An alternative explanation of the evolution of element abundance ratios during the history of the Galaxy

Details An alternative explanation of the evolution of element abundance ratios during the history of the Galaxy An alternative explanation of the evolution of element abundance ratios during the history of the Galaxy

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.251p..33e&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 251, July 15, 1991, p. 33P-36P.

Astronomy and Astrophysics

Astronomy

16

Abundance, Galactic Evolution, Metallicity, Milky Way Galaxy, Nuclear Reactions, Stellar Composition, Binary Stars, Calcium, Iron, Oxygen, Supernovae

Scientific paper

It is well established that stellar element abundances show a variation of some ratios, such as oxygen to iron and calcium to iron, with all overall metallicity of the star. This has been ascribed to a time-delay effect due to the different mean lifetimes of the stars and binaries that give rise to Type II and Type I supernovae. It is proposed that this identification may be premature, and that the observations could equally well be explained by a pseudosecondary behavior in the nucleosynthesis of iron.

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