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Table 1.
Rest frequencies of the observed transitions and 1σ uncertainties.
| Species | Line | Frequency (MHz) |
|---|---|---|
| N2H+ | J = 1 → 0 | 93173.3991 ± 0.0004a |
| N15NH+ | J = 1 → 0 | 91205.6953 ± 0.0006b |
| 15NNH+ | J = 1 → 0 | 90263.8360 ± 0.0004b |
Notes.
(a)
From our calculations based on spectroscopic constants of Cazzoli et al. (2012).
(b)
From our calculations based on spectroscopic constants of Dore et al. (2009).
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