All Tables

Table 1: Subset of the data from Rauer et al. (2003) used for analysis with the ComChem model. The first column gives the date of the observation, $r_{\rm h}$ (negative for pre-perihelion) and $\Delta$ are the heliocentric and geocentric distance of the comet, the fourth column gives the telescope and instrument used, the fifth column denotes how many spectra have been averaged in the observing run, the sixth column shows the resulting total integration time, $\Delta \rho$ is the spatial resolution of the profiles and the last column lists comments on the observations.
Table 2: Reaction rate coefficients for reaction R₁ and R₂ estimated by Boice et al. (1986).
Table 3: Derived reaction rates for reactions R₃ and R₄ normalized to $r_{\rm h}=1$ AU by $r_{\rm h}^{-2}$ .
Table 5: Production rates for C₂H₂, C₂H₆ and C₃H₄ derived in this work - Negative heliocentric distances refer to preperihelion measurements.
Table 6: Summary of the upper limits for the quantitative errors.
Table 7: Abundance ratios in comet Hale-Bopp relative to carbon monoxide derived in this work and upper limits for the abundance ratios relative to CO of solid acetylene and ethane in NGC 7538:IRS9 derived by Boudin et al. (1998).
Table 8: Abundance ratio of ethane relative to acetylene derived in this work and for some comets (Dello Russo et al. 2001).
Table 9: Abundance ratios of C₃H₄ to C₂H₂ and C₂H₆.
Table 4: The main reactions and their reaction rates. The $\dagger$ marks reactions for which rate coefficients have been derived in this work. Coefficients which have been derived during this work are printed in bold, while previous estimates for these coefficients are printed in italics.