Open Access
Table 2
Abundances of DCO+, DNC, and DCN toward DR21, TMC-1, L134N, IRAS 16293–2422 (LM) and G210.82–19.47N (G210).
| DR21 | TMC-1 | L134N | LM | G210 | |
|---|---|---|---|---|---|
| X(DCO+) | 5.9 | 4 4 (a) | 9.0 (a) | 1.5 (b) | 0.37 (c) |
| X(DNC) | 6.5 | 71 (a) | 41 (a) | 0.5 (b) | 0.13 (c) |
| X(DCN) | 6.8 | 3.7 (a) | 27 (a) | 2.5 (b) | – |
Notes. The abundances are written in the form of x, where = x × 10 11. (a) Turner (2001) for TMC-1 and L134N. (b) van Dishoeck et al. (1995) for IRAS 16293–2422, (c) Tatematsu et al. (2020) for G210.82–19.47N.
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