Chromium isotopic anomalies in the Allende meteorite

view Abstract Citations (115) References (23) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Chromium Isotopic Anomalies in the Allende Meteorite Papanastassiou, D. A. Abstract 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. Publication: The Astrophysical Journal Pub Date: September 1986 DOI: 10.1086/184737 Bibcode: 1986ApJ...308L..27P Keywords: Allende Meteorite; Chromium Isotopes; Meteoritic Composition; Anomalies; Calcium; Inclusions; Titanium; Lunar and Planetary Exploration; ABUNDANCES; METEORS AND METEORITES; NUCLEOSYNTHESIS full text sources ADS |