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Fe-Deficiency in H-Deficient Post-AGB Stars Due to n-Capture Nucleosynthesis

Published online by Cambridge University Press:  26 May 2016

Falk Herwig ,
Maria Lugaro  and
Klaus Werner
Falk Herwig
Affiliation:
University of Victoria, Victoria, BC, Canada
Maria Lugaro
Affiliation:
IoA, University of Cambridge, Cambridge, UK
Klaus Werner
Affiliation:
Universität Tübingen, Tübingen, Germany

Abstract

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H-deficient post-AGB objects, e.g. PG1159 type star K1-16 and born-again AGB star Sakurai's object, have been reported to be significantly iron-deficient. We find that the iron deficiencies expected due to neutron-capture nucleosynthesis during either the progenitor AGB evolution and/or the neutron burst that occurs as a result of the rapid burning of protons during a post-AGB He-flash are generally in line with observations.

Type
Part III: Planetary Nebulae in the Scheme of Stellar Evolution
Information
Symposium - International Astronomical Union , Volume 209: Planetary Nebulae: Their Evolution and Role in the Universe , 2003 , pp. 85 - 86
Copyright
Copyright © Astronomical Society of the Pacific 2003 

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