The first chemical enrichment in the universe and the formation of hyper metal-poor stars

Abstract

The recent discovery of a hyper metal-poor (HMP) star, whose metallicity Fe/H is smaller than 1/100,000 of the solar ratio, together with one earlier HMP star, has raised a challenging question if these HMP stars are the actual first generation, low mass stars in the Universe. We argue that these HMP stars are the second generation stars being formed from gases which were chemically enriched by the first generation supernovae. The key to this solution is the very unusual abundance patterns of these HMP stars with important similarities and differences. We can reproduce these abundance features with the core-collapse ``faint'' supernova models which undergo extensive matter mixing and fallback during the explosion.

To be published in Science. 12 pages, 3 figures

References in corpus (21)

• The Nucleosynthetic Signature of Population III
• The Formation of the First Star in the Universe
• First stars V - Abundance patterns from C to Zn and supernova yields in the early Galaxy
• Presupernova Evolution of Rotating Massive Stars I: Numerical Method and Evolution of the Internal Stellar Structure
• Nucleosynthetic signatures of the first stars
• The Extremely Metal-Poor, Neutron-Capture-Rich Star CS 22892-052: A Comprehensive Abundance Analysis
• Nucleosynthesis of Zinc and Iron-Peak Elements in Pop III Type II Supernovae : Comparison with abundances of Very Metal-Poor Halo Stars
• A stellar relic from the early Milky Way
• The extreme r-element rich, iron-poor halo giant CS31082-001: Implications for the r-process site(s) and radioactive cosmochronology
• First-generation black-hole-forming supernovae and the metal abundance pattern of a very iron-poor star
• Variations in the Abundance Pattern of Extremely Metal-poor Stars and Nucleosynthesis in Population III Supernovae
• Low-Mass Relics of Early Star Formation
• HE0107-5240, A Chemically Ancient Star.I. A Detailed Abundance Analysis
• Is HE0107-5240 A Primordial Star? -- The Characteristics of Extremely Metal-Poor Carbon-Rich Stars --
• The Peculiar Type II Supernova 1997 D: A Case for a Very Low 56Ni Mass
• Neutron Capture Elements in s-Process-Rich, Very Metal-Poor Stars
• Structure, Evolution and Nucleosynthesis of Primordial Stars
• Stellar Archaeology: a Keck Pilot Program on Extremely Metal- Poor Stars From the Hamburg/ESO Survey. III. The Lead (Pb) Star HE 0024-2523
• The Explosive Yields Produced by the First Generation of Core Collapse Supernovae and the Chemical Composition of Extremely Metal Poor Stars
• Evolution and Nucleosynthesis of Zero Metal Intermediate Mass Stars
• On the oxygen abundance of HE0107-5240

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• Stellar Yields of Rotating First Stars. I. Yields of Weak Supernovae and Abundances of Carbon-enhanced Hyper Metal Poor Stars
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• Chemical Enrichment in the Carbon-enhanced Damped Lyman $\alpha$ System
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• Probing the existence of very massive first stars
• Spectroscopic Studies of Extremely Metal-Poor Stars with the Subaru High Dispersion Spectrograph. IV. The alpha-Element-Enhanced Metal-Poor Star BS16934-002
• Injection of Short-Lived Radionuclides into the Early Solar System from a Faint Supernova with Mixing-Fallback
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• The Spatial Distribution of the Galactic First Stars I: High-Resolution N-body Approach
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