Table 4
Column densities for the detected species (in emission) in the GC along various lines of sight toward the CMZ from recent previous works.
| Molecule | SgrB2Na | SgrB2Ma | CNDb | LOS+0.693c | LOS-0.11c | CMZd,e |
|---|---|---|---|---|---|---|
| [cm−2] | [cm−2] | [cm−2] | [cm−2] | [cm−2] | [cm−2] | |
| c-C3H2 | 2.50 × 1014 | 2.60 × 1014 | 9.4 ± 2.5 × 1013 | 6.0 ± 0.7 × 1013 | ||
| CCH | 2.00 × 1015 | 5.00 × 1015 | 3.162 ± 0.186 × 1015 | 2.512 ± 0.24 × 1015 | ||
| HCN | 1.07 × 1017 | 1.79 × 1016 | 3.38 ± 0.40 × 1015 | >2.40 × 1015 | >4.80 × 1015 | 1.7 × 1015 |
| HCO+ | 5.07 × 1015 | 7.45 × 1015 | 5.26 ± 1.28 × 1014 | 5.70 ± 0.13 × 1014 | 3.6 ± 0.08 × 1014 | 5.0 × 1014 |
| HNC | 4.79 × 1015 | 5.98 × 1015 | 1.90 ± 0.29 × 1014 | >2.4 × 1015 | >1.8 × 1015 | 7.0 × 1014 |
| CS | 2.59 × 1017 | 1.49 × 1016 | 1.07 ± 0.13 × 1015 | |||
| 13CO | 3.08 × 1018 | 3.45 × 1018 | 2.81 ± 0.0644 × 1017 | 1.15 ± 0.095 × 1017 | ||
| CN | 6.93 × 1014 | 9.90 × 1015 | 5.48 ± 3.75 × 1015 | 1.698 ± 0.174 × 1015 | 1.738 ± 0.195 × 1015 |
Notes.a Belloche et al. (2013) of the velocity component closest to the systemic velocity of Sgr B2N (64 km s−1) and Sgr B2M (62 km s−1); b Harada et al. (2015); c Armijos-Abendaño et al. (2015); d Jones et al. (2012); e average value over the CMZ corrected for optical depth effects.
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