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Table 1

Observed transitions towards W49N and G10.6−0.4.

Species Frequencya Transition Bandb Tsysc tintd TCe 1σ/TCf
G10.6 W49N G10.6 W49N G10.6 W49N
(GHz) (K) (s) (s) (K) (K)
NHg 946.476 NJ = 10 ← 01 3b 416 234 116 2.5 3.4 0.021 0.027
974.478 NJ = 12 ← 01 4a 338 186 103 2.6 3.9 0.018 0.018
o-NH2h 952.578 NKa,KcJ = 11,13/2 ← 00,01/2 3b 230 92 68 2.6 3.6 0.018 0.017
o-NH3i 572.498 JK = 10 ← 00 1b 87 1024 94 0.61 0.93 0.013 0.025
1214.859 JK = 20 ← 10 5a 1024 293 196 3.4 5.2 0.032 0.025
p-NH3 1215.246 JK = 21 ← 11 5a 1024 293 196 3.4 5.2 0.032 0.025
NH+ 1012.540 N = 1 ← 1 J = 3/2  ←  1/2 4a 327 171 91 3.0 4.4 0.013 0.013

Notes. 

(a)

The frequencies refer to the strongest hyperfine structure components.

(b)

HIFI consists of 7 different mixer bands and two double sideband spectrometers. All transitions were observed in the upper sideband except NH+.

(c)

System temperature.

(d)

The averaged on-source integration time for each transition.

(e)

The single sideband (SSB) continuum intensity (the observed double sideband (DSB) continuum divided by two).

(f)

The rms noise, at a resolution of 1.1 MHz, divided by TC.

(g)

The quantum numbers for the rotational transition NJ are F1 = IH + J and F = IN + FN (Klaus et al. 1997).

(h)

The quantum numbers for the rotational transition NKa,KcJ are F1 = IN + J and F = IH + F1 (Müller et al. 1999).

(i)

The rotational energy is given by the two principal quantum numbers (J,K), corresponding to the total angular momentum and its projection along the molecular axis (e.g. Ho & Townes 1983; Rist et al. 1993).

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