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Heavy elements in planetary nebulae: A theorist's gold mine

Published online by Cambridge University Press:  30 August 2012

Amanda I. Karakas  and
Maria Lugaro
Amanda I. Karakas
Affiliation:
Research School of Astronomy & Astrophysics, Mount Stromlo Observatory, Weston Creek ACT 2611, Australia email: [email protected]
Maria Lugaro
Affiliation:
Monash Centre for Astrophysics (MoCA), Monash University, Clayton VIC 3800, Australia email: [email protected]
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Abstract

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Observations of planetary nebulae have revealed a wealth of information about the composition of heavy elements synthesized by the slow neutron capture process (the s process). In some of these nebulae the abundances of neutron-capture elements are enriched by factors of 10 to 30 times the solar value, indicating that these elements were produced in the progenitor star while it was on the asymptotic giant branch (AGB). In this proceedings we summarize results of our recent full s-process network predictions covering a wide range of progenitor masses and metallicities. We compare our model predictions to observations and show how this can provide important insights into nucleosynthesis processes occurring deep within AGB stars.

Keywords

Nuclear reactionsnucleosynthesisabundancesstars: AGB and post-AGBstars: abundancesplanetary nebulae: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S283: Planetary Nebulae: An Eye to the Future , July 2011 , pp. 127 - 130
Copyright
Copyright © International Astronomical Union 2012

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