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Table 2.

Observed line parameters for CH2CHCHS in TMC-1.

Transition νcalc VLSR Δv TA*dv S/N a
(MHz) (km s−1) (km s−1) (mK km s−1) (σ)
61, 6-51, 5 32101.116 5.79 ± 0.20 0.51 ± 0.30 0.13 ± 0.07 b 3.2
60, 6-50, 5 32571.104 5.98 ± 0.30 0.44 ± 0.30 0.15 ± 0.08 b 3.5
61, 5-51, 4 33065.522 5.87 ± 0.11 0.75 ± 0.22 0.24 ± 0.07 5.7
71, 7-61, 6 37449.491 5.92 ± 0.15 1.02 ± 0.47 0.39 ± 0.13 8.1
70, 7-60, 6 37992.665 5.84 ± 0.13 0.55 ± 0.22 0.18 ± 0.07 4.0
71, 6-61, 5 38574.563 5.74 ± 0.09 0.76 ± 0.21 0.34 ± 0.12 7.6
81, 8-71, 7 42797.043 5.78 ± 0.10 0.49 ± 0.19 0.17 ± 0.07 3.6
80, 8-70, 7 43411.024 5.82 ± 0.11 0.83 ± 0.28 0.35 ± 0.09 6.4
91, 9-81, 8 48143.659 5.84 ± 0.09 0.48 ± 0.20 0.34 ± 0.13 4.7

Notes. a Signal-to-noise ratio is derived as in Agúndez et al. (2025). b Line is only marginally detected. Intensity is probably reduced due to overlap with a negative frequency-switching artefact.

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