Discovery of the C7N− anion in TMC-1 and IRC +10216

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Table A.2.

Observed lines of C₇N⁻ in TMC-1.

Transition	ν_obs^a	ν_obs − ν_cal^b	∫ dv ^c	Δv ^d	^e	σ^f
27-26	31464.665±0.020	-5.0	0.78±0.09	0.80±0.20	0.97	0.12^g
28-27	32630.005±0.010	1.5	0.65±0.08	0.76±0.05	0.80	0.10
29-28	33795.331±0.010	-3.3	0.40±0.09	0.71±0.18	0.52	0.11
30-29	34960.667±0.010	4.8	0.49±0.05	0.90±0.12	0.53	0.08
31-30	36125.987±0.010	-0.3	0.31±0.06	0.61±0.15	0.48	0.09
32-31	37291.308±0.020	-1.5	0.24±0.05	0.53±0.11	0.44	0.09
33-32	38456.628±0.004					≤0.24^h

Notes.

Observed frequency assuming a v_LSR of 5.83 km s⁻¹.

Observed minus calculated frequencies in kHz.

Integrated line intensity in mK km s⁻¹.

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

Antenna temperature in milliKelvin.

Root mean square noise of the data.

Line blended with a U feature at 31464.59 MHz.

3σ upper limit. The frequency of this transition corresponds to the predicted one from the constants given in Table 1.

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