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Table 4

Mixing ratios of the C3 parent species and the C2 parent species for comet Hale-Bopp (Dec. 19/20, 1997).

Species This work H05 DelloRusso et al. (2001)

C3H4 0.029 0.014  ±  0.008 n.a.
C2H2 0.048 0.017  ±  0.006  ~0.03–0.05
C2H6 0.012 0.025  ±  0.020 0.055 ± 0.010

Notes. Production rates with respect to water derived in this work are presented and compared with the results from H05. The values according to DelloRusso et al. (2001) are based on their extrapolations of their production rates of C2H2 and C2H6 to the heliocentric distance of 3.78 AU.

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