Open Access

Table F.1

Ice column densities corresponding to the best fit of the IRAS 18089 spectrum.

Species Name N (1017 cm-2)
H2O water 282.3 ± 70.5
CH4 methane 5.3 ± 1.3
SO2 sulfur dioxide 0.3 ± 0.1
OCN- cyanate ion 5.3 ± 1.5
NH4+ ammonium ion 33.0 ± 4.0
HCOO- formate ion 1.1 ± 0.3
H2CO formaldehyde 28.2 ± 7.1
CH3OH methanol 50.4 ± 12.7
HCOOH formic acid 2.9 ± 0.7
CH3CHO acetaldehyde 1.9 ± 0.5
CH3CH2OH ethanol 4.2 ± 1.1
CH3OCHO methyl formate 0.9 ± 0.2
CH3COOH acetic acid <2
CH3OCH3 dimethyl ether 2.8 ± 0.7
CH3COCH3 acetone 0.7 ± 0.2

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