Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...231..236m&link_type=abstract
Astrophysical Journal, Part 1, vol. 231, July 1, 1979, p. 236-249. Research supported by the Shirley Farr Fund
Astronomy and Astrophysics
Astrophysics
14
Abundance, Isotopes, Meteoritic Composition, Solar Corona, Solar System, Abnormalities, Hydrodynamics, Hydrogen Atoms, Hydrogen Clouds, Supernova Remnants, Taylor Instability
Scientific paper
The effectiveness of injecting material from outside the solar system into the early solar nebula was studied. Hydrodynamic calculations showed that the conditions of external injection of isotopically anomalous matter resemble a supernova remnant shell impacting an interstellar H I cloud. Since the injection process for grains or gas is determined before the impinging material penetrates a skin layer, the results for an H I edge should be valid for any configuration which joins the interstellar medium with an H I boundary zone. The effects of initial injection velocity, gas cooling, and magnetic fields are considered, and it is shown that grain penetration is limited to a layer with column density on the order of the grain mass/area ratio and that Rayleigh-Taylor instabilities are not expected to be effective at mixing the anomalous matter into the nebula during a cloud/shell interaction.
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