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Table 1

Observed NH+ and para-NH transitions.

Species Frequencya T C b 1σ/TCc
G10.6 SgrB2 G10.6 SgrB2
(GHz) (K) (K) (K) (K)

NH+ 1012.540d 3.3 7.3 0.0019 0.0015
1019.211e 3.3 7.4 0.0022 0.0040
p-NH 933.855f 2.6 7.5 0.0035 0.0013

Notes. NH+ was observed in band 4a with the 1013 GHz line in the lower sideband, and the 1019 GHz line in the upper sideband.


Frequencies without the nuclear hyperfine structure (hfs; Hübers et al. 2009) that are used to convert frequencies to Doppler velocities relative to the local standard at rest VLSR. Hfs components of NH+ can be found in Tables D.1D.2. The p-NH frequency is estimated using spectroscopic data from Tack et al. (1986).


The single sideband continuum intensity.


The rms noise (for a channel width of 1 km s-1) divided by TC.


J = 1.5−0.5+ ( and + denotes the parity).


J = 1.5+−0.5.


JKa,Kc = 11,1−00,0.

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