The Light Elements Be and B as Stellar Chronometers in the Early Galaxy

Details The Light Elements Be and B as Stellar Chronometers in the Early Galaxy The Light Elements Be and B as Stellar Chronometers in the Early Galaxy

2000-02-02

arxiv.org/abs/astro-ph/0002056v1

Astronomy and Astrophysics

Astrophysics

7 pages, 2 figures, To appear in "The Light Elements and Their Evolution," IAU Symposium 198, ASP Conference Series, eds. L. d

Scientific paper

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.

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