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Table 1

Summary of observational data.

Center coordinates
Telescope ν λ resolution RA, Dec (J2000) Map size Incl. sources
[GHz] [μm] [′′] [17:47:s, 28:m:s] [′′×′′]

Large-scale
VLA 23.1 13000 0.27 × 0.23 a 20.166, 23:04.76 143 × 143 Sgr B2
APEX b 345 870 19.2 19.943, 23:01.62 1100 × 1100 c Sgr B2
Herschel d 600 500 42.5 19.639, 22:57.77 1100 × 1100 c Sgr B2
857 350 30.3 19.791, 22:59.68 1100 × 1100 c Sgr B2
1200 250 23.4 19.939, 23:01.64 1100 × 1100 c Sgr B2
Herschel e 4283 70 10.4 20.046, 23:02.89 1100 × 1100 c Sgr B2
Small-scale
VLA 40.8 7000 0.15 × 0.10 f 19.902, 22:17.8 24 × 24 Sgr B2(N)
0.15 × 0.10 f 20.202, 23:05.3 Sgr B2(M)
40.8 7000 0.049 × 0.079 g 20.115 23:04.0 10 × 10 Sgr B2(M)
SMA 342 874 0.37 × 0.22 h 19.883, 23:18.4 16 × 16 Sgr B2(N)
0.37 × 0.22 h 20.158, 23:05.0 Sgr B2(M)
Single
pointing
Herschel i 4801250 625240 44.917.2 19.88, 22:18.4 Sgr B2(N)
20.35, 23:03.0 Sgr B2(M)
14101910 213157 15.311.3 19.88, 22:18.4 Sgr B2(N)
20.35, 23:03.0 Sgr B2(M)

Notes.

(a)

The VLA was in the DnCnBnA hybrid array configuration.

(b)

LABOCA instrument. This map has been combined with the Planck map.

(c)

The coverage of these maps is beyond the extent of Sgr B2. We have thus extracted cutouts.

(d)

SPIRE instrument.

(e)

PACS instrument.

(f)

The VLA was in the BnA hybrid array configuration.

(g)

The VLA was in the A array configuration.

(h)

The SMA was in the compact and in the very extended array configuration. Both data sets have been combined.

(i)

HIFI instrument.

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