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Enrichment of s-Process Elements in the Progenitor of SN 1987A

Published online by Cambridge University Press:  12 April 2016

R.E. Williams
R.E. Williams*
Affiliation:
Cerro Tololo Inter-American Observatory National Optical Astronomy Observatories Casilla 603, La Serena, CHILE

Abstract

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Existing calculations of s-process nucleosynthesis in massive stars such as Sk −69° 202 show enhancements in the He-burning shells which, when mixed to the surface, lead to Sc, Sr, and Ba enrichments of factors of 2 to 15. Abundances derived from the supernova absorption lines using a simple scattering model yield enhancements of this magnitude. Thus, the observed and predicted s-process abundances are roughly in accord, although the Ba/Sr ratio derived for the supernova may be higher than the s-process can account for.

Type
Part III. Chemical and Dynamical Structures of Exploding Stars
Information
International Astronomical Union Colloquium , Volume 108: Atmospherics Diagnostics of Stellar Evolution: Chemical Peculiarity, Mass Loss, and Explosion , 1988 , pp. 274 - 280
Copyright
Copyright © Springer-Verlag 1988

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