Table 2
Lines detected in the survey of Orion-KL.
| Rest frequency | Transition | Eu/k | |
| (MHz) | (K) | Notes | |
|
|
|||
| 17 901.6 | H120ε | ||
| 17 978.5 | H127ζ | ||
| 17 992.6 | H71α | ||
| 17 999.9 | He71α | 1 | |
| 18 001.5 | C71α | 1 | |
| 18 017.3 | NH3 (7, 3) | 750 | |
| 18 019.0 | H139θ | ||
| 18 045.9 | H89β | ||
| 18 053.2 | He89β | ||
| 18 123.4 | H133η | ||
| 18 196.2 | HC3N (2–1) | 1 | |
| 18 241.7 | H111δ | ||
| 18 327.5 | H101γ | ||
| 18 335.0 | He101γ | ||
| 18 347.5 | H119ε | ||
| 18 391.5 | NH3 (6, 1) | 593 | |
| 18 398.0 | CH3CN (10–00) | 1 | 2 |
| 18 400.1 | H126ζ | 2, 3 | |
| 18 402.7 | H138θ | 3 | |
| 18 499.3 | NH3 (9, 6) | 1091 | |
| 18 528.0 | H132η | ||
| 18 661.1 | H88β | ||
| 18 668.7 | He88β | ||
| 18 734.9 | H110δ | ||
| 18 742.5 | He110δ | ||
| 18 769.2 | H70α | ||
| 18 776.8 | He70α | 1 | |
| 18 778.5 | C70α | 1 | |
| 18 807.9 | NH2D (31,3s–30,3a) | 94 | 4 |
| 18 808.4 | H118ε | 4 | |
| 18 808.5 | NH3 (8, 5) | 893 | 4 |
| 18 835.1 | H125ζ | ||
| 18 859.0 | H142ι | ||
| 18 874.8 | H100γ | ||
| 18 882.5 | He100γ | ||
| 18 884.6 | NH3 (6, 2) | 578 | |
| 18 944.7 | H131η | ||
| 19 218.4 | NH3 (7, 4) | 713 | |
| 19 246.1 | H109δ | ||
| 19 283.8 | H124ζ | 5 | |
| 19 284.8 | H117ε | 5 | |
| 19 304.7 | H87β | ||
| 19 312.6 | He87β | ||
| 19 374.0 | H130η | ||
| 19 444.0 | H99γ | ||
| 19 451.9 | He99γ | ||
| 19 591.1 | H69α | ||
| 19 599.1 | He69α | 1 | |
| 19 600.9 | C69α | 1 | |
| 19 621.6 | H135θ | ||
| 19 654.0 | H140ι | ||
| 19 757.5 | NH3 (6, 3) | 551 | |
| 19 776.0 | H108δ | 6 | |
| 19 777.4 | H116ε | 6 | |
| 19 816.4 | H129η | ||
| 19 838.3 | NH3 (5, 1) | 423 | |
| 19 967.4 | CH3OH (21 − 30 E) | 28 | |
| 19 978.2 | H86β | ||
| 19 986.3 | He86β | ||
| 20 036.3 | H98γ | ||
| 20 044.5 | He98γ | ||
| 20 051.7 | H134θ | ||
| 20 171.1 | CH3OH (111 − 102 A+) | 166 | |
| 20 225.1 | H122ζ | ||
| 20 272.4 | H128η | ||
| 20 287.0 | H115ε | ||
| 20 325.5 | H107δ | ||
| 20 333.8 | He107δ | 7 | |
| 20 335.4 | SO2 (123,9 − 132,12) | 94 | 7, N |
| 20 346.8 | CH6-185 E) | 534 | N |
| 20 371.5 | NH3 (5, 2) | 407 | |
| 20 460.0 | HDO (32,1 − 41,4) | 226 | 8 |
| 20 461.8 | H68α | 8 | |
| 20 470.1 | He68α | 1 | |
| 20 472.0 | C68α | 1 | |
| 20 494.5 | H133θ | 9 | |
| 20 494.3 | H138ι | 9 | |
| 20 653.0 | H97γ | ||
| 20 683.3 | H85β | ||
| 20 691.8 | He85β | ||
| 20 718.7 | H121ζ | 10 | |
| 20 719.2 | NH3 (8, 6) | 835 | 10 |
| 20 735.4 | NH3 (9, 7) | 1023 | |
| 20 804.9 | NH3 (7, 5) | 666 | |
| 20 814.3 | H114ε | ||
| 20 895.6 | H106δ | ||
| 20 908.9 | CH3OH (16-4 − 15-5 E) | 403 | |
| 20 932.5 | H137ι | ||
| 20 950.5 | H132θ | ||
| 20 970.7 | CH3OH vt = 1 (101 − 112 A+) | 452 | |
