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Cited by 96Stellar, planetary, and galactic studiesNuclear physics research studiesGamma-ray bursts and supernovae

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Rubidium, zirconium, and lithium production in intermediate-mass asymptotic giant branch stars

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van Raai, M. A., Lugaro, M., Karakas, A. I., García-Hernández, D. A., Yong, D.·2012·Astronomy & Astrophysics
DOI 10.1051/0004-6361/201117896
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Abstract

Context. A recent survey of a large sample of Galactic intermediate-mass (>3 M⊙) asymptotic giant branch (AGB) stars shows that they exhibit large overabundances of rubidium (Rb) up to 100–1000 times solar. In contrast, zirconium (Zr) is not enriched in these stars compared to its solar abundances. These observations set constraints on our theoretical notion of the slow neutron capture process (s process) that occurs inside intermediate-mass AGB stars. Lithium (Li) abundances are also reported for these stars. In intermediate-mass AGB stars, Li can be produced by proton captures occuring at the base of the convective envelope. For this reason the observations of Rb, Zr, and Li set complementary constraints on different processes occurring in the same stars.

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  • Stellar evolution models are able to account for the magnitude of the Li-enrichment observed in intermediate-mass AGB stars.

    “Stellar evolution models are able to account for the magnitude of the Li-enrichment observed in intermediate-mass AGB stars, even though there are considerable modelling uncertainties (van Raai et al. 2012; Garc´ ıa-Hern´ andez et al. 2013).”

    From The Dawes Review 2: Nucleosynthesis and Stellar Yields of Low- and Intermediate-Mass Single Stars (2014) · cites this paper as van Raai et al. 2012

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Metadata

Authors
van Raai, M. A., Lugaro, M., Karakas, A. I., García-Hernández, D. A., & Yong, D.
Affiliations
  • Utrecht University (NL)
  • Monash University (AU)
  • Mount Stromlo Observatory (AU)
  • Universidad de La Laguna (ES)
ORCID
Venue
Astronomy & Astrophysics
Publisher
EDP Sciences
Published
2012-03-22
Volume
540
Pages
A44
ISSN
  • 0004-6361 (ISSN-L)
  • 1432-0746
DOI
10.1051/0004-6361/201117896
OpenAlex
W2148597012
Cited by
96
References
1
Citations by year
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FWCI
5.25
Type
journal article
Language
en
Open access
Locations
  • Astronomy and Astrophysics (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • Springer Link (Chiba Institute of Technology) (submittedVersion)
  • ANU Open Research (Australian National University) (submittedVersion)
  • arXiv (Cornell University)
Funders
Ministerio de Ciencia e Innovación
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Nuclear physics research studies
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Gamma-ray bursts and supernovae
Keywords
rubidium, zirconium, lithium, s-process nucleosynthesis, slow neutron capture, proton capture, convective envelope, stellar nucleosynthesis, chemical abundances

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