All Tables

Table 1: List of measurements of CH₄ abundances in Saturn's atmosphere published since 1981.
Table 2: Gas phase abundances (molar mixing ratio with respect to H₂) of major species in the solar nebula (from Lodders 2003) for CO₂:CO:CH₄ = 30:10:1 and N₂:NH₃ = 1.
Table 3: Calculations of the ratios of trapped masses of volatiles to the mass of H₂O ice in planetesimals formed at 9.8 and 12 AU in the solar nebula. Gas-phase abundance of H₂O is equal to $8.11 \times 10^{-4}$ ( $\sim$ 4.9 times the value quoted in Table 2; see text), and gas-phase abundances of elements are assumed to be solar (Lodders 2003) with CO₂:CO:CH₄ = 30:10:1 and with N₂:NH₃ = 1 in vapor phase in the solar nebula. The abundance of H₂S is subsolar (see text).
Table 4: Observed C and N enrichments in Saturn, and calculated enrichments in volatiles in the nominal model (CO₂:CO:CH₄ = 30:10:1 and N₂:NH₃ = 1).
Table 5: Minimum mass of accreted water ( $M_{\rm water}$ ), minimum mass of accreted ices ( $M_{\rm ices}$ ) and corresponding minimum O/H abundance (compared to solar value) in Saturn's atmosphere required to fit the observed C enrichments. Calculations are presented for the minimum fits of both KAO C and ground-based N measurements (Kerola et al. 1997; Briggs & Sackett 1989) and Cassini C measurement (Flasar et al. 2005) in Saturn's atmosphere. Ranges of CO₂:CO:CH₄ and N₂:NH₃ gas-phase ratios used here are those determined by A05c (see text).