| 20 994.7 | NH3 (6, 4) | 514 | |
| 21 070.7 | NH3 (11, 9) | 1450 | |
| 21 134.3 | NH3 (4, 1) | 280 | |
| 21 227.2 | H126η | 11 | |
| 21 228.6 | H120ζ | 11 | |
| 21 285.3 | NH3 (5, 3) | 380 | |
| 21 295.2 | H96γ | ||
| 21 301.3 | HC5N (8 − 7) | 2 | |
| 21 303.9 | He96γ | ||
| 21 359.9 | H113ε | ||
| 21 383.2 | H136ι | 12 | |
| 21 384.8 | H67α | 12 | |
| 21 393.5 | He67α | 1 | |
| 21 395.5 | C67α | 1 | |
| 21 420.0 | H131θ | 13 | |
| 21 422.1 | H84β | 13 | |
| 21 430.8 | He84β | ||
| 21 487.2 | H105δ | ||
| 21 550.3 | CH3OH vt = 1 (122 − 111 A−) | 479 | |
| 21 637.9 | 15NH3 (4, 3) | 240 | |
| 21 703.4 | NH3 (4, 2) | 264 | |
| 21 784.0 | 15NH3 (3, 2) | 152 | N |
| 21 903.8 | H130θ | ||
| 21 924.8 | H112ε | ||
| 21 964.3 | H95γ | ||
| 21 973.3 | He95γ | ||
| 21 981.6 | HNCO (10,1–00,0) | 1 | |
| 22 044.2 | 15NH3 (2, 1) | 82 | N |
| 22 101.4 | H104δ | ||
| 22 196.5 | H83β | ||
| 22 205.5 | He83β | ||
| 22 235.1 | H2O (61,6–52,3) | 643 | 14 |
| 22 299.6 | H118ζ | ||
| 22 324.4 | H134ι | ||
| 22 364.2 | H66α | ||
| 22 373.3 | He66α | 1 | |
| 22 375.3 | C66α | 1 | |
| 22 402.1 | H129θ | ||
| 22 509.8 | H111ε | ||
| 22 624.9 | 15NH3 (1, 1) | 24 | |
| 22 649.8 | 15NH3 (2, 2) | 66 | |
| 22 653.0 | NH3 (5, 4) | 343 | |
| 22 661.8 | H94γ | ||
| 22 671.0 | He94γ | ||
| 22 688.3 | NH3 (4, 3) | 238 | |
| 22 732.5 | NH3 (6, 5) | 467 | |
| 22 739.2 | H103δ | ||
| 22 748.5 | He103δ | ||
| 22 775.1 | H123η | ||
| 22 789.4 | 15NH3 (3, 3) | 126 | |
| 22 815.7 | H133ι | ||
| 22 827.7 | CH3OCHO (21,2–11,1 E) | 2 | 15 |
| 22 828.1 | CH3OCHO (21,2–11,1 A) | 2 | 15 |
| 22 834.2 | NH3 (3, 2) | 150 | |
| 22 862.3 | H117ζ | ||
| 22 915.8 | H128θ | ||
| 22 925.0 | NH3 (7, 6) | 608 | |
| 22 965.6 | H2CO (92,7–92,8) | 205 | N |
| 23 008.6 | H82β | ||
| 23 018.0 | He82β | ||
| 23 046.0 | 15NH3 (4, 4) | 204 | |
| 23 098.8 | NH3 (2, 1) | 80 | |
| 23 115.9 | H110ε | ||
| 23 121.0 | CH3OH (92–101 A+) | 142 | |
| 23 145.4 | 13CH3OH (40–31 E) | 36 | N |
| 23 232.3 | NH3 (8, 7) | 767 | |
| 23 321.6 | H132ι | 16 | |
| 23 324.4 | H122η | 16 | |
| 23 347.0 | CH3OH (71–71 A+) | 80 | N |
| 23 389.1 | H93γ | 17 | |
| 23 390.0 | CH3OCH3 (123,10–114,7 AA) | 83.7 | 17, N |
| 23 393.1 | CH3OCH3 (123,10–114,7 EE) | 83.7 | N |
| 23 398.6 | He93γ | 18 | |
| 23 401.8 | H102δ | 18, 19 | |
| 23 404.3 | H65α | 19 | |
| 23 411.4 | He102δ | 20 | |
| 23 413.8 | He65α | 1, 20, 21 | |
| 23 414.2 | SO2 (52,4–61,5) | 24 | N, 21 |
| 23 416.0 | C65α | 1 | |
| 23 422.0 | 15NH3 (5, 5) | 300 | |
| 23 444.0 | H116ζ | 22 | |
| 23 444.8 | CH3OH (101–92 A−) | 143 | 22 |
| 23 445.3 | H127θ | 22 | |
| 23 518.2 | H136κ | ||
| 23 657.6 | NH3 (9, 8) | 943 | |
