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Table C.1

Transitions of 2-aminopropionitrile observed with the IRAM 30 m telescope toward Sgr B2(N).

Na Transitionb Frequency Unc.c Eld S μ2 σe Commentsf
(MHz) (kHz) (K) (D2) (mK)
(1) (2) (3) (4) (5) (6) (7) (8)
1 132,12–122,11 83676.207 2 26 129.8 16 Blend with U-line
2 122,10–112,9 83682.092 2 24 117.0 16 Strong SO2
3 131,12–121,11 83771.532 2 26 129.8 16 Blend with C2H3N, ν11 = 3, C3H7CN, and U-line
4 128,5–118,4 84232.232 1 37 69.9 19 Blend with CH3OCHO
5 128,4–118,3 84232.354 1 37 69.9 19 Blend with CH3OCHO
6 93,6– 82,6 84831.675 2 14 1.1 22 Blend with U-line
7 140,14–131,13 84833.097 2 27 0.5 22 Blend with U-line
8 141,14–131,13 84834.016 2 27 144.2 22 Blend with U-line
9 140,14–130,13 84835.204 2 27 144.2 22 Blend with U-line
10 141,14–130,13 84836.124 2 27 0.5 22 Blend with U-line
11 133,11–123,10 88137.062 1 28 126.3 19 Candidate detected line
12 123,9–113,8 88651.177 1 25 117.4 17 Strong HCN in absorption
13 124,8–114,7 88659.222 2 26 112.5 17 Strong HCN in absorption
14 132,11–122,10 89261.038 2 28 126.9 16 Blend with CH313CH2CN and C2H5CN, ν13 = 1/ν21 = 1
15 142,13–132,12 89578.953 2 30 140.2 18 Strong C2H5CN and C2H5CN, ν13 = 1/ν21 = 1
16 141,13–131,12 89626.635 2 30 140.2 18 Strong C2H5CN
17 150,15–141,14 90722.899 2 31 0.5 14 Group issue, blend with HNC in absorption?
18 1610,7–169,7⋆ 90723.222 6 65 0.9 14 Group issue, blend with HNC in absorption?
20 151,15–141,14 90723.297 2 31 154.7 14 Group issue, blend with HNC in absorption?
21 150,15–140,14 90723.819 2 31 154.7 14 Group issue, blend with HNC in absorption?
22 1610,7–169,8⋆ 90724.147 6 65 0.2 14 Group issue, blend with HNC in absorption?
24 151,15–140,14 90724.217 2 31 0.5 14 Group issue, blend with HNC in absorption?
25 139,5–129,4⋆ 91181.395 1 45 71.0 25 Noisy
27 134,10–124,9 91298.378 1 30 122.3 25 Blend with CH3NH2, HC13CCN, ν5 = 1/ν7 = 3 , and U-line
28 138,6–128,5 91397.221 1 41 84.7 25 Blend with U-lines
29 138,5–128,4 91397.700 1 41 84.7 25 Blend with U-lines
30 136,8–126,7 92145.504 1 35 107.3 27 Noisy, uncertain baseline
31 75,3– 64,2 92341.054 5 11 0.2 22 Noisy
32 136,7–126,6 92341.178 1 35 107.2 22 Noisy
33 135,9–125,8 92376.802 1 32 115.9 22 Noisy
34 135,8–125,7 94049.350 2 32 116.2 31 Noisy, blend with CH3NH2
35 143,12–133,11 94194.640 2 32 136.7 31 Noisy
36 142,12–132,11 94878.534 2 32 137.0 28 Blend with U-line
37 243,21–243,22 94878.974 6 98 11.6 28 Blend with U-line
38 243,21–242,22 94879.607 6 98 0.3 28 Blend with U-line
39 133,10–123,9 95126.083 1 29 127.1 28 Blend with C2H3CN, ν15 = 1
40 86,3– 84,4 95126.973 11 16 0.2 28 Blend with C2H3CN, ν15 = 1
41 152,14–142,13 95472.758 2 34 150.6 23 Blend with U-line
42 151,14–141,13 95496.037 2 34 150.6 23 Blend with C2H3CN, ν11 = 2
43 160,16–151,15 96612.144 2 36 0.6 29 Blend with CH3OCHO
44 161,16–151,15 96612.315 2 36 165.1 29 Blend with CH3OCHO
45 160,16–150,15 96612.542 2 36 165.1 29 Blend with CH3OCHO
