Interstellar nitrile anions: Detection of C3N− and C5N− in TMC-1

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Table A.1.

Observed line parameters for C₅N⁻ in IRC +10216.

J_u	ν_obs^(a)	ν_o − ν_c^(b)	^(c)	Notes
	(MHz)	(MHz)	(K km s⁻¹)
12	33332.508 ± 0.050	−0.062	0.063 ± 0.003
13	36110.197 ± 0.050	−0.040	0.091 ± 0.003
14	38887.789 ± 0.100	−0.105	0.154 ± 0.005	¹
15	41665.527 ± 0.050	−0.013	0.115 ± 0.003
16	44443.116 ± 0.050	−0.057	0.108 ± 0.003
17	47220.740 ± 0.050	−0.052	0.102 ± 0.003
18	49998.450 ± 0.100	+0.052	0.100 ± 0.005	¹
26	72218.580 ± 0.050	−0.049	0.303 ± 0.008
27	74996.039 ± 0.050	−0.032	0.308 ± 0.005
28	77773.492 ± 0.050	+0.002	0.297 ± 0.004
29	80550.817 ± 0.050	−0.070	0.264 ± 0.009
30	83328.258 ± 0.050	−0.003	0.216 ± 0.007
31				²
32	88882.883 ± 0.050	−0.052	0.233 ± 0.003
33	91660.297 ± 0.050	+0.063	0.232 ± 0.003
34	94437.518 ± 0.050	+0.011	0.238 ± 0.003
35	97214.796 ± 0.050	+0.042	0.216 ± 0.006
36	99991.999 ± 0.050	+0.026	0.207 ± 0.006
37	102769.266 ± 0.100	+0.101	0.266 ± 0.007	³
38	105546.319 ± 0.050	−0.008	0.202 ± 0.006
39	108323.470 ± 0.050	+0.010	0.130 ± 0.003
40	111100.565 ± 0.100	+0.002	0.111 ± 0.008
41	113877.556 ± 0.100	−0.081	0.092 ± 0.015	1
48	133316.175 ± 0.150	−0.078	0.056 ± 0.010	⁴

Notes.

^(a)

Observed frequencies assuming a source v_LSR of −26.5 km s⁻¹ and an expanding velocity of 14.5 km s⁻¹ (Cernicharo et al. 2000, 2018).

^(b)

Observed minus calculated frequencies.

^(c)

Integrated line intensity in K km s⁻¹.

⁽¹⁾

Blended with another feature but clear line profile.

⁽²⁾

Fully blended with another spectral feature. Fit not possible.

⁽³⁾

Data smoothed to a resolution of 0.6 MHz.

⁽⁴⁾

Data smoothed to a resolution of 1.0 MHz.

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