Table 5
Column densities from different molecules derived from RADEX using as a fixed parameter the kinetic temperatures and the n(H2) (Table 4).
| Source | Cloud | Tkin | N(p-NH3) | N(CS) | N(SiO) | N(HNCO) | N(C34S) | N(13CO) | N(C18O) | N(H2)a |
| number | [K] | [1014 cm-2] | [1013 cm-2] | [1013 cm-2] | [1013 cm-2] | [1013 cm-2] | [1016 cm-2] | [1016 cm-2] | [1021 cm-2] | |
|
|
||||||||||
| Halo 1 | 1 | 115 |
|
>6.73 | >2.24 | >0.50 | − |
|
|
|
| 2 | 90 |
|
|
|
|
|
|
|
|
|
| 3 | 135 |
|
|
|
− | − |
|
|
|
|
|
|
||||||||||
| Halo 2 | 1 | 113 | − |
|
|
|
|
− | − | − |
| 2 | 113 | − | >2.91 | >0.34 | − | >0.13 | − | − | − | |
|
|
||||||||||
| Halo 3 | 1 | 113 | − |
|
|
|
|
− | − | − |
| 2 | 113 | − |
|
− |
|
|
− | − | − | |
|
|
||||||||||
| Halo 4 | 1 | 95 |
|
|
|
|
|
|
|
|
|
|
||||||||||
| Halo 5 | 1 | 95 | − |
|
|
|
|
− | − | − |
|
|
||||||||||
| Disk X1-1 | 1 | 38 |
|
|
|
|
|
|
|
|
| 300 |
|
|
|
|
|
|
|
|
||
|
|
||||||||||
| Disk X2-1 | 1 | 38 |
|
|
|
|
|
|
|
|
| 100 |
|
|
|
|
|
|
|
|
||
|
|
||||||||||
| Disk X1-2 | 1 | 52 |
|
|
|
|
|
|
|
|
| 215 |
|
|
|
|
|
|
|
|
||
|
|
||||||||||
| Disk X2-2 | 1 | 28 |
|
|
|
|
|
|
|
|
| 95 |
|
|
|
|
|
|
|
|
||
|
|
||||||||||
| Disk 1 | 1 | 23 |
|
>2.90 | >0.25 | >1.12 | >0.03 |
|
|
|
| 154 | >0.16 | >7.20 | >1.43 | >2.82 | >0.09 |
|
|
|
||
| 2 | 38 |
|
|
|
|
|
|
|
|
|
| 82 | > 0.45 |
|
|
|
|
|
|
|
||
|
|
||||||||||
| Disk 2 | 1 | 68 |
|
|
|
− |
|
− | − | − |
| 200 |
|
|
|
− |
|
− | − | − | ||
| 2 | 145 |
|
>16.51 | >5.63 | >264.4 | >5.67 |
|
|
|
|
| 3 | 50 |
|
|
− | − | − | − | − | − | |
| 80 |
|
|
− | − | − | − | − | − | ||
Notes.
Column densities of H2 derived from 13CO using a conversion factor of 5.0 × 10-6 (Rodríguez-Fernández et al. 2001) for the normal GC gas, and a factor of 1.9 × 10-6 for the gas in the disk-halo interaction regions (see text for details).
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