The case for chondrules and CAI being rare in the early solar system - Some implications for astrophysical models

Details The case for chondrules and CAI being rare in the early solar system - Some implications for astrophysical models The case for chondrules and CAI being rare in the early solar system - Some implications for astrophysical models

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28.1273s&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 273.

Astronomy and Astrophysics

Astronomy

4

Chondrule, Solar System Evolution, Astronomical Models, Meteoritic Composition, Asteroid Belts, Planetary Surfaces, Solar Corona, Spectral Reflectance, Earth Surface

Scientific paper

The abundance of chondrules (and CAI) is often considered a major constraint on models for the early solar nebula. While this may be true, it is also possible that these high-temperature meteoritic components are rare and that observational biases caused by passage through the atmosphere and ejection mechanisms in the asteroid belt cause us to overemphasize the role of the chondrules in nebula processes. Consistent with this, asteroid reflectivity spectra suggest that ordinary chondritelike asteroids are rare, even assuming that space weathering has altered their surfaces. It is possible that small localized stochastic events were responsible for the formation of chondrules and that the implications for nebulawide processes in the early solar system are very limited.

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