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Figure 1: The rate coefficient data in RATE06 (dark) is more accurate, and based on more laboratory measurements than RATE99 (light). The panels show a comparison of the numbers of reactions versus their data source ( left) and quoted accuracy ( right), between the two releases. |
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Figure 2: The time evolution of the major sulphur-bearing species with RATE99 ( left) and with RATE06 ( right). |
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Figure 3: The time evolution of the major oxygen-bearing species without ( left) and with ( right) dipole-enhanced rate coefficients in Rate06. |
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Figure 4: The time evolution of the major sulfur-bearing species without ( left) and with ( right) dipole-enhanced rate coefficients in Rate06. |
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Figure 5: The time evolution of the major sulphur-bearing species with ( left) the rate coefficient for the O + OH reaction taken from Smith et al. (2004) and with ( right) the value taken from Carty et al. (2006). Both model calculations use dipole-enhanced rate coefficients. |
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Figure 6: The time evolution of the methanol abundance for various choices of key rate coefficients. The curves calculated using the latest RATE06 rate coefficients are labelled "RATE06'' and "RATE06-dipole'' for the non-dipole and dipole versions respectively. The curve labelled "RATE99'' uses the rate coefficients for the radiative association of CH3+ and H2O and the dissociative recombination of CH3OH2+ from that database. |
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