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Title: {sup 26}Al IN THE EARLY SOLAR SYSTEM: NOT SO UNUSUAL AFTER ALL

Recently acquired evidence shows that extrasolar asteroids exhibit over a factor of 100 variation in the iron to aluminum abundance ratio. This large range likely is a consequence of igneous differentiation that resulted from heating produced by radioactive decay of {sup 26}Al with an abundance comparable to that in the solar system's protoplanetary disk at birth. If so, the conventional view that our solar system began with an unusually high amount of {sup 26}Al should be discarded.
Authors:
;  [1] ;  [2]
  1. Department of Physics and Astronomy, University of California, Los Angeles, CA 90095-1562 (United States)
  2. Department of Earth and Space Sciences, University of California, Los Angeles, CA 90095 (United States)
Publication Date:
OSTI Identifier:
22215451
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 775; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ABUNDANCE; ALUMINIUM 26; ASTEROIDS; HEATING; IRON; PROTOPLANETS; SOLAR SYSTEM; VARIATIONS; WHITE DWARF STARS