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Home All issues Volume 636 (April 2020) A&A, 636 (2020) A118 Full HTML
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Table C.2

Transitions detected in the NOEMA observations of W3 IRS4.

Species Transition Rest freq.(a) Eup ∕kb (a) Aul (a) Species Transition Rest freq.(a) Eup∕kb(a) Aul(a)
(GHz) (K) (s−1) (GHz) (K) (s−1)
DCN 3−2 217.238538 20.9 4.6 × 10−4 C18O 2−1 219.560354 15.8 6.0 × 10−7
A-CH3OH νt = 1 61,5−72,6 217.299202 373.9 4.3 × 10−5 HNCO 10−9(b) 219.656770 433.0 1.2 × 10−4
A-CH3OH νt = 1 156,10−165,11 217.642859 745.6 1.9 × 10−5 HNCO 102,9−92,8 219.733850 228.3 1.4 × 10−4
c−C3H2 6−5(b) 217.822148 38.6 5.4 × 10−4 HNCO 102,8−92,7 219.737193 228.3 1.4 × 10−4
33SO 65−43(c) 217.832642 34.7 1.3 × 10−4 HNCO 100,10−90,9 219.798274 58.0 1.5 × 10−4
E-CH3OH 201,19−200,20 217.886390 508.4 3.4 × 10−5 SO 65−54 219.949442 35.0 1.3 × 10−4
c-C3H2 51,4−42,3 217.940046 35.4 4.0 × 10−4 H213CO 31,2−21,1 219.908525 32.9 2.6 × 10−4
CH3COCH3 20−19(b) 218.091412 119.2 4.3 × 10−4 t-HCOOH 100,10−90,9 220.037967 58.6 1.2 × 10−4
CH3COCH3 20−19(b) 218.127207 119.1 2.2 × 10−4 E-CH3OH 80,8−71,6 220.078490 96.6 2.5 × 10−5
H2CO 30,3−20,2 218.222192 21.0 2.8 × 10−4 SO2 ν2 = 1 163,13−162,14 220.165253 910.5 1.1 × 10−4
CH3OCHO 173,14−163,13 218.280900 99.7 1.5 × 10−4 CH3OCHO 174,13−164,12 220.166888 103.2 1.5 × 10−4
CH3OCHO 173,14−163,13 218.297890 99.7 1.5 × 10−4 H2CCO 111,11−101,10 220.177569 76.5 1.2 × 10−4
HC3N 24−23 218.324723 131.0 8.3 × 10−4 CH3OCHO 173,14−163,13 220.190285 103.1 1.5 × 10−4
E-CH3OH 42,2−31,2 218.440050 45.5 4.7 × 10−5 CH3COCH3 22−21(b) 220.355335 124.0 5.1 × 10−4
NH2CHO 101,9−91,8 218.459213 60.8 7.5 × 10−4 CH3COCH3 21−20(b) 220.361881 123.9 3.9 × 10−4
H2CO 32,2−22,1 218.475632 68.1 1.6 × 10−4 CH3COCH3 21−20(b) 220.368323 123.8 5.1 × 10−4
H2CO 32,1−22,0 218.760066 68.1 1.6 × 10−4 13CO 2−1 220.398684 15.9 3.0 × 10−7
HC3N ν7 = 1 24−23 218.860800 452.1 8.3 × 10−4 CH3CN 128−118 220.475807 525.6 3.5 × 10−4
33SO2 222,20−221,21(c) 218.882280 251.8 9.3 × 10−5 CH3CN 127−117 220.539324 418.6 4.2 × 10−4
OCS 18−17 218.903356 99.8 3.1 × 10−5 HNCO 101,9−91,8 220.584751 101.5 1.5 × 10−4
HNCO 101,10−91,9 218.981009 101.1 1.4 × 10−4 CH3CN 126−116 220.594423 325.9 4.8 × 10−4
SO2 ν2 = 1 202,18−193,17 218.995832 971.3 3.8 × 10−5 33SO2 111,11−100,10(c) 220.617779 61.1 1.1 × 10−4
HC3N ν7 = 1 24−23 219.173757 452.3 8.3 × 10−4 CH3CN 125−115 220.641084 247.4 5.3 × 10−4
CH3COCH3 21−20(b) 219.219931 122.0 4.7 × 10−4 SO2 ν2 = 1 125,7−134,10 220.657894 896.4 1.9 × 10−5
CH3COCH3 21−20(b) 219.242141 121.9 4.3 × 10−4 CH3CN 124−114 220.679287 183.1 5.7 × 10−4
CH3COCH3 21−20(b) 219.264275 121.8 4.7 × 10−4 CH3CN 123−113 220.709017 133.2 6.0 × 10−4
SO2 227,15−236,18 219.275978 352.8 2.1 × 10−5 CH3CN 122−112 220.730261 97.4 6.2 × 10−4
34SO2 111,11 −100,10 219.355009 60.2 1.1 × 10−4 CH3CN 121−111 220.743011 76.0 6.3 × 10−4
SO2 ν2 = 1 222,20 −221,21 219.465545 1012.7 1.0 × 10−4 CH3CN 120−110 220.747261 68.9 6.4 × 10−4

Notes. (a) Taken from CDMS (Müller et al. 2001, 2005), except for CH3CN and CH3OCHO which are taken from the Jet Propulsion Laboratory (JPL) database (Pickett et al. 1998). (b) Blend of two or more lines with different quantum numbers but the same Eup at the same frequency. The highest Aul is given. (c)Blend of a number of transitions with small differences in frequency due to different spin states but the same Eup. The frequency of the highest Aul transition is given.

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