Table 8
Relative abundances [X]/[H2] (10-11).
| Species | FG0.89SW | FG0.89NE | Diffuse | Translucent | TMC 1 | Sgr B2(N) | LMC | NGC 253 | NGC 4945 |
| clouds | clouds | N113 | |||||||
|
|
|||||||||
| C2H | 6242.4 | 2924.5 | 2600.0 | 6600.0 | 7500.0 | – | – | 2000.0 | 12 600.0 |
| HCN | 1520.4 | 733.0 | 300.0 | 3600.0 | 2000.0 | – | 30.0 | 500.0 | 2000.0 |
| H2CO | 1196.3 | 422.4 | 400.0 | 630.0 | 2000.0 | – | 80.0 | 250.0 | 200.0 |
| HCO+ | 875.4 | 746.7 | 200.0 | 200.0 | 800.0 | – | 20.0 | 160.0 | – |
| CH3OH | 849.9 | – | – | 1800.0 | 200.0 | 20 000.0 | 50.0 | 1260.0 | 790.0 |
| C4H | 656.7 | – | – | 1700.0 | 2000.0 | – | – | – | – |
| HNC | 509.2 | 116.8 | 60.0 | 250.0 | 2000.0 | – | 10.0 | 100.0 | 3200.0 |
| CH3CCH | 300.0 | – | – | 270.0 | 600.0 | 400.0 | – | 630.0 | 400.0 |
| c-C3H2 | 264.5 | 125.0 | 140.0 | 3600.0 | 1000.0 | 3.0 | 20.0 | 50.0 | 500.0 |
| CH3NH2 | 160.6 | – | – | – | – | 30 000.0 | – | – | – |
| SO | 128.1 | – | 150.0 | 3200.0 | 500.0 | 2000.0 | 80.0 | 130.0 | 100.0 |
| N2H+ | 116.6 | –33.4 | –0.4 | 100.0 | 50.0 | – | 3.0 | – | 60.0 |
| H2CCO | 88.3 | – | – | 110.0 | 100.0 | 20.0 | – | – | – |
| CH2NH | 74.5 | – | – | 1500.0 | – | 1000.0 | – | 80.0 | – |
| HCO | 65.0 | – | – | – | – | – | – | 280.0 | – |
| CH3CN | 65.0 | – | – | -110.0 | – | 3000.0 | – | 30.0 | – |
| CH3CHO | 62.0 | – | – | 1100.0 | 60.0 | 20.0 | – | – | – |
| NS | 57.5 | – | – | – | – | 1000.0 | – | 60.0 | – |
| HC3N | 55.9 | – | – | 50.0 | 600.0 | 500.0 | 3.0 | 60.0 | 100.0 |
| H2CS | 37.6 | – | – | 240.0 | 300.0 | 2000.0 | – | 60.0 | – |
| SiO | 37.5 | – | 10.0 | 10.0 | –0.3 | – | – | 13.0 | – |
| l-C3H | 35.7 | – | – | 500.0 | 50.0 | – | – | – | – |
| HNCO | 31.1 | – | – | 240.0 | 20.0 | 60.0 | – | 160.0 | 250.0 |
| C2S | 24.2 | – | – | 240.0 | 800.0 | – | – | 20.0 | – |
| HOC+ | 15.9 | – | 5.0 | – | – | – | – | 30.0 | – |
| H2CCN | 14.6 | – | – | – | 500.0 | 3.0 | – | – | – |
| l-C3H2 | 10.5 | – | – | 200.0 | – | – | – | – | – |
| SO+ | 8.4 | – | – | 100.0 | – | – | – | – | – |
Notes. Negative values represent an upper limit. H2 column densities of 2 × 1022 and 1 × 1021 cm-2 were assumed for FG0.89SW and FG0.89NE, respectively.
References. Diffuse clouds: Lucas & Liszt (2000a,b); Liszt & Lucas (2001); Lucas & Liszt (2002); Liszt et al. (2004); Translucent clouds: Turner (2000); TMC-1: Ohishi et al. (1992); SgrB2(N): Nummelin et al. (2000); LMC-N113: Wang et al. (2009), using N(H2) = 2 × 1022 cm-2; NGC 253: Martín et al. (2006); NGC 4945: Wang et al. (2004).
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