Neutron captures produce the vast majority of abundances of elements heavier than iron in
the Universe. Beyond the classical slow (s) and rapid (r) processes, there is observational …

“The Answer to the Great Question... Of Life, the Universe and Everything... Is... Forty-two,”
said Deep Thought, with infinite majesty and calm…“I checked it very thoroughly,” said the …

We present new theoretical stellar yields and surface abundances for three grids of metal-
rich asymptotic giant branch (AGB) models. Post-processing nucleosynthesis results are …

Plots such as ε54Cr vs. ε50Ti and ε54Cr vs. Δ17O reveal a fundamental dichotomy among
planetary materials. The “carbonaceous” chondrites, by virtue of high ε50Ti and high ε62Ni …

Nucleosynthetic isotope anomalies are powerful tracers to determine the provenance of
meteorites and their components, and to identify genetic links between these materials. Here …

Isotopic variations usually follow mass-dependent fractionation, meaning that the relative
variations in isotopic ratios scale with the difference in mass of the isotopes involved (eg …

Understanding the nature and origin of the precursor material to terrestrial planets is key to
deciphering the mechanisms and timescales of planet formation. Nucleosynthetic variability …

Short-lived radionuclides can be used as high-resolution chronometers for establishing
timescales of planetary formation provided that they were homogeneously distributed in the …

The early evolution of the solar nebula involved substantial transport of mass, resulting in
mixing and homogenization of isotopically diverse materials that were contributed to the …

We have reinvestigated the Mn–Cr systematics in a number of primitive meteorites,
differentiated planetesimals and terrestrial planets in order to address the chronology of the …