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Home All issues Volume 684 (April 2024) A&A, 684 (2024) A189 Full HTML
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Table C.1

Spectroscopic parameters for some non-detected transitions we used to compute upper limits.

Frequency (MHz) Quantum numbers (J, Ka, Kc,υt) Eup (K) Aul (s−1) gup Original beam, PA (″×″,°) rms(a) (K) δV (km s−1)
CH3CHO(b)
232980.5688 52,3,2 − 41,3,2 23.03 1.34 10−5 22 0.38 × 0.34, 70 0.115 0.63
234469.2610 33,1,1 − 32,2,1 25.84 2.08 10−5 14 0.38 × 0.34, 70 0.115 0.63
234241.5647 33,0,2 − 32,1,2 25.94 2.08 10−5 14 0.38 × 0.34, 70 0.115 0.63
247432.9970 62,5,1 − 51,4,2 28.46 2.48 10−5 26 0.46 × 0.39, −80 0.0373 1.19
234437.9503 43,2,1 − 42,3,1 29.53 2.92 10−5 18 0.38 × 0.34, 70 0.115 0.63
234198.3312 43,1,2 − 42,2,2 29.64 2.91 10−5 18 0.38 × 0.34, 70 0.115 0.63
234396.7456 53,3,1 − 52,4,1 34.16 3.30 10−5 22 0.38 × 0.34, 70 0.115 0.63
234091.1815 53,2,2 − 52,3,2 34.26 3.29 10−5 22 0.38 × 0.34, 70 0.115 0.63
234385.7553 63,4,1 − 62,5,1 39.71 3.40 10−5 26 0.38 × 0.34, 70 0.115 0.63
233845.3823 63,3,2 − 62,4,2 39.81 3.38 10−5 26 0.38 × 0.34, 70 0.115 0.63
234486.2127 73,5,1 − 72,6,1 46.19 3.26 10−5 30 0.38 × 0.34, 70 0.115 0.63
234144.5136 73,4,0 − 72,5,0 46.29 3.80 10−5 30 0.38 × 0.34, 70 0.115 0.63
233341.7003 73,4,2 − 72,5,2 46.29 3.22 10−5 30 0.38 × 0.34, 70 0.115 0.63
233124.9632 83,5,0 − 82,6,0 53.69 3.88 10−5 34 0.38 × 0.34, 70 0.115 0.63
247142.155 140,14,0 − 131,13,0 95.68 6.64 10−5 58 0.46 × 0.39, −80 0.0373 1.19
247341.3322 140,14,2 − 131,13,1 95.76 6.63 10−5 58 0.46 × 0.39, −80 0.0373 1.19
246330.7304 153,13,0 − 152,14,0 131.49 4.89 10−5 62 0.46 × 0.39, −80 0.0373 1.19
234401.4565 182,17,1 − 181,18,1 166.47 2.71 10−5 74 0.38 × 0.34, 70 0.115 0.63
245939.644 192,18,0 − 191,19,0 183.86 3.04 10−5 78 0.46 × 0.39, −80 0.0373 1.19
233048.5159 122,11,4 − 112,10,4 285.13 4.15 10−5 50 0.38 × 0.34, 70 0.115 0.63
NH2CHO(c)
247390.719 120,12 − 110,11 78.12 1.10 10−3 25 0.46 × 0.39, −80 0.0373 1.19
260189.0898 122,10 − 112,9 92.35 1.25 10−3 25 0.44 × 0.37, −83 0.1071 0.14
233896.577 113,9 − 103,8 94.11 8.62 10−4 23 0.38 × 0.34, 70 0.115 0.63
234315.498 113,8 − 103,7 94.16 8.67 10−4 23 0.38 × 0.34, 70 0.115 0.63
CH3O13CHO(d)
246787.916 231,23,1 − 221,22,1 144.64 2.31 10−4 94 0.46 × 0.39, −80 0.0373 1.19
246788.142 230,23,1 − 220,22,1 144.64 2.31 10−4 94 0.46 × 0.39, −80 0.0373 1.19
246788.838 231,23,0 − 221,22,0 144.62 2.31 10−4 94 0.46 × 0.39, −80 0.0373 1.19
246789.063 230,23,0 − 220,22,0 144.62 2.31 10−4 94 0.46 × 0.39, −80 0.0373 1.19
C2H5CN
246268.7369 272,25−262,24 169.80 1.26 10−3 55 0.46 × 0.39, −80 0.0373 1.19
246421.9174 282,27−262,26 177.26 1.26 10−3 57 0.46 × 0.39, −80 0.0373 1.19
246548.6987 273,24−263,23 174.065 1.25 10−3 55 0.46 × 0.39, −80 0.0373 1.19
C2H3CN
247087.0333 263,24−253,23 179.49 3.33 10−3 159 0.46 × 0.39, −80 0.0373 1.19
247171.5135 256,20−265,21 225.85 3.17 10−5 153 0.46 × 0.39, −80 0.0373 1.19
247181.6118 256,19−265,22 225.85 3.17 10−5 153 0.46 × 0.39, −80 0.0373 1.19

Notes. (a)The rms is computed from the spectra extracted within 0.82″ × 0.77″.

(b)The spectroscopic parameters for CH3CHO (Kleiner et al. 1996) comes from JPL (TAG=44003) with Aul larger than 10−5 s−1.

(c)The spectroscopic parameters for NH2CHO (Kryvda et al. 2009) comes from CDMS (TAG=45512) with Aul larger than 10−4 s−1.

(d)The spectroscopic parameters for CH3O13CHO (Carvajal et al. 2010) comes from CDMS (TAG=61515) with Aul larger than 10−4 s−1.

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