The Lithium Content of the Galactic Halo Stars

  title={The Lithium Content of the Galactic Halo Stars},
  author={C.Charbonnel and F.Primas},
. Thanks to the accurate determ ination of the baryon density of the universe by the recent cosm ic m icrowave background experim ents,updated predictionsofthe standard m odelofBig Bang nucleosynthesisnow yield the initialabundance of the prim ordiallight elem ents with unprecedented precision.In the case of 7 Li, the CM B+ SBBN value is signi(cid:12)cantly higherthan the generally reported abundancesfor Pop IIstars along the so-called Spite plateau.In view ofthe crucialim portance ofthis… 


We report the discovery of eight lithium-rich field giants found in a high-resolution spectroscopic sample of over 700 metal-poor stars ([Fe/H] < -0.5) selected from the Radial Velocity Experiment

Theoretical Predictions of Surface Light Element Abundances in Protostellar and Pre-Main Sequence Phase

Theoretical prediction of surface stellar abundances of light elements–lithium, beryllium, and boron–represents one of the most interesting open problems in astrophysics. As well known, several

High-resolution Optical Spectroscopy of Stars in the Sylgr Stellar Stream

We observe two metal-poor main-sequence stars that are members of the recently discovered Sylgr stellar stream. We present radial velocities, stellar parameters, and abundances for 13 elements

Fuzzy Cluster Analysis: Application to Determining Metallicities for Very Metal-poor Stars

This work presents a first attempt to apply fuzzy cluster analysis (FCA) to analyzing stellar spectra. FCA is adopted to categorize line indices measured from LAMOST low-resolution spectra, and

First star survivors as metal-rich halo stars that experienced supernova explosions in binary systems

The search for the first stars formed from metal-free gas in the universe is one of the key issues in astronomy because it relates to many fields, such as the formation of stars and galaxies, the

Protostellar accretion in low mass metal poor stars and the cosmological lithium problem

Context. The cosmological lithium problem, that is, the discrepancy between the lithium abundance predicted by the Big Bang nucleosynthesis and the one observed for the stars of the “Spite plateau”,

Elastic scattering, inelastic excitation, and 1n pick-up transfer cross sections for B10 + Sn120 at energies near the Coulomb barrier

The $^{10}$B+$^{120}$Sn reaction has been systematically studied at laboratory energies around the Coulomb barrier: E$_{\rm LAB}=$31.5, 33.5, 35.0, and 37.5 MeV. Cross sections for the elastic

Exploring the production and depletion of lithium in the Milky Way stellar disk

Despite the recent availability of large samples of stars with high-precision Li abundances, there are many unanswered questions about the evolution of this unique element in the Galaxy and in the

Overview of the lithium problem in metal-poor stars and new results on 6Li

Two problems are discussed here. The first one is the 0.4 dex discrepancy between the 7Li abundance derived from the spectra of metal-poor halo stars on the one hand, and from Big Bang



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