Table 1 Abundance of molecules detected in comet Lovejoy.

Abundances relative to water of the 21 molecules detected in comet Lovejoy are based on the average of production rate ratios for the 13–16 and 23–25 January periods. The uncertainty on the abundances, taking into account all sources of errors, including uncertainty on the water production rate, is below 20%, except for NS for which it is 30% (4σ detection).

Abundances relative to water (%)
CHO moleculesNitrogenous moleculesSulfurated molecules
CO1.8HCN0.09H2S0.5
H2CO0.3HNC0.004OCS0.034
CH3OH2.4HNCO0.009H2CS0.013
HCOOH0.028CH3CN0.015CS0.043
(CH2OH)20.07HC3N0.002SO0.038
HCOOCH30.08NH2CHO0.008NS0.006
CH3CHO0.047
CH2OHCHO0.016
C2H5OH0.12