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Table 3

Lines detected in the survey of IRC+10216.

Frequency Species Transition V exp S ν σ a
(MHz) (km s-1) (mJy) (mJy km s-1) (mJy km s-1) Notes
18 048.0 HC7N J = 16−15 14.2 ± 0.1 33.6 862.5 11.6 NS
18 154.9 SiS J = 1−0 14.5 ± 0.0 301.2 3928.1 11.6 1
18 196.2 HC3N J = 2−1 14.1 ± 0.1 275.0 5759.1 13.8
18 343.1 c-C3H2 JKa,Kc=11,0–10,1 14.0 ± 0.0 82.1 1652.4 13.8
18 447.6 HCC13CCCN J = 7−6 6.5 92.3 14.8 N
18 454.5 HCCCC13CN J = 7−6 6.5 <631.6 14.8 2, N
18 458.0 U 9.9 <631.6 13.8
18 638.6 HC5N J = 7−6 14.0 ± 0.1 154.1 3271.4 16.9 NS
19 015.1 C4H N = 2−1, J = 5/2−3/2 13.9 ± 0.3 17.2 456.1 14.8 NS
19 176.0 HC7N J = 17−16 13.8 ± 0.1 45.7 1030.2 14.8 NS
19 780.8 C3N N = 2−1, J = 5/2−3/2 14.0 ± 0.2 34.1 773.6 17.7
19 800.1 C3N N = 2−1, J = 3/2−1/2 12.4 ± 1.0 16.6 272.7 17.7
20 303.9 HC7N J = 18−17 14.2 ± 0.1 60.9 1325.5 20.1 NS
20 927.3 C6H() J = 15/2−13/2, l = f 14.7 ± 0.2 11.4 237.8 15.4 N
20 956.2 C6H() J = 15/2−13/2, l = e 13.4 ± 0.2 11.3 217.9 15.4 N
21 090.8 HCCCC13CN J = 8−7 17.8 ± 1.0 5.7 129.3 11.8 N
21 279.2 HCC13CCCN J = 8−7 5.0 90.5 14.2 N
21 281.8 HCCC13CCN J = 8−7 5.0 88.2 14.2 N
21 301.3 HC5N J = 8−7 13.8 ± 0.0 228.4 4963.3 11.8 NS
21 431.9 HC7N J = 19−18 13.8 ± 0.0 64.2 1459.3 13.0 NS
21 458.8 U 4.6 107.2 13.0
21 472.7 SiC4 J = 7−6 13.7 ± 0.2 6.8 142.0 13.0 N
21 480.8 l-C5H() J = 9/2−7/2, F = 5−4, l = e 13.3 ± 2.2 12.1 242.5 14.2 3, NS
21 481.3 l-C5H() J = 9/2−7/2, F = 4−3, l = e
21 484.7 l-C5H() J = 9/2−7/2, F = 5−4, l = f 15.4 ± 0.4 10.0 194.6 14.2 3, NS
21 485.1 l-C5H() J = 9/2−7/2, F = 4−3, l = f
21 498.2 HC9N J = 37−36 14.5 ± 0.2 11.9 254.0 13.0 NS
21 628.5 l-C5H() J = 9/2−7/2, F = 4−3, l = f 16.2 ± 0.3 8.8 241.7 13.0 3, N
21 628.6 l-C5H() J = 9/2−7/2, F = 4−3, l = e
21 629.6 l-C5H() J = 9/2−7/2, F = 5−4, l = f
21 629.7 l-C5H() J = 9/2−7/2, F = 5−4, l = e
21 706.6 C8H() J = 37/2−35/2, F = 19−18, l = e 14.2 ± 2.1 6.1 125.1 13.0 3, N
21 706.6 C8H() J = 37/2−35/2, F = 18−17, l = e
21 706.8 C8H() J = 37/2−35/2, F = 19−18, l = f
21 706.8 C8H() J = 37/2−35/2, F = 18−17, l = f
22 029.7 C6H− J = 8−7 14.2 ± 0.3 6.4 175.6 14.2 NS
22 079.2 HC9N J = 38−37 13.9 ± 0.2 10.3 187.0 14.2 NS
22 304.9 U 7.4 182.1 11.8
22 323.3 U 4.4 85.3 11.8
22 344.0 C2S JN = 21−10 13.7 ± 0.1 15.4 318.1 11.8 NS
22 559.9 HC7N J = 20−19 13.9 ± 0.0 75.1 1501.0 11.8 NS
22 660.2 HC9N J = 39−38 13.9 ± 0.2 9.1 172.8 13.0
22 879.9 C8H(Π3/2) J = 39/2−37/2, F = 20−19, l = e 13.6 ± 0.3 5.2 115.2 11.8 3
22 879.9 C8H(Π3/2) J = 39/2−37/2, F = 19−18, l = e
22 880.1 C8H(Π3/2) J = 39/2−37/2, F = 20−19, l = f
22 880.1 C8H(Π3/2) J = 39/2−37/2, F = 19−18, l = f
23 123.0 C3S J = 4−3 13.9 ± 0.1 10.5 237.1 11.8
23 241.2 HC9N J = 40−39 15.9 ± 0.1 9.0 178.9 13.0
23 340.1 H13CCCCCN J = 9−8 13.2 ± 0.3 7.7 136.5 13.0 N
23 565.2 C6H() J = 17/2−15/2, l = e 29.5 768.1 14.2 3, NS
23 567.2 C6H() J = 17/2−15/2, l = f
23 600.2 SiC2 JKa,Kc = 10,1−00,0 13.9 ± 0.0 55.9 1185.0 13.0
23 687.9 HC7N J = 21−20 13.9 ± 0.1 93.6 1922.2 13.0
