Heavy element synthesis in the oldest stars and the early Universe

John J. Cowan () and Christopher Sneden ()
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John J. Cowan: University of Oklahoma
Christopher Sneden: University of Texas

Nature, 2006, vol. 440, issue 7088, 1151-1156

Abstract: Abstract The first stars in the Universe were probably quite different from those born today. Composed almost entirely of hydrogen and helium (plus a tiny trace of lithium), they lacked the heavier elements that determine the formation and evolution of younger stars. Although we cannot observe the very first stars — they died long ago in supernovae explosions — they created heavy elements that were incorporated into the next generation. Here we describe how observations of heavy elements in the oldest surviving stars in our Galaxy's halo help us understand the nature of the first stars — those responsible for the chemical enrichment of our Galaxy and Universe.

Date: 2006
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DOI: 10.1038/nature04807

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