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12C/13C ratios and Li abundances in C stars: evidence for deep mixing?
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Most C-rich AGB stars have 12C/13C ratios between about 30 and 80, but a small number with ratios below 30 cannot be explained by lowering the RGB ratio.
“Whereas most C-rich AGB stars have 12 C/ 13 C ratios between about 30 and 80, there is a small number with 12 C/ 13 C ratios below 30 (e.g., Lambert et al. 1986; Abia & Isern 1997) that cannot be explained using the method above.”
From The Dawes Review 2: Nucleosynthesis and Stellar Yields of Low- and Intermediate-Mass Single Stars (2014) · cites this paper as Abia & Isern 1997
The C and N abundances predicted by models do not match those observed in AGB stars.
“The C and N abundances predicted by models do not match those observed in AGB stars (e.g., Lambert et al. 1986; Abia & Isern 1997; Milam, Woolf, & Ziurys 2009).”
From The Dawes Review 2: Nucleosynthesis and Stellar Yields of Low- and Intermediate-Mass Single Stars (2014) · cites this paper as Abia & Isern 1997
The C isotopic ratios measured in AGB stars span a large range, from very low 12C/13C ratios of ≈4 to a maximum of about 100.
“The C isotopic ratios measured in AGB stars span a large range, from very low 12 C/ 13 C ratios of ≈ 4 to a maximum of about 100 (Lambert et al. 1986; Abia & Isern 1997).”
From The Dawes Review 2: Nucleosynthesis and Stellar Yields of Low- and Intermediate-Mass Single Stars (2014) · cites this paper as Abia & Isern 1997
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The Dawes Review 2: Nucleosynthesis and Stellar Yields of Low- and Intermediate-Mass Single Stars
Karakas, A. I., & Lattanzio, J. C. (2014) · Publications of the Astronomical Society of Australia · doi:10.1017/pasa.2014.21 · Cited by 735
“Whereas most C-rich AGB stars have 12C/13C ratios between about 30 and 80, there is a small number with 12C/13C ratios below 30 (e.g. Lambert et al. 1986; Abia & Isern 1997) that cannot be explained using the method above.”
BackgroundMethodStellar Models and Yields of Asymptotic Giant Branch Stars
Karakas, A., & Lattanzio, J. C. (2007) · Publications of the Astronomical Society of Australia · doi:10.1071/as07021 · Cited by 312
Metadata
- Authors
- Abia, C., & Isern, J.
- Affiliations
- Universidad de Granada (ES)
- Consejo Superior de Investigaciones Científicas (ES)
- Venue
- Monthly Notices of the Royal Astronomical Society
- Publisher
- Oxford University Press (OUP)
- Published
- 1997-08
- Volume
- 289
- Issue
- 4
- Pages
- L11-L15
- ISSN
- 0035-8711 (ISSN-L)
- 1365-2966
- OpenAlex
- W2070693188
- Cited by
- 77
- References
- 0
- Citations by year
- 2025: 2 · 2024: 4 · 2023: 1 · 2021: 1 · 2018: 3 · 2017: 1 · 2016: 5 · 2014: 2 · 2013: 3 · 2012: 4
- FWCI
- 1.96
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Monthly Notices of the Royal Astronomical Society (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astrophysics and Star Formation Studies
- Physical Sciences › Physics and Astronomy › Instrumentation › Astronomy and Astrophysical Research
- Keywords
- C stars, carbon stars, 13C/12C isotope ratio, lithium abundance, deep mixing, stellar nucleosynthesis
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
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