A low-temperature origin for the planetesimals that formed Jupiter
Article Abstract:
It has been established that argon, xenon and krypton in Jupiter's atmosphere are enriched to the same extent as the other heavy elements. This indicates that the planetesimals carrying these elements must have formed at temperatures lower than predicted by current models of giant-planet formation. It appears that the only explanation for the uniform enrichment of heavy elements seen on Jupiter is that these elements came from the planet in very cold icy planetesimals.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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Noble gases in atmospheres
Article Abstract:
T. Owen and colleagues' claim that martian and terrestrial noble gases may be related by a simple mixing process is supported by the data only if the slope of the graph were a unity which it is not. The similarity of martian and terrestrial noble gas abundances has yet to be explained. However, the hypothesis that the planets and a common external contributor were the sources of atmospheric noble gas is maintainable despite the logarithmic problem.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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Noble gases under pressure in the mantle
Article Abstract:
Research indicates that noble gases become increasingly isolated in a partially melted mantle and, despite expectations, are not dissolved. The gases krypton, xenon and argon are found in the pockets of a silicon oxide tetrahedral network deep in the earth. They become solidified. Scientists believe that the effect causes noble gases depletion in the earth's mantle.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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