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Cited by 320Stellar, planetary, and galactic studiesAstronomy and Astrophysical ResearchGamma-ray bursts and supernovae

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The Elemental Abundances in Bare Planetary Nebula Central Stars and the Shell Burning in AGB Stars

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Werner, Klaus, Herwig, Falk·2006·Publications of the Astronomical Society of the Pacific
DOI 10.1086/500443
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Abstract

We review the observed properties of extremely hot, hydrogen‐deficient post–asymptotic giant branch (AGB) stars of spectral type [WC] and PG1159. Their H deficiency is probably caused by a (very) late helium‐shell flash or an AGB final thermal pulse, laying bare interior stellar regions that are usually kept hidden below the hydrogen envelope. Thus, the photospheric elemental abundances of these stars allow us to draw conclusions about details of nuclear burning and mixing processes in the precursor AGB stars. We summarize the state of the art of stellar evolution models that simulate AGB evolution and the occurrence of a late He‐shell flash. We compare predicted elemental abundances to those determined by quantitative spectral analyses performed with advanced non‐LTE model atmospheres. Good qualitative and quantitative agreement is found. Future work can contribute to an even more complete picture of the nuclear processes in AGB stars.

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Metadata

Authors
Werner, K., & Herwig, F.
Affiliations
  • University of Tübingen (DE)
  • Los Alamos National Laboratory (US)
ORCID
Venue
Publications of the Astronomical Society of the Pacific
Publisher
IOP Publishing
Published
2006-02
Volume
118
Issue
840
Pages
183-204
ISSN
  • 0004-6280 (ISSN-L)
  • 1538-3873
DOI
10.1086/500443
OpenAlex
W2008629632
Cited by
320
References
0
Citations by year
2026: 3 · 2025: 13 · 2024: 11 · 2023: 15 · 2022: 19 · 2021: 11 · 2020: 15 · 2019: 14 · 2018: 12 · 2017: 8 · 2016: 21 · 2015: 14 · 2014: 17 · 2013: 16 · 2012: 13
FWCI
15.72
Type
journal article
Language
en
Open access
Locations
  • Publications of the Astronomical Society of the Pacific (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Physics and Astronomy › Instrumentation › Astronomy and Astrophysical Research
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Gamma-ray bursts and supernovae
Keywords
central stars of planetary nebulae, post-AGB stars, WC stars, PG 1159 stars, hydrogen-deficient stars, helium shell flash, stellar nucleosynthesis, stellar mixing, non-LTE model atmospheres, chemical abundances

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