Computer Science
Scientific paper
Apr 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.338....3l&link_type=abstract
In ESA, Symposium on Titan p 3-7 (SEE N92-32348 23-91)
Computer Science
Interstellar Gas, Planetary Evolution, Planetary Nebulae, Satellite Atmospheres, Saturn (Planet), Saturn Atmosphere, Titan, Deuterium, Jupiter (Planet), Photochemical Reactions, Protoplanets
Scientific paper
Three of the current issues associated with the formation of the Saturn system which involve significant controversy and uncertainty and which bear on the formation of Titan itself are outlined: the notion that the formation of Jupiter and Saturn are well constrained is challenged by recent internal models, which suggest possible significant differences in the composition of planetesimals which formed the two bodies; the composition of volatile ices which was the source of the Saturnian satellites was likely a complex mix of relatively pristine solids from the collapsing interstellar cloud, gas and solid material processed in the solar nebula and material chemically processed in a nebula around Saturn or in the primitive Saturn atmosphere itself; the deuterium enhancement in Titan's atmosphere, which initially appeared to be sufficiently large that it must be a signature of pristine interstellar material, could in fact be largely due to photochemical evolution of Titan's atmosphere.
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