The Light Elements as Chronometers 3 SNII Ejecta Galactic Halo Shock Acceleration Shell Star Formation GCRs GCRs Accelerated
نویسندگان
چکیده
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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تاریخ انتشار 2000