Results 51 to 60 of about 694,028 (301)
The Astrophysical JournalWe present lithium abundances for 119 main-sequence stars in the old open cluster NGC 188 (age = 6.3 Gyr), using high-resolution, high signal-to-noise ratio spectra from WIYN/Hydra.
Qinghui Sun +3 more
doaj +1 more source
Li I LINE λ 460.3 nm IN SPECTRA OF SUPER LITHIUM-RICH CARBON STARS
Odessa Astronomical Publications, 2017 Subordinate Li I line λ 460.3 nm is quite strong and sensitive on lithium abundances at log N(Li) =3–5 that are typical in atmospheres of super lithium-rich AGB giants.
L. Yakovina, Ya. Pavlenko
doaj +1 more source
Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies
Advanced Functional Materials, EarlyView.Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke +3 more
wiley +1 more source
Lithium abundance in extremely metal-poor stars
, 2005 Lithium Abundance, Metal-Poor Stars, VLT ...
Spite, M. +13 more
core +1 more source
Lithium abundances in exoplanet-hosts stars
, 2007 Exoplanet-host stars (EHS) are known to present surface chemical abundances different from those of stars without any detected planet (NEHS). EHS are, on the average, overmetallic compared to the Sun. The observations also show that, for cool stars, lithium is more depleted in EHS than in NEHS. The overmetallicity of EHS may be studied in the framework
Castro, M. +3 more
openaire +3 more sources
The lithium abundance in halo stars
The Astrophysical Journal, 1987 Spectroscopic observations are reported for 23 population II subdwarfs (selected for age homogeneity) and 31 other stars (mainly population I F and G dwarfs). The spectra were obtained in the 670.7-nm line of Li I using coude spectrographs on the 2.7-m reflector at McDonald Observatory, the 3.0-m reflector at Lick Observatory, and the 4-m Mayall ...
L. M. Hobbs, Douglas K. Duncan
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The Creation of Lithium in Giant Stars [PDF]
Highlights of Astronomy, 1995 A time-dependent “convective diffusion” algorithm for convective transport in the mixing-length framework has been coupled for the first time with a self-consistent full evolutionary computation, in order to investigate theoretically the creation of superrich lithium stars on the asymptotic giant branch.
I.-Juliana Sackmann, Arnold I. Boothroyd
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Lithium and Beryllium in One-solar-mass Stars
The Astrophysical Journal, 2022 Abstract The surface content of lithium (Li) and beryllium (Be) in stars can reveal important information about the temperature structure and physical processes in their interior regions. This study focuses on solar-type stars with a sample that is more precisely defined than done previously.
Ann Merchant Boesgaard +3 more
openaire +2 more sources
Advanced Functional Materials, EarlyView.A multifunctional structural power composite is developed by integrating high‐mass‐loading Zn‐ion hybrid supercapacitors with metal mesh current collectors and aramid nanofiber‐based composite electrolytes, enabling simultaneous load‐bearing capability and enhanced areal energy storage.
Yuseung Choi +8 more
wiley +1 more source
Lithium in coalesced non-compact stars [PDF]
, 2022 Context. Galactic red novae are thought to be produced in stellar mergers between non-compact stars, such as main-sequence stars and cool giants. They are hoped to help in explaining physical processes involved in common envelope evolution and stellar ...
Hajduk, Marcin +5 more
core +1 more source