Compositional constraints on giant planet formation

Details Compositional constraints on giant planet formation Compositional constraints on giant planet formation

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006p%26ss...54.1188o&link_type=abstract

Planetary and Space Science, Volume 54, Issue 12, p. 1188-1196.

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Scientific paper

Using Ockham's razor as a guide, we have tried to find the simplest model for the formation of giant planets that can explain current observations of atmospheric composition. While this “top-down” approach is far from sufficient to define such models, it establishes a set of boundary conditions whose satisfaction is necessary. Using Jupiter as the prototype, we find that a simple model for giant planet formation that begins with a solar nebula of uniform composition and relies on accretion of low temperature icy planetesimals plus collapse of surrounding solar nebula gas supplies that satisfaction. We compare the resulting predictions of elemental abundances and isotope ratios in the atmospheres of the other giants with those from contrasting models and suggest some key measurements to make further progress.

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