Chromium isotopic anomalies in the Allende meteorite

Details Chromium isotopic anomalies in the Allende meteorite Chromium isotopic anomalies in the Allende meteorite

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...308l..27p&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 308, Sept. 1, 1986, p. L27-L30.

Astronomy and Astrophysics

Astrophysics

47

Allende Meteorite, Chromium Isotopes, Meteoritic Composition, Anomalies, Calcium, Inclusions, Titanium

Scientific paper

Abundances of the chromium isotopes in terrestrial and bulk meteorite samples are identical to 0.01 percent. However, Ca-Al-rich inclusions from the Allende meteorite show endemic isotopic anomalies in chromium which require at least three nucleosynthetic components. Large anomalies at Cr-54 in a special class of inclusions are correlated with large anomalies at Ca-48 and Ti-50 and provide strong support for a component reflecting neutron-rich nucleosynthesis at nuclear statistical equilibrium. This correlation suggests that materials from very near the core of an exploding massive star may be injected into the interstellar medium.

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