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Fe-deficiency in H-deficient post-AGB stars due to n-capture nucleosynthesis

Falk Herwig·Maria Lugaro·Klaus Werner
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Abstract

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.

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Falk Herwig, Maria Lugaro, Klaus Werner. 2002-02-07. Fe-deficiency in H-deficient post-AGB stars due to n-capture nucleosynthesis. https://arxiv.org/abs/astro-ph/0202143

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