On the chemical composition of the moon, Jupiter, meteorites and Am stars

Details On the chemical composition of the moon, Jupiter, meteorites and Am stars On the chemical composition of the moon, Jupiter, meteorites and Am stars

Apr 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975e%26psl..25..368d&link_type=abstract

Earth and Planetary Science Letters, vol. 25, no. 3, Apr. 1975, p. 368-378.

Computer Science

4

A Stars, Abundance, Chemical Composition, Jupiter (Planet), Lunar Composition, Meteoritic Composition, Planetary Composition, Mass Transfer, Planetary Evolution, Planetary Mass, Planetary Structure, Planetary Systems, Solar System, Stellar Evolution, Surface Layers

Scientific paper

Based on the concept that planetary systems represent a limiting case of multiple star systems and are a byproduct of their evolution, it is proposed that some surface anomalies in the composition of Am stars may be due to large planetoids precipitating on them and some general conclusions are drawn concerning the validity of the standard abundance of elements in the solar system. An anticorrelation is found between the chemical composition of Am stars and meteorites and is explained with a discussion on the early and terminal stages of the formation of the solar system, in particular the origins of the moon and Jupiter. It is concluded that the Am phenomenon may be due to geochemical processes of matter differentiation in large planetoids rather than to stellar processes, that the sun's outer layers may differ somewhat in composition from its bulk matter, and that the standard abundances for some elements heavier than iron should be revised on the basis of Am star data.

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