On the origin of HE0107-5240, the most iron deficient star presently known

Abstract

We show that the "puzzling" chemical composition observed in the extremely metal poor star HE0107-5240 may be naturally explained by the concurrent pollution of at least two supernovae. In the simplest possible model a supernova of quite low mass (~15 Msun), underwent a "normal" explosion and ejected ~0.06 Msun of 56Ni while a second one was massive enough (~35 Msun) to experience a strong fall back that locked in a compact remnant all the carbon-oxygen core. In a more general scenario, the pristine gas clouds were polluted by one or more supernovae of relatively low mass (less than ~25 Msun). The successive explosion of a quite massive star experiencing an extended fall back would have largely raised the abundances of the light elements in its close neighborhood.

10 pages; 3 figures; accepted for publication in the The Astrophysical Journal Letters

References in corpus (1)

• How did the metals in a giant star originate?

Cited by in corpus (68)

• Galactic chemical evolution: Carbon through Zinc
• Nucleosynthesis Yields of Core-Collapse Supernovae and Hypernovae, and Galactic Chemical Evolution
• Nucleosynthesis and Evolution of Massive Metal-Free Stars
• Nucleosynthetic signatures of the first stars
• Near-Field Cosmology with Metal-Poor Stars
• The early star generations: the dominant effect of rotation on the CNO yields
• The Most Metal-Poor Stars. II. Chemical Abundances of 190 Metal-Poor Stars Including 10 New Stars With [Fe/H] < -3.5
• Variations in the Abundance Pattern of Extremely Metal-poor Stars and Nucleosynthesis in Population III Supernovae
• Very low metallicity massive star models: Pre-SN evolution and primary nitrogen production
• HE 0557-4840 - Ultra-Metal-Poor and Carbon-Rich
• The Most Metal-Poor Stars. IV. The Two Populations With [Fe/H] < -3.0
• HE1327-2326, an unevolved star with [Fe/H]<-5.0. I. A Comprehensive Abundance Analysis
• Is HE0107-5240 A Primordial Star? -- The Characteristics of Extremely Metal-Poor Carbon-Rich Stars --
• TOPoS: II. On the bimodality of carbon abundance in CEMP stars. Implications on the early chemical evolution of galaxies
• Binarity in Carbon-Enhanced Metal-Poor stars
• Pre-galactic metal enrichment - The chemical signatures of the first stars
• Evolution and Nucleosynthesis of Extremely Metal Poor & Metal-Free Low- and Intermediate-Mass Stars I: Stellar Yield Tables and the CEMPs
• Stellar Archaeology -- Exploring the Universe with Metal-Poor Stars
• The Initial mass function of the first stars inferred from extremely metal-poor stars
• A comparison of evolutionary tracks for single Galactic massive stars
• Are C-rich ultra iron poor stars also He-rich?
• Nucleosynthesis, Reionization, and the Mass Function of the First Stars
• Presupernova evolution and explosive nucleosynthesis of zero metal massive stars
• Li in NGC 6752 and the formation of globular clusters
• The chemical compositions of the extreme halo stars HE0107-5240 and HE1327-2326 inferred from 3D hydrodynamical model atmospheres
• Non standard s-process in massive rotating stars. Yields of $10-150$ $M_{\odot }$ models at $Z=10^{-3}$
• SD 1313-0019 -- Another second-generation star with [Fe/H] = -5.0, observed with the Magellan Telescope
• The first stars: CEMP--no stars and signatures of spinstars
• Faint Population III supernovae as the origin of the most iron-poor stars
• Binarity among CEMP-no stars: an indication of multiple formation pathways?
• On the oxygen abundance of HE0107-5240
• The formation of the extremely primitive star SDSS J102915+172927 relies on dust
• Stellar Yields of Rotating First Stars. I. Yields of Weak Supernovae and Abundances of Carbon-enhanced Hyper Metal Poor Stars
• Carbon-Enhanced Hyper-metal-poor Stars and the Stellar IMF at Low Metallicity
• The metal and dust yields of the first massive stars
• Grids of stellar models with rotation: V. Models from 1.7 to 120 Msun at zero metallicity
• Supernova dust yields: the role of metallicity, rotation, and fallback
• Convective H-He Interactions in Massive Population III Stellar Evolution Models
• Models for extremely metal-poor halo stars
• The evolution of CNO elements in galaxies
• Detection of a population of carbon-enhanced metal-poor stars in the Sculptor dwarf spheroidal galaxy
• Evolution and nucleosynthesis of primordial low mass stars
• Fingerprint of the first stars: multi-enriched extremely metal-poor stars in the TOPoS survey
• Formation History of Metal-Poor Halo Stars with Hierarchical Model and the Effect of ISM accretion on the Most Metal-Poor Stars
• Constraints on CEMP-no progenitors from nuclear astrophysics
• J0815+4729: A chemically primitive dwarf star in the Galactic Halo observed with Gran Telescopio Canarias
• The Metallicity of Pre-Galactic Globular Clusters: Observational consequences of the first stars
• The p-process in exploding rotating massive stars
• Trans-iron Ge, As, Se, and heavier elements in the dwarf metal-poor stars, HD~19445, HD~84937, HD~94028, HD~140283, and HD~160617
• Searching for Dust around Hyper Metal-Poor Stars
• SIMBA-C: An updated chemical enrichment model for galactic chemical evolution in the SIMBA simulation
• Pre-supernova mixing in CEMP-no source stars
• Oxygen and light element synthesis by neutron-capture reactions in metal-free and extremely metal-poor AGB stars
• On the 12C/13C isotopic ratio at the dawn of chemical evolution
• Fates of the oldest intermediate-mass stars - Primordial to Extremely Metal-Poor AGB and Super-AGB Stars: White Dwarf or Supernova progenitors
• An upper limit on the sulphur abundance in HE 1327-2326
• Inferring the velocity of early massive stars from the abundances of extremely metal-poor stars
• Espresso observations of HE 0107$-$5240 and other CEMP-no stars with $[Fe/H]\le -4.5$
• A strong neutron burst in jet-like supernovae of spinstars
• Nucleosynthesis from massive stars 50 years after B2FH
• Multicolor light curves simulations of Population III core-collapse supernovae: from shock breakout to ${}^{56}$Co decay
• Stellar Evolution in the Early Universe
• Stellar Evolution at Low Metallicity
• A new model for the origin of very metal poor stars and their chemical composition
• M3DIS -- A grid of 3D radiation-hydrodynamics stellar atmosphere models for stellar surveys. II. Carbon-enhanced metal-poor stars
• Unveiling the nature of HE 0107-5240
• Exploring the Universe with Metal-Poor Stars
• The origin of HE0107-5240 and the production of O and Na in extremely metal-poor stars