| 23 694.5 | NH3 (1, 1) | 23 | |
| 23 722.6 | NH3 (2, 2) | 64 | |
| 23 743.8 | H109ε | ||
| 23 842.5 | H131ι | ||
| 23 860.9 | H81β | ||
| 23 870.1 | NH3 (3, 3) | 124 | 23 |
| 23 870.6 | He81β | 23 | |
| 23 891.6 | H121η | ||
| 23 922.3 | 15NH3 (6, 6) | 414 | |
| 23 963.9 | HC5N (9–8) | 6 | |
| 23 991.2 | H126θ | ||
| 24 039.6 | SO2 (215,17–224,18) | 274 | |
| 24 045.6 | H115ζ | ||
| 24 083.5 | SO2 (82,6–91,9) | 43 | |
| 24 090.4 | H101δ | ||
| 24 100.2 | He101δ | ||
| 24 139.4 | NH3 (4, 4) | 201 | |
| 24 147.9 | H92γ | ||
| 24 157.7 | He92γ | ||
| 24 205.4 | NH3 (10,9) | 1138 | |
| 24 296.5 | CH3OCHO (20,2–10,1 E) | 2 | |
| 24 298.5 | CH3OCHO (20,2–10,1 A) | 2 | |
| 24 325.9 | OCS (2–1) | 2 | |
| 24 379.1 | H130ι | ||
| 24 394.8 | H108ε | ||
| 24 477.3 | H120η | ||
| 24 509.9 | H64α | ||
| 24 519.9 | He64α | 1 | |
| 24 522.1 | C64α | 1 | |
| 24 532.9 | NH3 (5, 5) | 295 | |
| 24 625.2 | CH3OCHO (123,9–123,10 E) | 53 | N |
| 24 649.4 | CH3OCHO (123,9–123,10 A) | 53 | N |
| 24 668.0 | H114ζ | ||
| 24 755.7 | H80β | ||
| 24 765.8 | He80β | ||
| 24 806.3 | H100δ | ||
| 24 816.4 | He100δ | ||
| 24 882.0 | NH3 (11, 10) | 1350 | N |
| 24 928.7 | CH3OH (32–31 E) | 36 | 24 |
| 24 931.9 | H129ι | 24 | |
| 24 933.5 | CH3OH (42–41 E) | 45 | |
| 24 934.4 | CH3OH (22–21 E) | 29 | |
| 24 939.8 | H91γ | ||
| 24 950.0 | He91γ | ||
| 24 959.1 | CH3OH (52–51 E) | 57 | |
| 25 018.1 | CH3OH (62–61 E) | 71 | |
| 25 023.8 | NH2D (41,4a–40,4s) | 152 | |
| 25 056.0 | NH3 (6, 6) | 408 | |
| 25 069.7 | H107ε | ||
| 25 079.9 | He107ε | 25 | |
| 25 082.3 | H119η | 25 | |
| 25 124.9 | CH3OH (72–71 E) | 87 | |
| 25 134.9 | H124θ | ||
| 25 294.4 | CH3OH (82–81 E) | 106 | |
| 25 312.0 | H113ζ | ||
| 25 322.8 | CH3OH vt = 1 (99,1–98,2 A) | 788 | 26, 27, N |
| CH3OH vt = 1 (99,0–98,1 A) | 788 | 26, 27, N | |
| 25 323.5 | 15NH3 (8,8) | 688 | 27, N |
| 25 392.8 | SO2 (81,7–72,6) | 37 | N |
| 25 497.5 | CH3OCHO (205,15–205,16 E) | 143 | N |
| 25 501.5 | H128ι | ||
| 25 530.7 | CH3OCHO (205,15–205,16 A) | 143 | N |
| 25 541.4 | CH3OH (92,7–91,8 E) | 127 | |
| 25 550.8 | H99δ | ||
| 25 561.2 | He99δ | ||
| 25 609.7 | H136λ | ||
| 25 642.8 | H132κ | ||
| 25 686.3 | H63α | ||
| 25 695.9 | H79β | 28 | |
| 25 696.7 | He63α | 1, 28 | |
| 25 699.1 | C63α | 1 | |
| 25 706.4 | He79β | 29 | |
| 25 707.4 | H118η | 29 | |
| 25 715.1 | NH3 (7, 7) | 539 | |
| 25 730.2 | CH3OCHO (164,12–164,13 E) | 93 | N |
| 25 734.1 | H123θ | ||
| 25 759.8 | CH3OCHO (164,12–164,13 A) | 93 | N |
| 25 766.8 | H90γ | 30 | |
| 25 769.8 | H106ε | 30 | |
| 25 777.3 | He90γ | ||
| 25 787.1 | CH3OH (262–261 E) | 836 | N |
| 25 878.3 | CH3OH (102–101 E) | 150 | |