46 161,16–150,15 96612.713 2 36 0.6 29 Blend with CH3OCHO
47 134,9–124,8 96648.400 2 31 124.4 29 Blend with CH3C(O)CH3 and CH3OCHO
48 3717,21–3618,19⋆ 97854.555 6 299 0.5 20 Blend with C2H5OH and U-line
50 144,11–134,10 97854.686 1 34 133.1 20 Blend with C2H5OH and U-line
51 1411,3–1311,2⋆ 97991.385 1 59 56.2 20 Strong CS and CH3OCH3
53 5111,40–5013,37 98133.740 10 481 1.6 20 Blend with CH313CH2CN
54 1410,5–1310,4⋆ 98135.123 1 54 71.9 20 Blend with CH313CH2CN
56 149,6–139,5⋆ 98328.023 1 49 86.1 18 Candidate detected group, uncertain baseline
58 148,7–138,6 98598.677 1 45 98.9 18 Strong C2H5CN, ν13 = 1/ν21 = 1, CH3C(O)CH3, and C2H5CN, ν20 = 1
59 148,6–138,5 98600.317 1 45 98.9 18 Strong C2H5CN, ν13 = 1/ν21 = 1, CH3C(O)CH3, and C2H5CN, ν20 = 1
60 147,8–137,7 98990.437 1 42 110.1 18 Blend with U-line
61 147,7–137,6 99024.247 1 42 110.1 19 Strong Hα recombination line
62 146,9–136,8 99474.544 1 39 119.8 19 Blend with CH3C(O)CH3, νt = 1, CH3C13CH, and U-line
63 145,10–135,9 99501.397 1 37 127.7 19 Blend with C2H5CN
64 146,8–136,7 99906.338 1 39 119.8 14 Blend with HCC13CN, ν7 = 1
65 153,13–143,12 100180.686 2 37 147.1 14 Blend with U-line
66 1811,8–1810,8⋆ 100182.883 6 81 1.0 14 Blend with U-line
68 1811,8–1810,9⋆ 100183.254 6 81 0.3 14 Blend with U-line
70 152,13–142,12 100572.114 2 37 147.2 20 Blend with NH2CHO, HC13CCN, ν5 = 1/ν7 = 3, and
CH3C(O)CH3, νt = 1
71 143,11–133,10 101132.384 2 34 136.4 21 Blend with CH3C(O)CH3, νt = 1, C2H5OH, and U-line
72 162,15–152,14 101362.165 2 39 161.0 16 Candidate detected line, uncertain baseline
73 161,15–151,14 101373.308 2 39 161.0 16 Blend with CH3OCHO and C2H5CN, ν13 = 1/ν21 = 1, uncertain
baseline
74 4814,35–4716,32 101374.224 8 443 2.0 16 Blend with CH3OCHO and C2H5CN, ν13 = 1/ν21 = 1, uncertain
baseline
75 145,9–135,8 102276.096 2 37 128.3 30 Noisy, blend with C2H5OH
76 170,17–161,16⋆ 102501.056 2 40 0.6 30 Blend with C2H5OH, CH3CCH, CH3OCHO, νt = 1, and
CH313CCH
78 170,17–160,16⋆ 102501.227 2 40 175.5 30 Blend with C2H5OH, CH3CCH, CH3OCHO, νt = 1, and
CH313CCH
80 154,12–144,11 104246.661 2 39 143.8 48 Blend with SO2 and C2H5OCHO
81 144,10–134,9 104292.014 1 35 135.7 48 Blend with 13CH3OH and CH3OCHO
82 2812,16–2811,17 104293.171 6 166 0.6 48 Blend with 13CH3OH and CH3OCHO
83 1512,3–1412,2⋆ 104955.530 1 69 56.6 28 Strong C2H3CN
85 1511,5–1411,4⋆ 105091.282 1 63 72.7 28 Group issue, blend with U-line and C2H3CN, ν11 = 2,
uncertain baseline
87 1510,6–1410,5⋆ 105267.568 1 58 87.4 28 Blend with U-line
89 159,7–149,6 105505.313 1 54 100.7 37 Candidate detected line, noisy
90 159,6–149,5 105505.510 1 54 100.7 37 Candidate detected line, noisy
91 158,8–148,7 105840.034 1 50 112.6 43 Noisy
92 158,7–148,6 105845.040 1 50 112.6 43 Noisy
93 163,14–153,13 106119.548 2 42 157.5 25 Candidate detected line, noisy
94 208,13–206,14 106313.344 16 81 2.7 25 Blend with U-line and NH213CHO, ν12 = 1
95 157,9–147,8 106313.995 1 47 123.0 25 Blend with U-line and NH213CHO, ν12 = 1
96 162,14–152,13 106333.641 2 42 157.6 25 Blend with C2H5CN, ν13 = 1/ν21 = 1
