The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
A Subaru/High Dispersion Spectrograph Study of Lead (Pb) Abundances in Eight s‐Process Element–rich, Metal‐poor Stars
Open accessAbstract
We report the abundances of neutron-capture elements in eight carbon-rich, metal-poor (-2.7 ≤ [Fe/H] ≤ -1.9) stars observed with the Subaru Telescope High Dispersion Spectrograph. The derived abundance patterns indicate that the neutron-capture elements in these objects primarily originated from s -process nucleosynthesis, although the [Ba/Eu] abundance ratios in some objects are lower than that of the solar system s -process component. The present analysis has yielded the Pb abundances for seven objects as well as an upper limit for one object from use of the Pb I λ4057 and λ3683 lines. The values of [Pb/Ba] in these objects cover a wide range, between -0.3 and 1.2. Theoretical studies of s -process nucleosynthesis at low metallicity are required to explain this large dispersion of the [Pb/Ba] values. Variations in radial velocity have been found for two of the eight objects, suggesting that, at least in these instances, the observed excess of s -process elements is due to the transfer of material across a binary system including an AGB star. Comparisons with predictions of AGB nucleosynthesis models are discussed.
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Citations
Cites
The Origin of Extremely Metal-poor Carbon Stars and the Search for Population III
Fujimoto, M. Y., Ikeda, Y., & Iben, Jr. (2000) · The Astrophysical Journal · doi:10.1086/312453 · Cited by 189
Discovery of three lead-rich stars
Van Eck, S., Goriely, S., Jorissen, A., & Plez, B. (2001) · Nature · doi:10.1038/35090514 · Cited by 129
Cited by
The Discovery and Analysis of Very Metal-Poor Stars in the Galaxy
Beers, T. C., & Christlieb, N. (2005) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.42.053102.134057 · Cited by 1,223
Self-citationNeutron-Capture Elements in the Early Galaxy
Sneden, C., Cowan, J. J., & Gallino, R. (2008) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.46.060407.145207 · Cited by 968
Abundance Variations within Globular Clusters
Gratton, R., Sneden, C., & Carretta, E. (2004) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.42.053102.133945 · Cited by 885
Carbon‐enhanced Metal‐poor Stars. I. Chemical Compositions of 26 Stars
Aoki, W., Beers, T. C., Christlieb, N., Norris, J. E., Ryan, S. G., & Tsangarides, S. (2007) · The Astrophysical Journal · doi:10.1086/509817 · Cited by 496
Self-citationIwamoto, N., Kajino, T., Mathews, G. J., Fujimoto, M. Y., & Aoki, W. (2004) · The Astrophysical Journal · doi:10.1086/380989 · Cited by 88
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Metadata
- Authors
- Aoki, W., Ryan, S. G., Norris, J. E., Beers, T. C., Ando, H., & Tsangarides, S.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2002-12
- Volume
- 580
- Issue
- 2
- Pages
- 1149-1158
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2168773231
- Cited by
- 203
- References
- 2
- FWCI
- 9.52
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Aoki, W., Ryan, S. G., Norris, J. E., Beers, T. C., Ando, H., & Tsangarides, S. (2002). A Subaru/High Dispersion Spectrograph Study of Lead (Pb) Abundances in Eight s‐Process Element–rich, Metal‐poor Stars. The Astrophysical Journal. https://doi.org/10.1086/343885
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