| 25 978.7 | H112ζ | ||
| 26 044.8 | CH3OCHO (21,1–11,0 E) | 3 | |
| 26 048.5 | CH3OCHO (21,1–11,0 A) | 3 | |
| 26 120.6 | CH3OH vt = 1 (101-112 A+) | 453 | N |
| 26 124.6 | CH3CH2CN (31,3 − 21,2) | 4 | N |
Notes. (1) Cα lines all blended with nearby Heα lines in our band. (2) CH3CN (10 − 00) at 18 398.0 MHz is blended with H126ζ at 18 400.1 MHz. (3) H126ζ at 18 400.1 MHz is blended with H138θ at 18 402.7 MHz. (4) NH2D (31,3–30,3) at 18 807.9 MHz is blended with NH3 (8, 5) at 18 808.5 MHz and H118ε at 18 808.4 MHz. (5) H124ζ at 19 283.8 MHz is blended with H117ε at 19 284.8 MHz. (6) H108δ at 19 776.0 MHz is blended with H116ε at 19 777.4 MHz. (7) He107δ at 20 333.8 MHz is blended with SO2 (123,9 − 132,12) at 20 335.4 MHz. (8) HDO (32,1 − 41,4) at 20 460.0 MHz is blended with H68α at 20 461.8 MHz. (9) H133θ at 20 494.5 MHz is blended with H138ι at 20 494.3 MHz. (10) H121ζ at 20 718.7 MHz is blended with NH3 (8, 6) at 20 719.2 MHz. (11) H126η at 21 227.2 MHz is blended with H120ζ at 21 228.6 MHz. (12) H136ι at 21 383.2 MHz is blended with H67α at 21 384.8 MHz. (13) H131θ at 21 420.0 MHz is blended with H84β at 21 422.1 MHz. (14) H2O (61,6 − 52,3) at 22 235.1 MHz is blended with NH3 (3, 1) at 22 234.6 MHz. (15) CH3OCHO (21,2 − 11,1 E) at 22 827.7 MHz is blended with CH3OCHO (21,2 − 11,1 A) at 22 828.1 MHz. (16) H132ι at 23 321.6 MHz is blended with H122η at 23 324.4 MHz. (17) H93γ at 23 389.1 MHz is blended with CH3OCH3 (123,10–114,7 AA) at 23 390.0 MHz. (18) He93γ at 23 398.6 MHz is blended with H102δ at 23 401.8 MHz. (19) H102δ at 23 401.8 MHz is blended with H65α at 23 404.3 MHz. (20) He102δ at 23 411.4 MHz is blended with He65δ at 23 413.8 MHz. (21) He65α at 23 413.8 MHz is blended with SO2 (52,4–61,5) at 23 414.2 MHz. (22) H116ζ at 23 444.0 MHz is blended with CH3OH (101,9–92,8 A) at 23 444.8 MHz and H127θ at 23 445.3 MHz. (23) NH3 (3, 3) at 23 870.1 MHz is blended with He81β at 23 870.6 MHz. (24) CH3OH (32,1 − 31,2 E) at 24 928.7 MHz is blended with H129ι at 24 931.9 MHz. (25) He107ε at 25 079.9 MHz is blended with H119η at 25 082.3 MHz. (26) CH3OH vt = 1 (99,1–98,2 A) and CH3OH vt = 1 (99,0–98,1 A) at 25 322.8 MHz are nearly degeneracy. (27) CH3OH vt = 1 (99,1 − 98,2 A) at 25 322.8 MHz is blended with 15NH3 (8, 8) at 25 323.5 MHz. (28) H79β at 25 695.9 MHz is blended with He63α at 25 696.7 MHz. (29) He79β at 25 706.4 MHz is blended with H118η at 25 707.4 MHz. (20 H90γ at 25 766.8 MHz is blended with H106ε at 25 769.8 MHz. (N) Newly detected transitons in the interstellar medium from known astronomical molecules.
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