Table 2. Observed line parameters of HCCCCNC in TMC-1.

J u	$v_{obs}^a$ (MHz)	${\text{T}}_A^{*}$ b (mK)	Δvc(kms–1)	${\displaystyle \int {\text{T}}_A^{*}\text{dv}}$ d (mK kms–1)
12	33628.151±0.010	3.6±0.5	0.71±0.12	2.68±0.3
13	36430.429±0.010	3.8±0.5	0.66±0.09	2.68±0.3
14	39232.730±0.010	3.1±0.6	0.85±0.12	2.76±0.3
15	42035.040±0.010	3.7±1.0	0.47±0.14	2.08±0.4
16	44837.295±0.010	4.9±1.2	0.42±0.19	2.24±0.5

Notes.

^(a)Observed frequencies for a v_LSR of 5.83 km s^–1. The J= 17-16 line has not been detected within a 3σ level of 5.7 mK.

^(b)Antenna temperature in mK.

^(c)Linewidth at half intensity derived by fitting a Gaussian line profile to the observed transitions (in kms^–1).

^(d)Integrated line intensity in mK kms^–1.