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

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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.
2 pages, 1 figure, paper presented at IAU Symp 209 "Planetary Nebulae"

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http://salesiana.dossiersoluciones.com/handle/123456789/4136

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/astro-ph/0202143
 http://arxiv.org/abs/astro-ph/0202143

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arXiv