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Title: Large negative Ti-50 anomalies in refractory inclusions from the Murchison carbonaceous chondrite - evidence for incomplete mixing of neutron-rich supernova ejecta into the solar system

Abstract

An ion microprobe was used to measure Ti-50 variations in hibonite-rich inclusions from the Murchison chondrite. Both deficits and excesses of the isotope were found, depending on the inclusion being scanned. The anomalies were not correlated with the mineralogy, chemical composition, other isotopic anomalies of Ti, etc. The lack of correlations indicates that the cosmic chemical memory model (Clayton, 1981) cannot explain the observed variations. The Ti-50 concentrations may have originated when a supernova explosion triggered the collapse of a molecular cloud that formed the solar system. The solar system Ti-50 anomalies were from the cloud, not the progenitor star. 53 references.

Authors:
; ;
Publication Date:
Research Org.:
Chicago Univ., IL
OSTI Identifier:
6405208
Resource Type:
Journal Article
Journal Name:
Astrophys. J.; (United States)
Additional Journal Information:
Journal Volume: 313
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CHONDRITES; CHEMICAL COMPOSITION; SOLAR SYSTEM; COSMIC GASES; MATHEMATICAL MODELS; REFRACTORY METALS; SUPERNOVA REMNANTS; TITANIUM ISOTOPES; ALLOYS; COSMIC RADIO SOURCES; ELEMENTS; FLUIDS; GASES; ISOTOPES; METALS; METEORITES; STONE METEORITES; 640107* - Astrophysics & Cosmology- Planetary Phenomena

Citation Formats

Hinton, R W, Davis, A M, and Scatena-Wachel, D E. Large negative Ti-50 anomalies in refractory inclusions from the Murchison carbonaceous chondrite - evidence for incomplete mixing of neutron-rich supernova ejecta into the solar system. United States: N. p., 1987. Web. doi:10.1086/164980.
Hinton, R W, Davis, A M, & Scatena-Wachel, D E. Large negative Ti-50 anomalies in refractory inclusions from the Murchison carbonaceous chondrite - evidence for incomplete mixing of neutron-rich supernova ejecta into the solar system. United States. https://doi.org/10.1086/164980
Hinton, R W, Davis, A M, and Scatena-Wachel, D E. 1987. "Large negative Ti-50 anomalies in refractory inclusions from the Murchison carbonaceous chondrite - evidence for incomplete mixing of neutron-rich supernova ejecta into the solar system". United States. https://doi.org/10.1086/164980.
@article{osti_6405208,
title = {Large negative Ti-50 anomalies in refractory inclusions from the Murchison carbonaceous chondrite - evidence for incomplete mixing of neutron-rich supernova ejecta into the solar system},
author = {Hinton, R W and Davis, A M and Scatena-Wachel, D E},
abstractNote = {An ion microprobe was used to measure Ti-50 variations in hibonite-rich inclusions from the Murchison chondrite. Both deficits and excesses of the isotope were found, depending on the inclusion being scanned. The anomalies were not correlated with the mineralogy, chemical composition, other isotopic anomalies of Ti, etc. The lack of correlations indicates that the cosmic chemical memory model (Clayton, 1981) cannot explain the observed variations. The Ti-50 concentrations may have originated when a supernova explosion triggered the collapse of a molecular cloud that formed the solar system. The solar system Ti-50 anomalies were from the cloud, not the progenitor star. 53 references.},
doi = {10.1086/164980},
url = {https://www.osti.gov/biblio/6405208}, journal = {Astrophys. J.; (United States)},
number = ,
volume = 313,
place = {United States},
year = {Sun Feb 01 00:00:00 EST 1987},
month = {Sun Feb 01 00:00:00 EST 1987}
}