Results 21 to 30 of about 167,710 (319)
Binarity in carbon-enhanced metal-poor stars★ [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 13 pages, 7 figures, accepted for publication in ...
Starkenburg, Else +3 more
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Experimental Astronomy, 2022 In this contribution I provide an overview of the study of metal poor stars, with an emphasis on the efforts that are on-going to find large number of these rare objects. These efforts will provide, in the next few years, an interesting number of targets for which it will be desirable to have a chemical inventory, as complete as possible.
openaire +3 more sources
Search for Extremely Metal-poor Stars with Gemini-N/Graces. I. Chemical-abundance Analysis
The Astrophysical Journal, 2023 We present stellar parameters and abundances of 13 elements for 18 very metal-poor (VMP; [Fe/H] < –2.0) stars, selected as extremely metal-poor (EMP; [Fe/H] < –3.0) candidates from the Sloan Digital Sky Survey and Large sky Area Multi-Object Fiber ...
Miji Jeong +7 more
doaj +1 more source
Chemistry of the Most Metal-poor Stars in the Bulge and the z > 10 Universe [PDF]
, 2014 Metal-poor stars in the Milky Way are local relics of the epoch of the first stars and the first galaxies. However, a low metallicity does not prove that a star formed in this ancient era, as metal-poor stars form over a range of redshift in different ...
Casey, Andrew R., Schlaufman, Kevin C.
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Detailed Abundances of Two Very Metal-Poor Stars in Dwarf Galaxies [PDF]
, 2012 The most metal-poor stars in dwarf spheroidal galaxies (dSphs) can show the nucleosynthetic patterns of one or a few supernovae (SNe). These SNe could have zero metallicity, making metal-poor dSph stars the closest surviving links to Population III stars.
Cohen, Judith G., Kirby, Evan N.
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The COMBS survey I : Chemical Origins of Metal-Poor Stars in the Galactic Bulge [PDF]
, 2019 19 pages, 5 tables, accepted to MNRASChemistry and kinematic studies can determine the origins of stellar population across the Milky Way. The metallicity distribution function of the bulge indicates that it comprises multiple populations, the more metal-
Asplund, Martin +9 more
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Metal-rich stars are less suitable for the evolution of life on their planets
Nature Communications, 2023 Atmospheric ozone and oxygen protect the terrestrial biosphere against harmful ultraviolet (UV) radiation. Here, we model atmospheres of Earth-like planets hosted by stars with near-solar effective temperatures (5300 to 6300 K) and a broad range of ...
Anna V. Shapiro +9 more
doaj +1 more source
Abundances In Very Metal‐Poor Dwarf Stars [PDF]
The Astrophysical Journal, 2004 Accepted for publication in the ...
Cohen, Judith G. +9 more
openaire +3 more sources
NLTE Analysis of Y i and Y ii in the Atmospheres of FGK Stars
The Astrophysical Journal, 2023 The nonlocal thermodynamical equilibrium (NLTE) line formation of Y i and Y ii is considered in 1D LTE model atmospheres of FGK-type stars. The model atom was constructed with the most up-to-date atomic data, including quantum cross sections and rate ...
Sofya Alexeeva +7 more
doaj +1 more source
Finding the First Stars: The Hamburg/ESO Objective Prism Survey [PDF]
, 1999 We report on a search for extremely metal-poor ([Fe/H]
Beers, T. C. +5 more
core +3 more sources