Table 3
Column density of the normal and singly and doubly deuterated isotopologues of c-C3H2, H2CO, and H2CS, and their deuteration ratios towards the dust peak of L1544.
| Column densities (1012 cm−2) | |||||
|---|---|---|---|---|---|
| c-C3H2 | 37(1) | H2CO | 36(23) | H2CS | 6.9(6) |
| c-C3HD | 6.2(3) | HDCO | 1.30(9) | HDCS | 0.8(1) |
| c-C3D2 | 0.66(2) | D2CO | 1.5(3) | D2CS | 0.80(8) |
| Column density ratios | |||||
| c-C3HD/c-C3H2 | 17(1)% | HDCO/H2CO | 4(2)% | HDCS/H2CS | 12(2)% |
| c-C3D2/c-C3H2 | 1.7(1)% | D2CO/H2CO | 4(3)% | D2CS/H2CS | 12(2)% |
| c-C3D2/c-C3HD | 10(1)% | D2CO/HDCO | 115(10)% | D2CS/HDCS | 100(16)% |
Notes. The column densities of H2CO and c-C3H2 were calculated from the column density of the 13C isotopologues, assuming a 12C/13C ratio of 68. Numbers in parentheses denote 1σ uncertainties in units of the last quoted digit.
References. c-C3H2 and isotopologues from Spezzano et al. (2013), H2CO and isotopologues from Chacón-Tanarro et al. (2019), and H2CS and isotopologues from this work.
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