Table 5
Fractional abundances for the CMZ from previous works.
| Molecule | 1.6 complexa | 1.3 complexa | Sgr B2a | G0.4a | G0.25a | 50 |
20 |
Sgr Ca |
|---|---|---|---|---|---|---|---|---|
| (20, 210)e | (40, 230)e | (20, 140)e | (−20, 60)e | (5, 100)e | (0, 100)e | (−20, 80)e | (−80, −5)e | |
| [× 10−9] | [× 10−9] | [× 10−9] | [× 10−9] | [× 10−9] | [× 10−9] | [× 10−9] | [× 10−9] | |
| H13CN | 1.11 (0.06) | 1.34 (0.03) | 0.66 (0.02) | 1.02 (0.03) | 1.17 (0.02) | 1.63 (0.01) | 1.53 (0.02) | 0.61 (0.03) |
| SiO | 2.47 (0.08) | 2.60 (0.04) | 1.12 (0.02) | 1.40 (0.03) | 1.05 (0.02) | 1.40 (0.01) | 1.60 (0.03) | 0.50 (0.05) |
| HNCO | 41.13 (0.40) | 10.39 (0.23) | 26.32 (0.17) | 21.12 (0.19) | 14.32 (0.17) | 10.52 (0.09) | 17.62 (0.23) | 3.62 (0.26) |
| HCN | 14.92 (0.05) | 17.18 (0.08) | >10.34 | 13.27 (0.03) | 15.95 (0.02) | >23.19 | 22.30 (0.03) | 8.22 (0.05) |
| HCO+ | 4.17 (0.04) | 5.17 (0.03) | >3.96 | 2.25 (0.01) | 2.74 (0.02) | 3.50 (0.01) | 4.60 (0.01) | 1.87 (0.02) |
| HNC | 5.14 (0.05) | 2.43 (0.02) | >3.48 | 8.37 (0.02) | 6.93 (0.02) | 3.95 (0.01) | 8.20 (0.02) | 2.02 (0.02) |
| HC3N | 7.84 (0.22) | 4.71 (0.13) | 12.41 (0.09) | 5.16 (0.08) | 7.00 (0.07) | 7.46 (0.04) | 8.45 (0.06) | 1.63 (0.11) |
| N2H+ | 1.85 (0.04) | 0.88 (0.02) | 1.39 (0.01) | 2.30 (0.02) | 2.28 (0.01) | 1.48 (0.01) | 2.58 (0.01) | 1.03 (0.01) |
| CH3OH | ||||||||
| OCS | ||||||||
| CS | 9.34 (0.00) | 18.60 (1.77) | 32.40 (1.60) | 12.43 (1.04) | 10.69 (0.92) | 23.37 (0.58) | 23.27 (1.06) | 15.39 (1.49) |
| SO | ||||||||
| Molecule | +0.693c | −0.11c | Sgr B2Nd,f | Sgr B2Md,f | CNDg | |||
| (−30, −30) | ||||||||
| [× 10−9] | [× 10−9] | [× 10−9] | [× 10−9] | [× 10−9] | ||||
| H13CN | >6 | >9 | 8.72 | 1.30 | 3.48 | |||
| SiO | 1.4 (0.2) | 7.2 (0.2) | 0.49 | 0.65 | 2.85 | |||
| HNCO | 24.7 (1.4) | 28.3 (3.0) | 2.78 | 85.07 | ||||
| HCN | >12 | >180 | 173.70 | 25.94 | 121.25 | |||
| HCO+ | 9.6 (2.2) | 15.5 (3.0) | 8.23 | 10.80 | 18.87 | |||
| HNC | >42 | >60 | 7.78 | 8.67 | 6.82 | |||
| HC3N | 9.4 (1.0) | 11.2 (1.0) | 19.48 | 0.65 | 1.03 | |||
| N2H+ | 0.81 | 1.42 | 0.53 | |||||
| CH3OH | 2160 (257) | <1670 | 28571.43 | 23.62 | ||||
| OCS | 31.8 (1.5) | 36.4 (6.5) | 292.21 | 4.06 | ||||
| CS | 12.43 (1.04) | 420.45 | 21.59 | 38.38 | ||||
| SO | 10.4 (8.8) | 7.8 (2.0) | 1316.56 | 13.01 | 16.0 | |||
Notes. (a) Jones et al. (2012), (b) we used the 13CS emission anda 12C/13C ratio of 24 toderive the fractional abundance of 12CS, The column densities of HCN, HCO+ and HNC were corrected by opacity following the formulation in Jones et al. (2012). In SgrB, the 13 C isotopic substitution could be affected by opacity as shown in Fig. A.6, therefore the fractional abundances are a lower limits. The same is true in the 50 km s −1 cloud for H13CN. (c) Armijos-Abendaño et al. (2015), (d) Belloche et al. (2013), (e) integrate velocity range [km s−1]. (f) Fractional abundance of the velocity component closest to the nominal velocity of Sgr B2N and Sgr B2M. The N(H2) value was derived from N(13CO) with the conversion factor used for the CMZ in this work. (g) Harada et al. (2015). The H2 column density was estimated from multi-transition LVG analysis of CO using an abundance ratio CO/H2 = 8 × 10−5.
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