97 4916,33–4915,34 106336.541 6 472 1.2 25 Blend with C2H5CN, ν13 = 1/ν21 = 1
98 157,8–147,7 106398.557 1 47 123.0 25 Blend with U-line and C2H5OCHO
99 155,11–145,10 106503.501 1 41 139.1 25 Blend with U-line
100 153,12–143,11 106784.068 2 39 145.7 34 Strong OC34S
101 156,10–146,9 106805.353 1 44 132.0 34 Blend with U-line and H13CCCN, ν5 = 1/ν7 = 3
102 5814,45–5716,42 107248.283 9 625 2.0 24 Strong C2H5CN, ν13 = 1/ν21 = 1
103 172,16–162,15 107249.573 2 44 171.4 24 Strong C2H5CN, ν13 = 1/ν21 = 1
104 171,16–161,15 107254.820 2 44 171.4 24 Strong C2H5CN, ν13 = 1/ν21 = 1
105 156,9–146,8 107674.692 2 44 132.1 24 Blend with C2H5CN, ν20 = 1
106 368,28–368,29 108387.475 5 241 24.2 48 Group issue?, blend with CH3C(O)CH3, 13CH3OH, and C2H5OH
107 180,18–171,17⋆ 108389.721 2 45 0.6 48 Group issue?, blend with CH3C(O)CH3, 13CH3OH, and C2H5OH
109 180,18–170,17⋆ 108389.794 2 45 186.0 48 Group issue?, blend with CH3C(O)CH3, 13CH3OH, and C2H5OH
111 164,13–154,12 110490.325 2 44 154.3 32 Blend with CH3C(O)CH3
112 155,10–145,9 110619.212 2 42 140.5 32 Blend with H3C13CN, ν8 = 1, C3H7CN, and U-line
113 154,11–144,10 111481.907 2 40 146.4 35 Noisy
114 4320,24–4221,22⋆ 111917.941 9 406 0.5 29 Blend with U-line
116 1613,3–1513,2⋆ 111918.685 1 79 57.0 29 Blend with U-line
118 3213,19–3212,21 111920.127 6 212 1.9 29 Blend with U-line
119 173,15–163,14 112029.767 2 47 167.8 29 Candidate detected line, partial blend with U-line
120 1612,4–1512,3⋆ 112048.455 1 74 73.4 42 Blend with C2H5OH and C2H5CN, ν13 = 1/ν21 = 1
122 172,15–162,14 112142.881 2 47 167.9 42 Blend with 13CH3OH
123 1611,6–1511,5⋆ 112212.410 1 68 88.5 42 Blend with CH2(OH)CHO
125 163,13–153,12 112270.581 2 44 155.3 42 Blend with C2H5OH and CH3NH2
126 1610,7–1510,6⋆ 112426.272 1 63 102.3 31 Group issue?, noisy, partial blend with t-HCOOH and C2H5CN
128 169,8–159,7 112716.126 1 59 114.7 31 Noisy
129 169,7–159,6 112716.787 1 59 114.7 31 Noisy
130 4013,27–4012,29 113122.216 4 313 1.6 40 Strong CN in absorption
131 113,9–102,9 113123.287 4 19 0.8 40 Strong CN in absorption
132 168,9–158,8 113124.459 1 55 125.8 40 Strong CN in absorption
133 181,17–172,16 113134.125 2 49 0.6 40 Strong CN in absorption
134 182,17–172,16 113136.160 2 49 181.8 40 Strong CN in absorption
135 168,8–158,7 113138.350 1 55 125.8 40 Strong CN in absorption
136 181,17–171,16 113138.596 2 49 181.8 40 Strong CN in absorption
137 182,17–171,16 113140.632 2 49 0.6 40 Strong CN in absorption
138 165,12–155,11 113351.780 1 46 150.3 28 Noisy, uncertain baseline
139 167,10–157,9 113678.285 2 52 135.6 34 Blend with 13CH3CH2CN, U-line, and CH2(OH)CHO
140 167,9–157,8 113872.664 2 52 135.6 34 Blend with U-line and C2H5OH
141 283,25–283,26⋆ 114103.638 7 130 11.9 33 Blend with H13CC13CN, CH2CH13CN, and C2H5CN, ν13 = 1/ν21 = 1
143 166,11–156,10 114104.283 2 49 144.0 33 Blend with H13CC13CN, CH2CH13CN, and C2H5CN, ν13 = 1/ν21 = 1
144 284,25–283,26⋆ 114104.436 7 130 0.3 33 Blend with H13CC13CN, CH2CH13CN, and C2H5CN, ν13 = 1/ν21 = 1
