Could SiC A+B grains have originated in a post-AGB thermal pulse?

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dc.creatorHerwig, Falk
dc.creatorAmari, Sachiko
dc.creatorLugaro, Maria
dc.creatorZinner, Ernst
dc.date2002-02-07
dc.date.accessioned2026-07-07T02:02:43Z
dc.date.available2026-07-07T02:02:43Z
dc.descriptionThe carbon and nitrogen isotopic ratios of pre-solar SiC grains of type A+B suggest a proton-limited nucleosynthetic process as encountered, for instance, during the very late thermal pulse of post-AGB stars. We study the nuclear processes during this phase and find carbon and nitrogen isotopic ratios which can reproduce those of A+B grains. These results are still preliminary because they depend on uncertain factors such as the details of mixing during the post-AGB thermal pulse, the rates of some nuclear reactions, and the assumptions on mixing during the progenitor AGB phase.
dc.description2 pages, 2 figures, poster presented at IAU Symp 209 "Planetary Nebulae"
dc.identifierhttps://arxiv.org/abs/astro-ph/0202167
dc.identifierhttp://arxiv.org/abs/astro-ph/0202167
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/4142
dc.subjectAstrophysics
dc.titleCould SiC A+B grains have originated in a post-AGB thermal pulse?
dc.typetext

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