Table 5: Production rates for C₂H₂, C₂H₆ and C₃H₄ derived in this work - Negative heliocentric distances refer to preperihelion measurements.
Distance C₂H₂ C₂H₆ C₃H₄

[AU] [10²⁵ s^-1] [10²⁵ s^-1] [10²⁵ s^-1]

-3.39 120. $\pm$ 43.3 360. $\pm$ 178. 66.2 $\pm$ 40.1

-2.86 260. $\pm$ 91.6 520. $\pm$ 268. 20.2 $\pm$ 13.3

3.66 112. $\pm$ 39.1 340. $\pm$ 177. 54.6 $\pm$ 32.8

3.78 69.5 $\pm$ 24.2 100. $\pm$ 78.2 55.8 $\pm$ 33.7

4.1 82.5 $\pm$ 33.5 164. $\pm$ 127. 102. $\pm$ 70.2

4.14 77.3 $\pm$ 26.5 219.7 $\pm$ 117. 43.0 $\pm$ 26.5

4.74 64.3 $\pm$ 22.8 196.0 $\pm$ 108. 65.2 $\pm$ 41.1

**Table 5:** Production rates for C₂H₂, C₂H₆ and C₃H₄ derived in this work - Negative heliocentric distances refer to preperihelion measurements.
Distance	C₂H₂	C₂H₆	C₃H₄
[AU]	[10²⁵ s^-1]	[10²⁵ s^-1]	[10²⁵ s^-1]
-3.39	120. $\pm$ 43.3	360. $\pm$ 178.	66.2 $\pm$ 40.1
-2.86	260. $\pm$ 91.6	520. $\pm$ 268.	20.2 $\pm$ 13.3
3.66	112. $\pm$ 39.1	340. $\pm$ 177.	54.6 $\pm$ 32.8
3.78	69.5 $\pm$ 24.2	100. $\pm$ 78.2	55.8 $\pm$ 33.7
4.1	82.5 $\pm$ 33.5	164. $\pm$ 127.	102. $\pm$ 70.2
4.14	77.3 $\pm$ 26.5	219.7 $\pm$ 117.	43.0 $\pm$ 26.5
4.74	64.3 $\pm$ 22.8	196.0 $\pm$ 108.	65.2 $\pm$ 41.1

Source LaTeX | All tables | In the text

	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