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Table 1
Coordinates and sizes of observed OTF maps at 218 and 291 GHz, as well as velocity ranges over which the H2CO line emission was integrated (see Sect 3.1).
| Source | RA | Dec | vLSR | OTF size | σmedian(Tmb) | vrange | |||
| (hh mm ss.ss) | (dd ′′″″.″) | (km s-1) | (″×″) | (mK per pixel) | (km s-1) | ||||
| (EQ 2000) | (EQ 2000) | 218 GHz | 291 GHz | 218 GHz | 291 GHz | Whole Source | Vel. Comp. | ||
|
|
|||||||||
| 20 km s-1 cloud | 17 45 36.89 | −29 05 12.0 | 20 | 115 × 200 | 180 × 270 | 41 | 30 | −15−36 | 0−6 |
| 8−14 | |||||||||
| 27−33 | |||||||||
| 50 km s-1 cloud | 17 45 51.18 | −28 59 34.3 | 50 | 115 × 150 | 180 × 180 | 59 | 46 | 16−80 | 41−47 |
| 57−63 | |||||||||
| G0.253+0.016 | 17 46 08.55 | −28 42 44.0 | 25 | 115 × 200 | 200 × 340 | 35 | 44 | −6−54 | −3−3 |
| 16−22 | |||||||||
| 36−42 | |||||||||
| 75−81 | |||||||||
| G0.411+0.050 | 17 46 24.44 | −28 33 26.6 | 25 | 115 × 115 | 180 × 240 | 36 | 44 | 10−30 | 19−25 |
| G0.480−0.006 | 17 46 46.00 | −28 31 51.0 | 25 | 115 × 115 | 180 × 240 | 49 | 43 | 19−44 | 27−33 |
| Sgr C | 17 44 43.20 | −29 27 53.7 | −50 | 200 × 180 | 44 | −60−−46 | −55−−49 | ||
| Sgr D | 17 48 41.75 | −28 01 45.0 | −15 | 180 × 180 | 44 | −17−−14 | −19−−13 | ||
Notes. Columns 6 and 7 give the median rms values of the H2CO cubes of the whole velocity range of each source at 218 and 291 GHz.
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