Abstract
CURRENT theories of element synthesis1 suggest that different groups of elements present in the solar system and in normal stars result from different kinds of nuclear reactions in various stars of bygone generations followed by ejection of the products into the interstellar medium. Consequently, one may expect very old stars of the galactic halo to differ from the Sun in the relative proportions of heavy elements ascribed to different nucleogenesis processes, as well as in the overall ratio of heavy elements to hydrogen.
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PAGEL, B. Abundance of Heavy Metals in the Halo Red Giant Star HD 122563. Nature 206, 282–283 (1965). https://doi.org/10.1038/206282a0
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DOI: https://doi.org/10.1038/206282a0
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