23 694.5 NH3 (J,K) = (1, 1) 14.5 ± 0.3 19.8 474.4 13.0
23 718.3 HC13CCCCN J = 9−8 <20.7 <693.5 13.0 4
23 719.4 C6H() J = 17/2−15/2, l = f <20.7 <693.5 13.0 N
23 722.6 NH3 (J,K) = (2, 2) 13.9 ± 0.1 17.6 345.9 13.0
23 727.2 HCCCC13CN J = 9−8 15.1 ± 0.5 9.8 138.6 13.0
23 732.7 U 5.5 135.1 11.8
23 748.6 C6H() J = 17/2−15/2, l = e 13.9 ± 0.1 16.7 277.3 13.0 N
23 822.3 HC9N J = 41−40 13.9 ± 0.2 10.6 217.2 13.0
23 846.3 U 5.5 118.1 11.8
23 870.1 NH3 (J,K) = (3, 3) 13.4 ± 0.2 16.2 338.8 11.8 NS
23 875.1 MgNC N = 2−1, J = 5/2−3/2 13.6 ± 0.2 10.2 171.0 11.8 N
23 939.0 HCC13CCCN J = 9−8 13.4 ± 0.2 10.7 145.9 13.0
23 942.0 HCCC13CCN J = 9−8 13.4 ± 0.3 8.1 175.1 13.0
23 963.9 HC5N J = 9−8 13.8 ± 0.0 366.8 7494.0 13.0
24 053.2 C8H() J = 41/2−39/2, F = 21−20, l = e 16.6 ± 0.5 6.1 209.1 11.8 3, N
24 053.2 C8H() J = 41/2−39/2, F = 20−19, l = e
24 053.5 C8H() J = 41/2−39/2, F = 21−20, l = f
24 053.5 C8H() J = 41/2−39/2, F = 20−19, l = f
24 139.4 NH3 (J,K) = (4, 4) 6.8 <125.0 11.8 5, NS
24 403.3 HC9N J = 42−41 14.3 ± 0.1 13.5 287.3 11.8
24 540.2 SiC4 J = 8−7 13.5 ± 0.1 14.2 282.8 15.4 N
24 783.4 C6H− J = 9−8 13.8 ± 0.1 12.3 253.6 11.8 N
24 815.9 HC7N J = 22−21 14.0 ± 0.0 97.7 1950.1 13.0 NS
24 862.7 U 5.1 112.5 11.8
24 901.4 U 7.9 146.4 11.8
24 984.3 HC9N J = 43−42 14.1 ± 0.1 13.5 245.6 11.8
24 991.3 SiC2 JKa,Kc = 82,6−82,7 13.7 ± 0.1 13.7 268.5 11.8
25 056.0 NH3 (J,K) = (6, 6) 5.5 95.2 11.8 NS
25 094.3 U 9.2 158.5 13.0
25 111.8 U 8.7 191.5 13.0
25 226.5 C8H() J = 43/2−41/2, F = 22−21, l = e 16.1 ± 0.3 10.6 249.2 13.0 3, N
25 226.5 C8H() J = 43/2−41/2, F = 21−20, l = e
25 226.8 C8H() J = 43/2−41/2, F = 22−21, l = f
25 226.8 C8H() J = 43/2−41/2, F = 21−20, l = f
25 565.3 HC9N J = 44−43 13.8 ± 0.2 13.0 245.6 13.0 N
25 933.4 H13CCCCCN J = 10−9 14.5 ± 0.2 9.7 189.4 15.4 N
25 943.9 HC7N J = 23−22 14.1 ± 0.0 90.8 1998.5 15.4 NS
25 976.2 U 6.4 162.2 17.7
25 992.8 U 7.4 246.4 17.7
26 146.3 HC9N J = 45−44 13.5 ± 0.2 12.7 216.1 17.7 N
26 254.8 l-C5H() J = 11/2−9/2, F = 6−5, l = e 13.1 ± 0.3 23.0 377.4 27.2 3, N
26 255.2 l-C5H() J = 11/2−9/2, F = 5−4, l = e
26 258.7 l-C5H() J = 11/2−9/2, F = 6−5, l = f 15.1 ± 0.4 24.2 477.6 27.2 3, N
26 259.1 l-C5H() J = 11/2−9/2, F = 5−4, l = f

Notes. (1) The blue-shifted component of the SiS J = 1−0 line is stronger than the red-shifted one due to maser amplification (18 154.9 MHz; Henkel et al. 1983). The peak intensity of its presumably also inverted red-shifted component is 198.5 mJy. (2) Blend with a U line at 18 458.0 MHz. (3) The hyperfine structure is not resolved. (4) Blend with C6H at 23 719.4 MHz. (5) NH3 (4, 4) at 24 139.4 MHz seems to be blended (see Fig. B.2). (N) Transitions that are detected for the first time outside the solar system are marked with “N”. (NS) Transitions that are detected for the first time toward the source are marked with “NS”.

(a)

The rms noise levels given here are for ~28 km s-1 wide channels.

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