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Prompt Iron Enrichment, Two r-Process Components, and Abundances in Very Metal-Poor Stars

Wasserburg, G. J. and Qian, Y. -Z. (2000) Prompt Iron Enrichment, Two r-Process Components, and Abundances in Very Metal-Poor Stars. Astrophysical Journal Letters, 529 (1). L21-L24. ISSN 2041-8205. http://resolver.caltech.edu/CaltechAUTHORS:20131119-095517692

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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 (A ≤ 130) with Fe on a much longer timescale.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1086/312455DOIArticle
http://iopscience.iop.org/1538-4357/529/1/L21PublisherArticle
http://arxiv.org/abs/astro-ph/9911526arXivDiscussion Paper
Additional Information:© 2000 American Astronomical Society. Received 1999 October 19; accepted 1999 November 29; published 1999 December 17. We thank Roger Blandford, Wallace Sargent, Charles Steidel, and Stan Woosley for helpful discussions and Roberto Gallino for seeking to keep us on the rich road of Ba and proper mixing. Comments by Al Cameron and John Cowan were very valuable. This work was supported in part by the Department of Energy under grants DE-FG03-88ER-13851 and DE-FG02- 87ER40328 and by NASA under grant NAG5-4076, Caltech Division Contribution 8647(1039).
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG03-88ER-13851
Department of Energy (DOE)DE-FG02-87ER40328
NASANAG5-4076
Subject Keywords:Galaxy: evolution; stars: abundances; stars: Population II
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Caltech Division of Geological and Planetary Sciences8647
Lunatic Asylum Lab1039
Record Number:CaltechAUTHORS:20131119-095517692
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20131119-095517692
Official Citation:Prompt Iron Enrichment, Two r-Process Components, and Abundances in Very Metal-Poor Stars G. J. Wasserburg and Y.-Z. Qian 2000 ApJ 529 L21
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:42559
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:20 Nov 2013 20:57
Last Modified:29 Aug 2014 14:47

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