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Table 1

Source sample: properties and resulting continuum intensities and noise levels.

Source RA Dec Distance νLSRa T C c 1σ/TCd
(J2000) (J2000) (kpc) (km s-1) (km s-1) (K)

W 31C (G10.60.4) 18:10:28.7 –19:55:50 4.95e 3 10–61 5.6 0.015
W 49N (G43.20.1) 19:10:13.2 +09:06:12 11.1f +11 20–84 7.0 0.013
W 51 (G49.50.4) 19:23:43.9 +14:30:30.5 5.4g +57 1–45 6.7 0.011
G34.3+0.1 18:53:18.7 +01:14:58 3.3h +58 8–45 5.6 0.014



Source LSR velocity.


LSR velocity range of foreground absorbing gas.


Single sideband (SSB) continuum intensity as measured in the Dual Beam Switch data.


Rms noise at a resolution of 1 km s-1 divided by TC.

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