Off-disk penetration of ancient solar wind

Details Off-disk penetration of ancient solar wind Off-disk penetration of ancient solar wind

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...91...29s&link_type=abstract

Icarus (ISSN 0019-1035), vol. 91, May 1991, p. 29-38.

Computer Science

11

Abundance, Interstellar Matter, Planetary Composition, Solar Planetary Interactions, Solar Wind, Lunar Soil, Meteoritic Composition, Optical Thickness, Rare Gases, Venus Atmosphere

Scientific paper

Following a suggestion by Wetherill (1981), an estimation is made of the capture of an ancient, intense solar wind by primordial dust. Because the mutual collision of planetesimals would generate additional dust grains in interplanetary space after the solar nebula's dissipation, the vertical distribution of the dust is taken into account. The solar wind penetrates the dust swarm through the less opaque off-disk portions, explaining both the trapping of a substantial quantity of solar wind species and the high abundances of solar-type noble gases in gas-rich meteorites and on Venus. The off-disk trap is efficient when the disk is opaque and its relative thickness does not diminish with increasing heliocentric distance.

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