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Table 1.

Observed line parameters of the target O-bearing COMs of this study in TMC-1.

Molecule Transition Eup νcalc peak Δv(a) VLSR S/N(b) Beff/Feff(c)
(K) (MHz) (mK) (km s−1) (km s−1) (mK km s−1) (σ)
trans-C2H3CHO 41, 4 − 31, 3 6.2 34 768.987 3.06 ± 0.31 0.62 ± 0.08 5.77 ± 0.03 2.03 ± 0.21 14.5 0.603
40, 4 − 30, 3 4.3 35 578.136 3.77 ± 0.33 0.81 ± 0.08 5.79 ± 0.03 3.27 ± 0.27 19.4 0.597
41, 3 − 31, 2 6.4 36 435.990 3.17 ± 0.29 0.85 ± 0.09 5.73 ± 0.04 2.87 ± 0.25 19.2 0.590
51, 5 − 41, 4 8.3 43 455.469 1.81 ± 0.49 0.72 ± 0.27 5.78 ± 0.08 1.38 ± 0.37 6.5 0.530
50, 5 − 40, 4 6.4 44 449.749 3.67 ± 0.54 0.54 ± 0.08 5.80 ± 0.04 2.11 ± 0.31 10.5 0.521
51, 4 − 41, 3 8.6 45 538.994 4.72 ± 0.66 0.69 ± 0.09 5.80 ± 0.04 3.45 ± 0.43 12.6 0.511
syn-C2H3OH 40, 4 − 31, 3 9.3 32 449.221 1.17 ± 0.32 1.07 ± 0.21 5.61 ± 0.11 1.34 ± 0.27 6.8 0.622
21, 2 − 11, 1 5.1 37 459.184 (d) – – – – – 0.581
20, 2 − 10, 1 2.8 39 016.387 1.90 ± 0.39 0.89 ± 0.16 5.81 ± 0.07 1.79 ± 0.29 9.0 0.568
21, 1 − 11, 0 5.3 40 650.606 1.71 ± 0.41 0.65 ± 0.19 5.88 ± 0.08 1.18 ± 0.28 6.7 0.554
HCOOCH3 31, 3 − 21, 2E 4.0 34 156.889 1.92 ± 0.29 0.62 ± 0.12 5.93 ± 0.06 1.27 ± 0.23 9.6 0.608
31, 3 − 21, 2A 3.9 34 158.061 1.86 ± 0.29 0.80 ± 0.16 5.84 ± 0.07 1.59 ± 0.28 10.6 0.608
30, 3 − 20, 2E 3.5 36 102.227 (e) – – – – – 0.593
30, 3 − 20, 2A 3.5 36 104.775 2.61 ± 0.29 0.74 ± 0.09 5.80 ± 0.04 2.05 ± 0.22 14.6 0.592
31, 2 − 21, 1E 4.4 38 976.085 1.81 ± 0.35 0.66 ± 0.14 5.93 ± 0.07 1.28 ± 0.25 8.3 0.568
31, 2 − 21, 1A 4.4 38 980.803 2.45 ± 0.35 0.57 ± 0.09 5.92 ± 0.04 1.49 ± 0.21 10.4 0.568
41, 4 − 31, 3E 6.1 45 395.802 2.82 ± 0.57 0.63 ± 0.18 6.00 ± 0.07 1.89 ± 0.40 8.3 0.512
41, 4 − 31, 3A 6.1 45 397.360 2.39 ± 0.57 0.42 ± 0.19 5.91 ± 0.10 1.07 ± 0.32 5.8 0.512
40, 4 − 30, 3E 5.8 47 534.116 3.19 ± 0.75 0.59 ± 0.12 5.92 ± 0.07 2.01 ± 0.44 7.1 0.493
40, 4 − 30, 3A 5.8 47 536.905 2.76 ± 0.75 0.98 ± 0.23 5.99 ± 0.10 2.88 ± 0.60 7.9 0.493
CH3OCH3 21, 1 − 20, 2AE + EA 4.2 31 105.223 1.35 ± 0.39 0.92 ± 0.25 5.72 ± 0.13 1.31 ± 0.36 5.8 0.632
21, 1 − 20, 2EE 4.2 31 106.150 1.52 ± 0.39 0.54 ± 0.34 5.94 ± 0.08 0.87 ± 0.29 5.0 0.632
31, 2 − 30, 3AE + EA 7.0 32 977.276 1.37 ± 0.25 0.63 ± 0.13 5.84 ± 0.07 0.91 ± 0.19 7.8 0.618
31, 2 − 30, 3EE 7.0 32 978.232 1.37 ± 0.25 0.95 ± 0.23 5.84 ± 0.09 1.38 ± 0.27 9.6 0.618
31, 2 − 30, 3AA 7.0 32 979.187 1.06 ± 0.25 0.85 ± 0.32 5.99 ± 0.12 0.96 ± 0.29 7.1 0.618
41, 3 − 40, 4EE 10.8 35 593.408 1.22 ± 0.27 0.56 ± 0.13 5.82 ± 0.07 0.73 ± 0.16 6.4 0.597
11, 1 − 00, 0EE 2.3 47 674.967 3.31 ± 0.62 0.59 ± 0.12 6.02 ± 0.06 2.08 ± 0.38 8.9 0.492

Notes. The line parameters peak, Δv, VLSR, and and the associated errors are derived from a Gaussian fit to each line profile.

(a)

Δv is the full width at half maximum (FWHM).

(b)

The signal-to-noise ratio is computed as /[rms × ], where c is the speed of light, δν is the spectral resolution (0.03815 MHz), the rms is given in the uncertainty of peak, and the rest of parameters are given in the table.

(c)

Beff is given by the Ruze formula Beff = 0.738 exp[ − (ν/72.2)2], where ν is the frequency in GHz and Feff = 0.97.

(d)

Line overlaps with a hyperfine component of CH2CCH (see Agúndez et al. 2021).

(e)

Line detected but not fitted because it overlaps with a negative frequency-switching artifact.

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