Discovery of two new magnesium-bearing species in IRC+10216: MgC3N and MgC4H

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Table A.2.

Observed rotational transitions of S 2 (MgC₄H).

N_u^(a)	J_u^(a)	N_l^(a)	J_l^(a)	Obs.Freq. ^(b)	Unc. ^(c)	O-C ^(d)	Int. ^(e)
26	25.5	25	24.5	71830.149	1.000	−0.943 ^(f)	0.155
26	26.5	25	25.5	71835.629	0.500	−0.147
27	26.5	26	25.5	74593.987	0.300	0.492	0.147
27	27.5	26	26.5	74597.613	0.300	−0.566
28	27.5	27	26.5	77355.466	0.300	−0.384
28	28.5	27	27.5	77361.172	0.300	0.638
29	28.5	28	27.5	80118.288	0.300	0.133	0.154
29	29.5	28	28.5	80122.274	0.500	n.i. ^(g)
30	29.5	29	28.5	[82880.409]	[0.081]	n.i. ^(h)
30	30.5	29	29.5	[82885.093]	[0.082]	n.i. ^(h)
31	30.5	30	29.5	[85642.610]	[0.078]	n.i. ⁽ⁱ⁾
31	31.5	30	30.5	[85647.294]	[0.076]	n.i. ⁽ⁱ⁾
32	31.5	31	30.5	88404.483	0.200	−0.273	0.164
32	32.5	31	31.5	88409.447	0.200	0.007
33	32.5	32	31.5	[91166.845]	[0.078]	n.i. ^(j)
33	33.5	32	32.5	[91171.529]	[0.070]	n.i. ^(j)
34	33.5	33	33.5	93929.043	0.200	0.166	0.136
34	34.5	33	33.5	93933.779	0.200	0.219
35	34.5	34	33.5	[96690.848]	[0.092]	n.i. ^(k)
35	35.5	34	34.5	[96695.531]	[0.079]	n.i. ^(k)
36	35.5	35	34.5	99452.794	0.500	0.037 ^(l)	0.151
36	36.5	35	35.5	99457.396	0.200	−0.044
37	36.5	36	35.5	[102214.602]	[0.121]	n.i. ^(g)
37	37.5	36	36.5	[102219.286]	[0.105]	n.i. ^(g)
38	37.5	37	36.5	[104976.382]	[0.140]	n.i. ^(m)	0.105
38	38.5	37	37.5	104981.775	1.000	0.709 ^(m)
39	38.5	38	37.5	107738.266	0.500	0.171	0.082
39	39.5	38	38.5	107741.955	0.500	−0.824
40	39.5	39	38.5	[110499.739]	[0.186]	n.i. ^(h)	0.074
40	40.5	39	39.5	[110504.422]	[0.169]	n.i. ^(h)

Notes.

^(a)

Quantum numbers N and J of the rotational transition. The subindex u means upper level and l lower level.

^(b)

Same as in Table A.1.

^(c)

Same as in Table A.1.

^(d)

Observed frequency minus calculated frequency from the fit in MHz. If n.i. the line is not included in the fit.

^(e)

Main beam temperature integrated over the LSR velocity, in K km s⁻¹. The uncertainties are below 30%.

^(f)

Line contaminated with KCN.

^(g)

Line contaminated with a U-line.

^(h)

Line contaminated with HC₄N.

⁽ⁱ⁾

Line contaminated with C₄H.

^(j)

Line contaminated with NaCl.

^(k)

Line contaminated with several features.

^(l)

Line contaminated with SiH₃CN.

^(m)

Line contaminated with ¹³CCCN.

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