The metal-poor end of the Spite plateau. II. Detailed chemical investigation

Abstract

Context. The study of old, metal-poor stars deepens our knowledge on the early stages of the universe. In particular, the study of these stars gives us a valuable insight into the masses of the first massive stars and their emission of ionising photons. Aims. We present a detailed chemical analysis and determination of the kinematic and orbital properties of a sample of 11 dwarf stars. These are metal-poor stars, and a few of them present a low lithium content. We inspected whether the other elements also present anomalies. Methods. We analysed the high-resolution UVES spectra of a few metal-poor stars using the Turbospectrum code to synthesise spectral lines profiles. This allowed us to derive a detailed chemical analysis of Fe,

References in corpus (32)

• The Gaia mission
• The mass distribution and gravitational potential of the Milky Way
• Galactic chemical evolution: Carbon through Zinc
• A Search for Stars of Very Low Metal Abundance. VI. Detailed Abundances of 313 Metal-Poor Stars
• First Stars VIII -- Enrichment of the neutron-capture elements in the early Galaxy
• CH in stellar atmospheres: an extensive linelist
• First stars VII. Lithium in extremely metal poor dwarfs
• NLTE abundances of Mn in a sample of metal-poor stars
• The Frequency of Carbon-Enhanced Metal-Poor Stars in the Galaxy from the HERES sample
• TOPoS: II. On the bimodality of carbon abundance in CEMP stars. Implications on the early chemical evolution of galaxies
• First stars IX -Mixing in extremely metal-poor giants. Variation of the 12C/13C, [Na/Mg] and [Al/Mg] ratios
• NLTE determination of the sodium abundance in a homogeneous sample of extremely metal-poor stars
• NLTE determination of the aluminium abundance in a homogeneous sample of extremely metal-poor stars
• Astronuclear Physics: a Tale of the Atomic Nuclei in the Skies
• Elemental abundances and classification of CEMP stars
• 3D NLTE spectral line formation of lithium in late-type stars
• VINTERGATAN II: the history of the Milky Way told by its mergers
• Lithium abundances in CEMP stars
• A massive mess: When a large dwarf and a Milky Way-like galaxy merge
• Bimodality of [α/Fe]-[Fe/H] distributions is a natural outcome of dissipative collapse and disc growth in Milky Way-type galaxies
• A New Type of Extremely Metal Poor Star
• Probing the existence of very massive first stars
• Constraining cosmic scatter in the Galactic halo through a differential analysis of metal-poor stars
• MARCS model atmospheres
• Back to the Lithium Plateau with J0023+0307 with [Fe/H]<-6
• The tale of the tail -- disentangling the high transverse velocity stars in Gaia DR2
• High-resolution spectroscopy of extremely metal-poor stars from SDSS/SEGUE. III. Unevolved Stars with $[Fe/H]\lesssim -3.5$
• Lithium and Beryllium in the Gaia-Enceladus Galaxy
• The low Sr/Ba ratio on some extremely metal-poor stars
• The R-Process Alliance: Discovery of a low-alpha, r-Process-Enhanced Metal-Poor Star in the Galactic Halo
• The GALAH Survey: Accreted stars also inhabit the Spite Plateau
• Improving spectroscopic lithium abundances. Fitting functions for 3D non-LTE corrections in FGK stars of different metallicity

Cited by in corpus (8)

• The R-Process Alliance: Fifth Data Release from the Search for R-Process-Enhanced Metal-poor Stars in the Galactic Halo with the GTC
• A Critique of the Spite Plateau, and the Astration of Primordial Lithium
• Search for Extremely Metal-Poor Stars with GEMINI-N/GRACES I. Chemical-Abundance Analysis
• Li distribution, kinematics and detailed abundance analysis among very metal-poor stars in the Galactic halo from the HESP-GOMPA survey
• Extragalactic 85Rb/87Rb and 6Li/7Li ratios in the Small Magellanic Cloud
• A chemodynamical analysis of bright metal-poor stars from the HESP-GOMPA survey -- Indications of a non-prevailing site for light r-process elements
• MINCE III. Detailed chemical analysis of the UVES sample
• Primordial helium-3 redux: The helium isotope ratio of the Orion nebula