Discovery of HC4NC in TMC-1: A study of the isomers of HC3N, HC5N, and HC7N

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Table B.2.

Observed line parameters for HC₃N and its isotopologues in TMC-1.

Molecule	J_u − J_l	F_u–F_l	ν_rest^(a)		v_LSR^(b)	Δv^(c)	^(d)	σ^(e)
			(MHz)	(K)	(kms⁻¹)	(kms⁻¹)	(mK kms⁻¹)	(mK)
HCCCN	4–3	4–4	36390.8876(5)	0.444	5.81(01)	0.68(02)	0.3235(10)	0.6
HCCCN	4–3	3–2	36392.2345(5)	1.865	5.85(02)	0.65(05)	1.2943(10)	0.6
HCCCN	4–3	4–3/5–4 ^(e)	36392.3429(5)	2.981	5.78(02)	0.89(05)	2.8274(10)	0.6
HCCCN	4–3	3–3	36394.1777(5)	0.457	5.80(01)	0.67(02)	0.3258(10)	0.6
HCCCN	5–4	5–5	45488.8387(5)	0.385	5.81(02)	0.55(03)	0.2358(10)	1.3
HCCCN	5–4	4–3	45490.2594(5)	1.669	5.83(10)	0.66(10)	0.8865(10)	1.3
HCCCN	5–4	5–4/6–5 ^(e)	45490.3222(5)	2.963	5.81(10)	0.50(10)	2.0868(10)	1.3
HCCCN	5–4	4–4	45492.1107(5)	0.383	5.80(02)	0.56(03)	0.2278(10)	1.3
H¹³CCCN	4–3	4–4	35265.9791(7)	0.005	5.98(05)	0.96(10)	0.0053(10)	0.5
H¹³CCCN	4–3	3–2	35267.3117(7)	0.054	5.80(02)	0.73(02)	0.0415(10)	0.5
H¹³CCCN	4–3	4–3/5–4 ^(e)	35267.4191(6)	0.143	5.76(02)	0.78(02)	0.1185(10)	0.5
H¹³CCCN	4–3	3–3	35269.2342(7)	0.006	5.66(05)	0.68(10)	0.0040(10)	0.5
H¹³CCCN	5–4 ^(f)		44084.1622(8)	0.188	5.82(02)	0.77(02)	0.1538(10)	1.3
HC¹³CCN	4–3	4–4	36236.5139(7)	0.004	5.96(05)	0.54(10)	0.0025(10)	0.6
HC¹³CCN	4–3	3–2	36237.8535(7)	0.064	5.81(03)	0.65(03)	0.1343(10)	0.6
HC¹³CCN	4–3	4–3/5–4 ^(f)	36237.9619(7)	0.167	5.77(03)	0.75(03)	0.1327(10)	0.6
HC¹³CCN	4–3	3–3	36239.7865(7)	0.006	5.75(05)	0.63(10)	0.0052(10)	0.6
HC¹³CCN	5–4 ^(f)		45297.3345(7)	0.190	5.83(02)	0.76(02)	0.1532(10)	1.3
HCC¹³CN	4–3	4–4	36240.0100(7)	0.008	5.85(04)	0.54(02)	0.0048(10)	0.6
HCC¹³CN	4–3	3–2	36241.3514(7)	0.093	5.82(03)	0.68(02)	0.0674(10)	0.6
HCC¹³CN	4–3	4–3/5–4 ^(f)	36241.4436(7)	0.239	5.75(03)	0.72(02)	0.1820(10)	0.6
HCC¹³CN	4–3	3–3	36243.2862(7)	0.007	5.73(04)	0.64(02)	0.0050(10)	0.6
HCC¹³CN	5–4 ^(f)		45301.7069(8)	0.270	5.79(01)	0.75(02)	0.2164(10)	1.3
HCCC¹⁵N	4–3		35333.8879(7)	0.079	5.77(02)	0.72(02)	0.0598(10)	0.5
HCCC¹⁵N	5–4		44167.2678(9)	0.096	5.79(04)	0.55(02)	0.0567(10)	1.3
DCCCN	4–3	4–4	33771.0873(3)	0.007	5.78(10)	0.78(10)	0.0060(10)	0.5
DCCCN	4–3	3–2	33772.4373(3)	0.086	5.74(02)	0.83(03)	0.0754(20)	0.5
DCCCN	4–3	4–3/5–4 ^(g)	33772.5477(3)	0.229	5.76(02)	0.79(03)	0.1917(20)	0.5
DCCCN	4–3	3–3	33774.3772(3)	0.003	5.86(10)	0.78(05)	0.0020(05)	0.5
DCCCN	5–4 ^(f)		42215.5823(9)	0.320	5.84(02)	0.78(03)	0.2653(10)	0.9

Notes.

^(a)

Adopted rest frequencies (see text).

^(b)

Local standard of rest velocity of the emission for the adopted rest frequency (in kms⁻¹).

^(c)

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

^(d)

Integrated line intensity in K kms⁻¹.

^(e)

The sensitivity of the data (root mean square error) has been derived from a baseline to the each line in a velocity window −6.2 to 17.8 km s⁻¹ (in mK).

^(f)

Average of the two strongest hyperfine components.

^(g)

Average of the three strongest hyperfine components.

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