Prompt iron enrichment, two R-process components, and abundances in very metal-poor stars

G. J. Wasserburg, Y. Z. Qian

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73 Scopus citations

Abstract

We present a model to explain the wide range of abundances for heavy r-process elements (mass number A > 130) at low [Fe/H]. This model requires rapid star formation and/or an initial population of supermassive stars in the earliest condensed clots of matter in order to provide a prompt or initial Fe inventory. Subsequent Fe and r-process enrichment was provided by two types of supernovae: one producing heavy r-elements with no Fe on a rather short timescale and the other producing light r-elements (Λ ≤ 130) with Fe on a much longer timescale.

Original languageEnglish (US)
Pages (from-to)L21-L24
JournalAstrophysical Journal
Volume529
Issue number1 PART 2
DOIs
StatePublished - Jan 20 2000

Keywords

  • Galaxy: Evolution
  • Stars: Abundances
  • Stars: Population II

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