
| 41, 4 − 30, 3, Fu − Fl = 4−3 | 37340.269(4) | 3.4 | 0.77 | 2.38 | 0.0025(4) | 5.78(7) | 0.82(13) | 0.0029(6) | |
| 41, 4 − 30, 3, Fu − Fl = 3−2 | 37340.455(4) | 3.4 | 0.75 | 1.81 |  |
0.0030(3) | 5.78(4) (*) | 0.60(7) | 0.0047(5) |
| 41, 4 − 30, 3, Fu − Fl = 5−4 | 37340.473(4) | 3.4 | 0.82 | 3.10 | |||||
| 51, 5 − 40, 4, Fu − Fl = 5−4 | 42010.978(4) | 4.6 | 1.12 | 2.96 | 0.0017(5) | 5.85(6) | 0.46(19) | 0.0035(10) | |
| 51, 5 − 40, 4, Fu − Fl = 6−5 | 42011.211(4) | 4.6 | 1.16 | 3.65 |  |
0.0028(13) | 5.80(6) (*) | 0.54(15) | 0.0050(10) |
| 51, 5 − 40, 4, Fu − Fl = 4−3 | 42011.215(4) | 4.6 | 1.10 | 2.40 | |||||
| 61, 6 − 50, 5, Fu − Fl = 6−5 | 46545.801(5) | 6.2 | 1.55 | 3.57 | 0.0013(5) | 5.63(11) | 0.48(20) | 0.0026(12) | |
| 61, 6 − 50, 5, Fu − Fl = 7−6 | 46546.045(5) | 6.2 | 1.59 | 4.24 |  |
0.0041(7) | 5.69(6) (*) | 0.54(9) | 0.0071(11) |
| 61, 6 − 50, 5, Fu − Fl = 5−4 | 46546.057(5) | 6.2 | 1.54 | 3.00 | |||||
| CH2CCHCN, μa = 4.07 D | |||||||||
| 61, 5 − 51, 4 | 31615.627(5) | 6.4 | 2.73 | 5.83 | 0.0247(12) | 5.64(1) | 0.80(3) | 0.0289(9) | |
| 71, 7 − 61, 6 | 35379.044(5) | 7.9 | 3.90 | 6.86 | 0.0213(6) | 5.68(1) | 0.77(2) | 0.0259(5) | |
| 70, 7 − 60, 6 | 36064.688(5) | 6.9 | 4.22 | 7.00 | 0.0253(4) | 5.64(1) | 0.69(1) | 0.0347(4) | |
| 72, 6 − 62, 5 | 36140.273(5) | 11.4 | 3.90 | 6.43 | 0.0086(8) | 5.61(3) | 0.90(6) | 0.0090(6) | |
| 72, 5 − 62, 4 | 36222.501(5) | 11.4 | 3.93 | 6.43 | 0.0095(6) | 5.63(2) | 0.90(4) | 0.0099(5) | |
| 71, 6 − 61, 5 | 36878.547(5) | 8.2 | 4.42 | 6.86 | 0.0226(5) | 5.63(1) | 0.70(1) | 0.0300(5) | |
| 81, 8 − 71, 7 | 40425.712(6) | 9.9 | 5.90 | 7.87 | 0.0198(8) | 5.70(1) | 0.60(2) | 0.0311(8) | |
| 80, 8 − 70, 7 | 41187.082(6) | 8.9 | 6.34 | 8.00 | 0.0245(6) | 5.66(1) | 0.59(1) | 0.0388(7) | |
| 82, 7 − 72, 6 | 41297.656(6) | 13.4 | 5.99 | 7.50 | 0.0088(7) | 5.67(2) | 0.65(4) | 0.0128(6) | |
| 82, 6 − 72, 5 | 41420.713(6) | 13.4 | 6.04 | 7.50 | 0.0084(7) | 5.64(2) | 0.65(4) | 0.0121(6) | |
| 81, 7 − 71, 6 | 42138.451(6) | 10.2 | 6.68 | 7.87 | 0.0194(9) | 5.63(1) | 0.52(2) | 0.0348(10) | |
| 91, 9 − 81, 8 | 45469.519(6) | 12.0 | 8.48 | 8.89 | 0.0176(9) | 5.69(1) | 0.56(2) | 0.0293(11) | |
| 90, 9 − 80, 8 | 46297.882(6) | 11.1 | 9.06 | 9.00 | 0.0205(11) | 5.67(1) | 0.55(2) | 0.0352(13) | |
| 92, 8 − 82, 7 | 46452.840(6) | 15.6 | 8.70 | 8.56 | 0.0097(10) | 5.74(2) | 0.66(5) | 0.0138(10) | |
| 92, 7 − 82, 6 | 46628.069(6) | 15.7 | 8.80 | 8.56 | 0.0083(9) | 5.64(2) | 0.60(4) | 0.0129(11) | |
| 91, 8 − 81, 7 | 47394.848(6) | 12.5 | 9.60 | 8.89 | 0.0152(13) | 5.63(2) | 0.62(4) | 0.0232(13) | |
| CH3CCCN, μa = 4.75 D | |||||||||
