Table 9: Abundance ratios of C₃H₄ to C₂H₂ and C₂H₆.
Q(C₃H₄)/Q(C₂H₂) = 0.65 $\pm$ 0.37

Q(C₃H₄)/Q(C₂H₆) = 0.28 $\pm$ 0.18

**Table 9:** Abundance ratios of C₃H₄ to C₂H₂ and C₂H₆.
Q(C₃H₄)/Q(C₂H₂)	=	0.65 $\pm$ 0.37
Q(C₃H₄)/Q(C₂H₆)	=	0.28 $\pm$ 0.18

Article Contents

	1 Introduction
	2 The coma chemistry model
	3 Coma profiles used for the analysis
	4 The chemistry of possible C₂ and C₃ parents
	5 The main chemical reaction network for the formation of C₂ and C₃
	6 Model input: the nucleus - properties and composition
	7 Deriving the production rates
	8 Production rates for C₂H₂, C₂H₆ and C₃H₄
	9 Error discussion
	10 Abundance ratios relative to water and carbon monoxide
	11 Abundance ratios relative to acetylene
	12 Clues on the formation region of comet Hale-Bopp
	13 Summary
	References
	Online Material

	List of tables
	List of figures