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Table B.1

Properties of the analyzed spectral lines taken from Splatalogue (Remijan et al. 2007).

Einstein Upper Line
Frequency coefficient energy level optical depth
Molecule Quantum numbers ν log (Aul) Eu∕kB Catalog
(GHz) (log s−1) (K)
13CO 2−1 220.399 − 6.22 15.9 JPL 1.5(0) 2.1(2)
C18O 2−1 219.560 − 6.22 15.8 JPL 1.1(−1) 5.4(0)
SO 65−54 219.949 − 3.87 35.0 JPL 2.7(−1) 8.3(0)
OCS 18−17 218.903 − 4.52 99.8 JPL 4.3(−1) 2.4(1)
O13CS 18−17 218.199 − 4.52 99.5 JPL 2.0(−3) 3.4(−1)
SO2 227,15−236,18 219.276 − 4.67 352.8 JPL 2.8(−2) 5.6(−1)
34SO2 111,11−100,10 219.355 − 3.96 60.2 JPL 1.1(−2) 1.1(−1)
DCN 3−2 217.239 − 3.34 20.9 CDMS 9.7(−2) 2.2(1)
H2CO 30,3−20,2 218.222 − 3.55 21.0 JPL 6.2(−1) 2.5(1)
H2CO 32,2−22,1 218.476 − 3.80 68.1 JPL 1.5(−1) 5.8(0)
H2CO 32,1−22,0 218.760 − 3.80 68.1 JPL 1.3(−1) 8.5(0)
HCO 31,2−21,1 219.909 − 3.59 32.9 JPL 1.5(−2) 7.9(−1)
HNCO 101,10−91,9 218.981 − 3.85 101.1 CDMS 6.5(−2) 2.3(0)
HNCO 103,8−93,7 219.657 − 3.92 433.0 CDMS 1.0(−2) 1.7(−1)
HNCO 103,7−93,6 219.657 − 3.92 433.0 CDMS 1.0(−2) 1.7(−1)
HNCO 102,9−92,8 219.734 − 3.87 228.3 CDMS 5.8(−2) 9.9(−1)
HNCO 102,8−92,7 219.737 − 3.87 228.3 CDMS 6.5(−2) 9.9(−1)
HNCO 100,10−90,9 219.798 − 3.83 58.0 CDMS 1.3(−1) 3.9(0)
HNCO 101,9−91,8 220.585 − 3.84 101.5 CDMS 9.1(−2) 2.3(0)
HC3N 24−23 218.325 − 3.08 131.0 JPL 8.3(−2) 1.3(0)
HC3N; v7 = 1 ‡ 24−23, l = 1e 218.861 − 3.08 452.1 CDMS – –
HC3N; v7 = 1 24−23, l = 1f 219.174 − 3.08 452.3 CDMS 2.5(−2) 5.8(−1)
HC3 N; v7 = 2 24− 23, l = 0 219.675 − 3.08 773.5 CDMS 3.4(−3) 6.8(−2)
HC3 N; v7 = 2 24− 23, l = 2e 219.707 − 3.08 776.8 CDMS 4.2(−3) 6.6(−2)
HC3 N; v7 = 2 ‡ 24− 23, l = 2f 219.742 − 3.08 776.8 CDMS – –
HCC13CN 24− 23 217.420 − 3.09 130.4 CDMS 1.1(−3) 1.8(−2)
CH3OH 201,19 − 200,20 E 217.887 − 4.47 508.4 CDMS 1.4(−2) 5.3(−1)
CH3OH 42,3 − 31,2 E 218.440 − 4.33 45.5 CDMS 5.7(−1) 4.0(1)
CH3OH 253,23 − 244,20 E 219.984 − 4.69 802.2 CDMS 1.5(−3) 9.6(−2)
CH3OH 235,18 − 226,17 E 219.994 − 4.76 775.9 CDMS 1.5(−3) 9.4(−2)
CH3OH 80,8 − 71,6 E 220.079 − 4.60 96.6 CDMS 9.5(−2) 5.0(0)
CH3OH‡ 105,6 − 114,8 E 220.401 − 4.95 251.6 CDMS – –
CH3OH; vt = 1 61,5 − 72,5 A 217.299 − 4.37 373.9 CDMS 4.1(−2) 1.6(0)
CH3OH; vt = 1 156,9 − 165,11 A 217.643 − 4.72 745.6 CDMS 1.0(−2) 1.5(−1)
CH3OH; vt = 1 156,10 − 165,12 A 217.643 − 4.72 745.6 CDMS 1.0(−2) 1.5(−1)
CH3CN 128 − 118 220.476 − 3.45 525.6 JPL 7.4(−3) 4.0(−1)
CH3CN 127 − 117 220.539 − 3.38 418.6 JPL 2.2(−2) 7.7(−1)
CH3CN 126 − 116 220.594 − 3.32 325.9 JPL 9.2(−2) 2.7(0)
CH3CN 125 − 115 220.641 − 3.28 247.4 JPL 5.9(−2) 2.1(0)
CH3CN 124 − 114 220.679 − 3.25 183.1 JPL 1.1(−1) 2.7(0)
CH3CN 123 − 113 220.709 − 3.22 133.2 JPL 2.7(−1) 8.2(0)
CH3CN 122 − 112 220.730 − 3.21 97.4 JPL 2.1(−1) 4.7(0)
CH3CN 121 − 111 220.743 − 3.20 76.0 JPL 4.5(−1) 6.7(0)
CH3CN 120 − 110 220.747 − 3.20 68.9 JPL 3.3(−1) 6.7(0)
CHCN 126 − 116 220.486 − 3.16 325.9 JPL 9.8(−4) 3.1(−2)
CHCN 125 − 115 220.532 − 3.12 247.4 JPL 5.7(−3) 4.8(−1)
CHCN 124 − 114 220.570 − 3.09 183.1 JPL 1.3(−3) 3.9(−2)
CHCN 123 − 113 220.600 − 3.06 133.1 JPL 1.5(−2) 6.4(−1)
CHCN 122 − 112 220.621 − 3.05 97.4 JPL 2.0(−3) 6.3(−2)
CHCN 121 − 111 220.634 − 3.04 76.0 JPL 1.4(−2) 1.0(0)
CHCN 120 − 110 220.638 − 3.03 68.8 JPL 6.4(−2) 2.1(0)

Notes. The entries are taken from the CDMS and JPL catalogs (Müller et al. 2005; Pickett et al. 1998). Blended lines are indicated by a ‡. The mean and maximum line optical depth for each transition fitted with XCLASS are computed considering all 120 positions (see Sect. 4.2). a(b) = a × 10b.

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