Galactic Age Estimates from O-rich Stardust in Meteorites

dc.contributor.author	Nittler, L. R
dc.contributor.author	Cowsik, R
dc.date.accessioned	2008-09-01T09:46:38Z
dc.date.available	2008-09-01T09:46:38Z
dc.date.issued	1997-01
dc.identifier.citation	Physical Review Letters, Vol. 78, No. 2, pp. 175 - 178	en
dc.identifier.issn	0031-9007
dc.identifier.uri	http://hdl.handle.net/2248/3294
dc.description.abstract	The sup16Osup/17 supO and sup16O/sup18O ratios of refractory oxide grains extracted from primitive meteorites suggest that they originated in low-mass red giant stars prior to the formation of the Solar System 4.6×10/sup9 years ago. Detailed comparison of the isotopic compositions of the grains with models of stellar evolution and galactic chemical evolution imply that the age of the Galaxy is 14.4 Gyr with a statistical error of +/-1.3 Gyr. Systematic uncertainties are of order several Gyr, however, and are primarily due to inadequacies in present theoretical modeling.	en
dc.language.iso	en	en
dc.publisher	The American Physical Society	en
dc.relation.uri	http://link.aps.org/abstract/PRL/v78/p175	en
dc.subject	Solar System	en
dc.subject	Isotopic Compositions	en
dc.subject	Stellar Evolution	en
dc.subject	Galactic Chemical Evolution	en
dc.subject	Galaxy	en
dc.title	Galactic Age Estimates from O-rich Stardust in Meteorites	en
dc.type	Article	en