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The Extremely Metal-poor, Neutron Capture-rich Star CS 22892-052: A Comprehensive Abundance Analysis
High-resolution spectra obtained with three ground-based facilities and the Hubble Space Telescope (HST) have been combined to produce a new abundance analysis of CS 22892-052, an extremely…
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The Chemical Composition and Age of the Metal-poor Halo Star BD +17°3248
We have combined new high-resolution spectra obtained with the Hubble Space Telescope (HST) and ground-based facilities to make a comprehensive new abundance analysis of the metal-poor, halo star BD…
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r-Process Abundances and Chronometers in Metal-poor Stars
Rapid neutron-capture (i.e., r-process) nucleosynthesis calculations, employing internally consistent and physically realistic nuclear physics input (quasi-particle random-phase approximation [QRPA]…
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The NUBASE2016 evaluation of nuclear properties
This paper presents the NUBASE2016 evaluation that contains the recommended values for nuclear and decay properties of 3437 nuclides in their ground and excited isomeric (T1/2 ⩾ 100 ns) states. All…
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Thorium and Uranium Chronometers Applied to CS 31082-001
We use the classical r-process model to explore the implications of the recently reported first observation of U in the extremely metal-poor, r-process element-enriched halo star CS 31082-001 for U…
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rp-process nucleosynthesis at extreme temperature and density conditions
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Explorations of the r-Processes: Comparisons between Calculations and Observations of Low-Metallicity Stars
Abundances of heavier elements (barium and beyond) in many neutron-capture-element-rich halo stars accurately replicate the solar system r-process pattern. However, abundances of lighter…
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New calculations of grossβ-decay properties for astrophysical applications: Speeding-up the classicalrprocess
Recent compilations of experimental gross �-decay properties, i.e. half-lives (T1/2) and neutron- emission probabilities (Pn), are compared to improved global macroscopic-microscopic model pre-…
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The Astrophysical r-Process: A Comparison of Calculations following Adiabatic Expansion with Classical Calculations Based on Neutron Densities and Temperatures
The rapid neutron-capture process (r-process) encounters unstable nuclei far from β-stability. Therefore its observable features, like the abundances, witness (still uncertain) nuclear structure as…
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The Hamburg/ESO R-process Enhanced Star survey (HERES). I. Project description, and discovery of two stars with strong enhancements of neutron-capture elements
We report on a dedicated effort to identify and study metal-poor stars strongly enhanced in r-process elements ((r/Fe) > 1 dex; hereafter r-II stars), the Hamburg/ESO R-process Enhanced Star survey…
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