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Home All issues Volume 688 (August 2024) A&A, 688 (2024) L15 Full HTML
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Table 1.

Observed line parameters of HCCCH2CCH.

Transition (a) νrest(b) ∫ T A * dv $ \int T_{\rm A}^* {\rm d}v $(c) Δv(d) T A * $ T_{\rm A}^* $(e) Notes
(MHz) (mK km s−1) (km s−1) (mK)
31, 3 − 20, 2 31 513.681 ± 0.015 0.57 ± 0.16 1.07 ± 0.34 0.50±0.11
41, 4 − 30, 3 36 228.011 ± 0.010 0.40 ± 0.14 0.71 ± 0.18 0.54±0.10 A
90, 9 − 81, 8 36 666.397 B
51, 5 − 40, 4 40 792.476 ± 0.010 0.76 ± 0.13 1.11 ± 0.26 0.65±0.10
122, 10 − 121, 11 41 502.013 ± 0.013 0.27 ± 0.08 0.58 ± 0.18 0.44±0.12
112, 9 − 111, 10 42 001.987 ± 0.019 0.18 ± 0.10 0.43 ± 0.24 0.41±0.12 C
102, 8 − 101, 9 42 659.467 ± 0.010 0.39 ± 0.07 0.56 ± 0.11 0.66±0.09
100, 10 − 91, 9 42 887.885 ± 0.010 0.36 ± 0.05 0.50 ± 0.12 0.68±0.10
92, 7 − 91, 8 43 432.014 ± 0.010 0.21 ± 0.09 0.43 ± 0.19 0.50±0.11
82, 6 − 81, 7 44 276.266 ± 0.010 0.67 ± 0.11 0.72 ± 0.14 0.88±0.19
72, 5 − 71, 6 45 149.193 ± 0.010 0.20 ± 0.05 0.38 ± 0.10 0.50±0.10
61, 6 − 50, 5 45 221.835 ± 0.010 0.85 ± 0.13 0.81 ± 0.15 0.98±0.14
62, 4 − 61, 5 46 009.868 ± 0.010 0.60 ± 0.10 0.73 ± 0.15 0.77±0.18
52, 3 − 51, 4 46 820.668 ± 0.010 0.60 ± 0.20 0.69 ± 0.22 0.82±0.27 C
42, 2 − 41, 3 47 548.326 ± 0.010 0.35 ± 0.06 0.38 ± 0.13 0.87±0.18
32, 1 − 31, 2 48 164.599 ± 0.020 0.36 ± 0.12 0.57 ± 0.23 0.59±0.19
110, 11 − 101, 10 49 081.189 ± 0.018 0.69 ± 0.19 0.76 ± 0.21 0.85±0.15
71, 7 − 60, 6 49 534.521 ± 0.010 0.72 ± 0.22 0.58 ± 0.19 1.17±0.33

Notes.

(a)

Quantum numbers are J K a, ′ K c ′ ′ − J K a, K c $ J^\prime_{K^\prime_{a,}K^\prime_{c}}{-}J_{K_{a,}K_{c}} $.

(b)

Observed frequency of the transition assuming a local standard of rest velocity of 5.83 km s−1.

(c)

Integrated line intensity in mK km s−1.

(d)

Linewidth at half intensity derived by fitting a Gaussian function to the observed line profile in km s−1.

(e)

Antenna temperature in millikelvins.

A: Frequency-switching data with a throw of 8 MHz only. Negative feature present in the data with a 10 MHz throw.

B: This line is blended with a transition of HC4N.

C: Frequency-switching data with a throw of 10 MHz only. Negative feature present in the data with a 8 MHz throw.

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