Timothy C. Beers, Takeru K. Suzuki, Yuzuru Yoshii
Published 2000-02-02Version 1
Recent detailed simulations of Galactic Chemical Evolution have shown that the heavy elements, in particular [Fe/H], are expected to exhibit a weak, or absent, correlation with stellar ages in the early Galaxy due to the lack of efficient mixing of interstellar material enriched by individual Type II supernovae. A promising alternative "chronometer" of stellar ages is suggested, based on the expectation that the light elements Be and B are formed primarily as spallation products of Galactic Cosmic Rays.
Comments: 7 pages, 2 figures, To appear in "The Light Elements and Their Evolution," IAU Symposium 198, ASP Conference Series, eds. L. da Silva, M. Spite, & J.R. de Medeiros (ASP, San Francisco)
Boron in the Extreme Pop II Star HD 140283 and the Production of Light Elements in the Early Galaxy
Lithium-Beryllium-Boron and Oxygen in the early Galaxy
Nucleosynthesis Without a Computer
