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Cited by 145Stellar, planetary, and galactic studiesNuclear physics research studiesGamma-ray bursts and supernovae

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Rubidium-Rich Asymptotic Giant Branch Stars

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García-Hernández, D. A., García-Lario, P., Plez, B., D'Antona, F., Manchado, A., Trigo-Rodríguez, J. M.·2006·Science
DOI 10.1126/science.1133706
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Abstract

A long-debated issue concerning the nucleosynthesis of neutron-rich elements in asymptotic giant branch (AGB) stars is the identification of the neutron source. We report intermediate-mass (4 to 8 solar masses) AGB stars in our Galaxy that are rubidium-rich as a result of overproduction of the long-lived radioactive isotope 87 Rb, as predicted theoretically 40 years ago. This finding represents direct observational evidence that the 22 Ne(α,n) 25 Mg reaction must be the dominant neutron source in these stars. These stars challenge our understanding of the late stages of the evolution of intermediate-mass stars and would have promoted a highly variable Rb/Sr environment in the early solar nebula.

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Crossref · 10.1126/science.1133706

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  • The 22Ne(α,n)25Mg reaction is the dominant neutron source in intermediate-mass AGB stars.

    “It is the dominant neutron-producing reaction in the He and C-burning regions of massive stars (The, El Eid, & Meyer 2007; Heil et al. 2008; Pignatari et al. 2010) and the dominant neutron source in intermediate-mass AGB stars (Garc´ ıaHern´ andez et al. 2006; Karakas et al. 2012).”

    From The Dawes Review 2: Nucleosynthesis and Stellar Yields of Low- and Intermediate-Mass Single Stars (2014) · cites this paper as García-Hernández et al. 2006

  • Observational evidence suggests that intermediate-mass AGB stars produce substantial amounts of Rb.

    “However, observational evidence suggests that intermediate-mass AGB stars produce substantial amounts of Rb (Garc´ ıa-Hern´ andez et al. 2006).”

    From The Dawes Review 2: Nucleosynthesis and Stellar Yields of Low- and Intermediate-Mass Single Stars (2014) · cites this paper as García-Hernández et al. 2006

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Research works printed but not linked: 26

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Metadata

Authors
García-Hernández, D. A., García-Lario, P., Plez, B., D'Antona, F., Manchado, A., & Trigo-Rodríguez, J. M.
Affiliations
  • ISO Data Centre, European Space Astronomy Centre, Research and Scientific Support Department, European Space Agency, Villafranca del Castillo, Apdo. 50727, E-28080 Madrid, Spain.
  • Consejo Superior de Investigaciones Científicas (ES)
ORCID
Venue
Science
Publisher
American Association for the Advancement of Science (AAAS)
Published
2006-12-15
Volume
314
Issue
5806
Pages
1751-1754
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
DOI
10.1126/science.1133706
OpenAlex
W2137944162
Cited by
145
References
0
Citations by year
2026: 2 · 2025: 4 · 2024: 3 · 2023: 3 · 2022: 3 · 2021: 8 · 2020: 11 · 2019: 12 · 2018: 8 · 2017: 7 · 2016: 18 · 2015: 9 · 2014: 9 · 2013: 6 · 2012: 8
FWCI
3.64
Type
journal article
Language
en
Open access
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • HAL (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 › Nuclear and High Energy Physics › Nuclear physics research studies
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Gamma-ray bursts and supernovae
Keywords
asymptotic giant branch stars, intermediate-mass stars, neutron source, 22Ne(α,n)25Mg reaction, stellar nucleosynthesis, Rb/Sr ratio, early solar nebula, stellar evolution

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