146 190,19–181,18⋆ 114278.164 2 50 0.7 33 Strong C2H3CN, ν11 = 1
148 190,19–180,18⋆ 114278.195 2 50 196.5 33 Strong C2H3CN, ν11 = 1
150 5614,43–5516,40 115700.229 8 586 2.2 79 Blend with CH213CHCN
151 166,10–156,9 115701.658 2 49 144.2 79 Blend with CH213CHCN
152 215,17–205,16 145123.473 2 77 203.2 25 Strong CH3OH
153 205,15–195,14 147479.979 2 72 194.8 31 Strong CH3CN, ν8 = 1 and 13CH3CH2CN
154 2113,9–2013,8⋆ 147535.354 2 110 135.9 31 Strong CH3OCHO and CH3CN, ν8 = 1
156 2112,10–2012,9⋆ 147825.170 2 104 148.3 31 Strong C2H3CN, ν15 = 1
158 251,24–242,23⋆ 154338.749 2 93 0.8 112 Blend with NH213CHO and C2H5CN, ν20 = 1
160 251,24–241,23⋆ 154338.764 2 93 254.9 112 Blend with NH213CHO and C2H5CN, ν20 = 1
162 2214,8–2114,7⋆ 154453.622 2 123 137.3 112 Strong CH3OCH3
164 288,20–279,18 154455.607 9 148 0.9 112 Strong CH3OCH3
165 2213,10–2113,9⋆ 154719.395 2 117 150.2 112 Strong C2H3CN
167 2310,14–2210,13 163482.214 2 109 195.6 38 Noisy, blend with 13CH3CH2CN and C2H3CN
168 438,35–429,33 163485.530 4 331 0.7 38 Noisy, blend with 13CH3CH2CN and C2H3CN
169 2310,13–2210,12 163516.006 2 109 195.6 38 Blend with CH3OCHO and C2H5OH
170 6617,49–6616,50 163516.472 8 825 1.5 38 Blend with CH3OCHO and C2H5OH
171 249,15–239,14 172528.863 2 112 216.3 44 Strong HC13CCN, ν7 = 1 and HC13CCN, ν6 = 1
172 184,14–173,14 176020.163 5 55 1.6 365 Noisy, blend with CH2CH13CN and HNCO, ν5 = 1
173 7121,51–7023,48 176022.135 31 967 3.4 365 Noisy, blend with CH2CH13CN and HNCO, ν5 = 1
174 2514,12–2414,11⋆ 176024.611 2 146 180.0 365 Noisy, blend with CH2CH13CN and HNCO, ν5 = 1
176 6517,49–6516,50 176029.258 6 794 1.4 365 Noisy, blend with CH2CH13CN and HNCO, ν5 = 1
177 4820,29–4819,29 176417.411 7 481 2.9 365 Noisy, blend with NH2CHO and H13CCCN, ν5 = 1/ν7 = 3
178 4820,28–4819,29 176417.822 7 481 1.0 365 Noisy, blend with NH2CHO and H13CCCN, ν5 = 1/ν7 = 3
179 2513,13–2413,12⋆ 176418.067 2 140 191.3 365 Noisy, blend with NH2CHO and H13CCCN, ν5 = 1/ν7 = 3
181 4820,29–4819,30 176422.486 7 481 1.0 365 Noisy, blend with NH2CHO and H13CCCN, ν5 = 1/ν7 = 3
182 4820,28–4819,30 176422.897 7 481 2.9 365 Noisy, blend with NH2CHO and H13CCCN, ν5 = 1/ν7 = 3

Notes. The horizontal lines mark discontinuities in the observed frequency coverage. Only the transitions associated with a modeled line stronger than 20 mK are listed.

(a)

Numbering of the observed transitions associated with a modeled line stronger than 20 mK.

(b)

Transitions marked with a ⋆ are double with a frequency difference less than 0.1 MHz. The quantum numbers of the second one are not shown.

(c)

Frequency uncertainty.

(d)

Lower energy level in temperature units (El / kB).

(e)

Calculated rms noise level in Tmb scale.

(f)

Group means a group of transitions that are blended together. Issue means that the modeled transition or group of transitions may be inconsistent with the observed spectrum.

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