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FLUORINE ABUNDANCES IN GALACTIC ASYMPTOTIC GIANT BRANCH STARS
Open accessAbstract
An analysis of the fluorine abundance in Galactic asymptotic giant branch (AGB) carbon stars (24 N-type, 5 SC-type, and 5 J-type) is presented. This study uses the state-of-the-art carbon-rich atmosphere models and improved atomic and molecular line lists in the 2.3 μm region. Significantly lower F abundances are obtained in comparison to previous studies in the literature. This difference is mainly due to molecular blends. In the case of carbon stars of SC-type, differences in the model atmospheres are also relevant. The new F enhancements are now in agreement with the most recent theoretical nucleosynthesis models in low-mass AGB stars, solving the long-standing problem of F in Galactic AGB stars. Nevertheless, some SC-type carbon stars still show larger F abundances than predicted by stellar models. The possibility that these stars are of larger mass is briefly discussed.
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Re-analysis by Abia et al. (2010) found the cause of the F discrepancy to be model atmospheres that did not properly account for blending with C-bearing molecules; new abundances are up to 0.8 dex lower, bringing models into agreement with observations.
“Are-analysis of the F abundance in three Galactic AGB stars (TX Psc, AQ Sgr, and R Scl) by Abia et al. (2010) revealed the cause of the discrepancy to be the model atmospheres used in the original analysis, which did not properly take into account blending with C-bearing molecules. The new abundances are up to 0.8 dex lower, bringing the models into agreement with the observations.”
From The Dawes Review 2: Nucleosynthesis and Stellar Yields of Low- and Intermediate-Mass Single Stars (2014) · cites this paper as Abia et al. (2010)
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Cited by
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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
“Fluorine has been observed in AGB stars in our Galaxy and in Local Group Galaxies (Jorissen et al. 1992; Lebzelter et al. 2008; Abia et al. 2009, 2010), PG 1159 post-AGB stars and PNe (Werner et al. 2005; Otsuka et al. 2008), and in barium stars (Alves-Brito et al. 2011), which are hypothesised to…”
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Metadata
- Authors
- Abia, C., Cunha, K., Cristallo, S., de Laverny, P., Domínguez, I., Eriksson, K., Gialanella, L., Hinkle, K., Imbriani, G., Recio-Blanco, A., Smith, V. V., Straniero, O., & Wahlin, R.
- Affiliations
- Universidad de Granada (ES)
- Centre National de la Recherche Scientifique (FR)
- Uppsala University (SE)
- Istituto Nazionale di Fisica Nucleare, Sezione di Napoli (IT)
- University of Naples Federico II (IT)
- Corresponding author
- Abia, C.
- ORCID
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2010-05-05
- Volume
- 715
- Issue
- 2
- Pages
- L94-L98
- ISSN
- 2041-8205 (ISSN-L)
- 2041-8213
- OpenAlex
- W2108571343
- Cited by
- 82
- References
- 0
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 4 · 2023: 4 · 2022: 2 · 2021: 2 · 2020: 4 · 2019: 3 · 2018: 5 · 2017: 4 · 2016: 3 · 2015: 4 · 2014: 7 · 2013: 10 · 2012: 9
- FWCI
- 6.26
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- The Astrophysical Journal Letters (publishedVersion)
- INFM-OAR (INFN Catania) (submittedVersion, other-oa)
- Funders
- Ministerio de Economía y Competitividad
- Vetenskapsrådet
- Centre National de la Recherche Scientifique
- 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 › Astrophysics and Star Formation Studies
- Keywords
- fluorine abundance, asymptotic giant branch stars, carbon stars, nucleosynthesis, stellar mass, galactic chemical evolution
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