| E 82 − 72 | 33050.3475(8) | 29.4 | 4.18 | 7.50 | 0.0044(9) | 5.14(9) | 1.41(16) | 0.0029(5) | |
| E 81 − 71 | 33051.3033(9) | 6.9 | 4.39 | 7.88 | 0.0472(8) | 5.79(1) | 0.76(1) | 0.0580(6) | |
| A 80 − 70 | 33051.6219(9) | 7.1 | 4.46 | 8.00 | 0.0485(8) | 5.80(1) | 0.74(1) | 0.0616(6) | |
| E 92 − 82 | 37181.5838(9) | 31.2 | 6.08 | 8.56 | 0.0013(7) | 5.77(10) | 0.64(24) | 0.0020(7) | |
| E 91 − 81 | 37182.659(1) | 8.7 | 6.32 | 8.89 | 0.0421(8) | 5.79(1) | 0.68(1) | 0.0585(7) | |
| A 90 − 80 | 37183.017(1) | 8.9 | 6.40 | 9.00 | 0.0455(8) | 5.79(1) | 0.68(1) | 0.0632(7) | |
| E 102 − 92 | 41312.799(1) | 33.2 | 8.46 | 9.60 | 0.0025(11) | 5.42(8) | 0.55(15) | 0.0031(10) | |
| E 101 − 91 | 41313.994(1) | 10.7 | 8.73 | 9.90 | 0.0372(64) | 5.81(4) | 0.58(10) | 0.0604(9) | |
| A 100 − 90 | 41314.393(1) | 10.9 | 8.81 | 10.0 | 0.0412(51) | 5.83(3) | 0.57(7) | 0.0674(9) | |
| E 112 − 102 | 45443.993(1) | 35.4 | 11.4 | 10.6 | … | … | … | ≤0.0050(10) | |
| E 111 − 101 | 45445.307(1) | 12.9 | 11.7 | 10.9 | 0.0294(42) | 5.80(3) | 0.57(8) | 0.0483(12) | |
| A 110 − 100 | 45445.745(1) | 13.1 | 11.8 | 11.0 | 0.0321(42) | 5.82(3) | 0.62(8) | 0.0487(12) | |
| E 122 − 112 | 49575.162(1) | 37.7 | 14.9 | 11.7 | … | … | … | ≤0.0060(20) | |
| E 121 − 111 | 49576.596(1) | 15.3 | 15.2 | 11.9 | 0.0242(52) | 5.75(5) | 0.69(14) | 0.0328(26) | |
| A 120 − 110 | 49577.073(1) | 15.5 | 15.4 | 12.0 | 0.0269(38) | 5.81(4) | 0.64(8) | 0.0393(26) | |
Notes. (*)LSR velocity corresponds to the strongest hyperfine transition. Numbers in parentheses indicate the uncertainty in units of the last significant digits. For the observational parameters we adopted the uncertainty of the Gaussian fit provided by GILDAS. HCCCH2CN: Spectroscopic line parameters were obtained using MADEX by fitting the rotational lines reported by Demaison et al. (1985) and McNaughton et al. (1988). Dipole moments are from McNaughton et al. (1988). CH2CCHCN: Spectroscopic line parameters were obtained using MADEX by fitting the rotational lines reported by Bouchy et al. (1973) and Schwahn et al. (1986). Dipole moment is from Bouchy et al. (1973). CH3CCCN: Spectroscopic line parameters were obtained using MADEX by fitting the rotational lines reported by Moïses et al. (1982) and Bester et al. (1983). Rotation constants A and Dk have been assumed to be the same as those of CH3CN. Some additional data have been taken from the CDMS (https://cdms.astro.uni-koeln.de/). Dipole moment is from Bester et al. (1984). Note that the E species is 7.8 K above the A species, and energies for the E species are referred to the lowest energy level (1,1).
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