Abundances (with respect to water) of relevant molecules measured for the three comets where HNCO and formamide have been observed.
|Species||Abundance (% of H2O)||References|
|CO||2.3||4.0||7.2||Bockelée-Morvan et al. (2000), Biver et al. (2014)|
|N2||0.013||0.023||0.041||estimated from Rubin et al. (2015)|
|HNCO||0.1||0.025||0.021||Bockelée-Morvan et al. (2000), Paganini et al. (2014a)|
|NH2HCO||0.02||0.06||0.021||Bockelée-Morvan et al. (2000), Biver et al. (2014)|
|NH3||1–1.8||≤0.63||≤1.86||Biver et al. (2014), Paganini et al. (2014a, b)|
|HNCO/N in N2||3.85||0.55||0.26|
|NH2HCO/N in N2||0.77||1.3||0.26|
Notes. The ratios of HNCO and formamide with respect to nitrogen atoms in N2 or in NH3 are also reported.
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