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

G. J. Wasserburg; Y. Z. Qian

doi:10.1086/312455

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

G. J. Wasserburg, Y. Z. Qian

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

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 language	English (US)
Pages (from-to)	L21-L24
Journal	Astrophysical Journal
Volume	529
Issue number	1 PART 2
DOIs	https://doi.org/10.1086/312455
State	Published - Jan 20 2000

Keywords

Galaxy: Evolution
Stars: Abundances
Stars: Population II

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AU - Qian, Y. Z.

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N2 - 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.

AB - 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.

KW - Galaxy: Evolution

KW - Stars: Abundances

KW - Stars: Population II

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