Table 3.6
Mixing ratios relative to water for species detected in the infrared for nine comets. Values have been averaged where no mean has been given in the
reference
Species
45P/HMP
C/2017 E4
(Lovejoy)
C/2007
N3 (Lulin)
C/2012 K1
(PanSTARRS)
21P/
GiacobiniZinner
C/2012 F6
(Lemmon)
C/2013 R1
(Lovejoy)
C/1999 H1
Lee
103P/Hartley
2
Reference
Dello Russo
et al. (2020)
Faggi et al.
(2018)
Gibb et al.
(2012)
Roth et al.
(2017)
DiSanti
et al. (2013)
Paganini
et al. (2014b)
Paganini
et al. (2014a)
Dello Russo
et al. (2006)
Dello Russo
et al. (2011)
H
2 O
100
100
100
100
100
100
100
100
100
CH
3 OH
4.50
1.62
3.6
2.69
1.22
1.48
2.75
1.6
1.25
C
2 H
6
0.83
0.39
0.67
0.87
0.14
0.29
0.82
0.71
0.74
NH
3
0.74
1.86
0.28
<1.8
0.61
0.1
0.61
HCN
0.16
0.17
0.13
0.14
0.19
0.28
0.20
0.24
C
2 H
2
0.072
0.14
0.067
<0.11
<0.05
0.24
0.14
H
2 CO
0.145
0.36
0.15
<0.14
0.54
0.11
CH
4
0.97
0.34
1.15
0.46
0.67
1.05
1.13
CO
1.16
2.23
3.9
4.03
9.89
208
3 Gas Emissions Near the Nucleus