Results 141 to 150 of about 158,293 (319)
Hubble Space TelescopeObservations of Neutron‐Capture Elements in Very Metal Poor Stars [PDF]
, 1998 C. Sneden +3 more
openalex +1 more source
, 2012 Previous studies of the interior structure of transiting exoplanets have shown that the heavy element content of gas giants increases with host star metallicity. Since metal-poor planets are less dense and have larger radii than metal-rich planets of the
Dodson-Robinson, Sarah
core +1 more source
Thermokinetic Modeling Approach for Aluminide Diffusion Coatings on Molybdenum Substrates
Advanced Engineering Materials, EarlyView.The advancement of innovative materials for protective coatings in high‐temperature environments relies on a detailed understanding of diffusion processes within these systems. This article presents findings from modeling approaches, supporting the development and optimization of coating materials by focusing on the prediction of diffusion‐driven ...
Jurica Filipovic +4 more
wiley +1 more source
Oxygen Abundances in Metal Poor Subgiant Stars from the O I Triplet [PDF]
, 1997 R. M. Cavallo +2 more
openalex +1 more source
Near-Field Cosmology with Metal-Poor Stars
, 2015 The oldest, most metal-poor stars in the Galactic halo and satellite dwarf galaxies present an opportunity to explore the chemical and physical conditions of the earliest star forming environments in the Universe.
Frebel, Anna, Norris, John E.
core +1 more source
Advanced Engineering Materials, EarlyView.The influence of oxide nanoparticle synthesis route and concentration on microstructure and high‐temperature performance of additively manufactured oxide dispersion‐strengthened steels is investigated. Comparing laser‐generated and chemically synthesized ZrO2 nanoparticles, the study reveals how dispersion quality, crystal structure and particle size ...
Mareen Goßling +12 more
wiley +1 more source
A Spectroscopic Survey of Metal-poor OB Stars in Local Dwarf Galaxy NGC 3109
The Astrophysical JournalAs JWST uncovers increasingly strong evidence that metal-poor, massive stars in early galaxies dominated reionization, observational constraints on the properties of such stars are more relevant than ever before.
Abby Mintz +5 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Additive manufacturing technologies like laser powder‐bed fusion offer great design freedom and individualization of products down to a batch size of one. However, parts fabricated with this technology suffer from poor quality. Acoustic assistance during the build process can minimize these drawbacks.
Oliver Maurer, Dirk Bähre
wiley +1 more source
The Astrophysical Journal LettersUsing numerical simulations of a barred disk galaxy embedded in nonspinning and spinning dark matter (DM) halos, we present a novel mechanism of “cooling” the vertical oscillations of DM particles, which acquire disk kinematics.
Xingchen Li +3 more
doaj +1 more source