Results 51 to 60 of about 2,436 (245)

Physical Parameters and Properties of 20 Cold Brown Dwarfs in JWST

The Astrophysical Journal
We present a comprehensive analysis of 20 T and Y dwarfs using spectroscopy from the Near-Infrared Spectrograph (NIRSpec) CLEAR/PRISM and Mid-Infrared Instrument (MIRI) low-resolution spectrometer instruments on the James Webb Space Telescope.
Zhijun Tu, Shu Wang, Jifeng Liu
doaj   +1 more source

GIANOY-band spectroscopy of dwarf stars: Phosphorus, sulphur, and strontium abundances [PDF]

Astronomy & Astrophysics, 2015
In recent years a number of poorly studied chemical elements, such as phosphorus, sulphur, and strontium, have received special attention as important tracers of the Galactic chemical evolution. By exploiting the capabilities of the infrared echelle spectrograph GIANO mounted at the Telescopio Nazionale Galileo, we acquired high resolution spectra of ...
Caffau, E., Andrievsky, S., Korotin, S., Origlia, L., Oliva, E., Sanna, N., Ludwig, H.-G., Bonifacio, P.   +7 more
openaire   +4 more sources

Immune Checkpoint Inhibitor–Related Myositis and Associated Triad Overlap Syndrome

Arthritis Care &Research, EarlyView.
Objective Immune checkpoint inhibitor (ICI) myositis is a rare but a highly morbid condition, particularly with the ICI myositis triad syndrome of myositis, myocarditis, and myasthenia gravis. We report the clinical characteristics of ICI myositis and all‐cause mortality in these patients.
Selene Rubino, Grant W. Cannon, Brian C. Sauer, Jorge Rojas, Gregory J. Stoddard, Gary A. Kunkel, Jessica A. Walsh, Bryant R. England, Joshua F. Baker, Tawnie J. Braaten   +9 more
wiley   +1 more source

Searching for binary Y dwarfs with the Gemini Multi-Conjugate Adaptive Optics System (GeMS) [PDF]

, 2014
The NASA Wide-field Infrared Survey Explorer (WISE) has delivered an exceptional harvest of new ultra-cool Y-type brown dwarfs. We present results from a diffraction-limited study of the binary status of a sample of Y dwarfs observed with the Gemini GeMS
Tinney, Chris, Opitz, Daniela (5302756), Tinney, Chris (5302759), Opitz, Daniela   +3 more
core   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Low Cycle Repetitive Loading of Ti‐6Al‐4V‐Epoxy Composite Lattice Structures for Enhanced Energy Dissipation and Damage Tolerance

Advanced Engineering Materials, EarlyView.
Composite Ti–6Al–4V–epoxy lattice structures are additively manufactured and epoxy infiltrated for cyclic loading. At low lattice volume fractions, hybridization produces synergistic gains in stiffness and energy dissipation. At higher volume fractions, synergy diminishes, although composites still exceed metallic lattices in specific energy ...
Joey Tallon, Jordan Noronha, Justin Dirrenberger, Andrey Molotnikov   +3 more
wiley   +1 more source

The CARMENES search for exoplanets around M dwarfs [PDF]

, 2020
Due to their ubiquity and very long main-sequence lifetimes, abundance determinations in M dwarfs provide a powerful and alternative tool to GK dwarfs to study the formation and chemical enrichment history of our Galaxy.
Jeffers, S., Amado, P. J., V. J. S. Béjar, Caballero, J. A., Ribas, Ignasi, Passegger, V., D. Montes, Montes, D., Ribas, I., Henning, Th., Schweitzer, A., J. C. Morales, Korotin, S. A., E. Marfil, N. Prantzos, A. Kaminski, O. Straniero, C. Rodríguez López, Béjar, V., Kaminski, Adrian, M. Lafarga, A. Quirrenbach, Zechmeister, M., A. Reiners, Marfil, E., Th. Henning, M. Zechmeister, Lafarga, M., Nagel, E., Passegger, V. M., Kürster, M., Abia, Carlos, Caballero, J., Béjar, V. J. S., Jeffers, S. V., Abia, C., Nagel, Evangelos, Cortés-Contreras, M., Henning, Thomas, S. A. Korotin, Reiners, Ansgar, Zechmeister, Mathias, Á. López-Gallifa, Pedraz, S., M. Kürster, Dreizler, Stefan, V. M. Passegger, S. Pedraz, Rodríguez López, C., Rodríguez-López, Cristina, H. M. Tabernero, Schweitzer, Andreas, Béjar, Victor J. S., Montes, David, Dreizler, S., Morales, Juan Carlos, Kaminski, A., Passegger, V.M., Quirrenbach, Andreas, S. Dreizler, Amado, P., Jeffers, Sandra V., I. Ribas, S. V. Jeffers, E. Nagel, Prantzos, N., López-Gallifa, Á., P. J. Amado, Morales, J. C., C. Abia, A. Schweitzer, Tabernero, H., Korotin, S., Morales, J., M. Cortés-Contreras, Tabernero, H. M., Quirrenbach, A., Amado, Pedro J., Reiners, A., Straniero, O., J. A. Caballero   +80 more
core   +1 more source

Disequilibrium Chemistry, Diabatic Thermal Structure, and Clouds in the Atmosphere of COCONUTS-2b

The Astronomical Journal
Located 10.888 pc from Earth, COCONUTS-2b is a planetary-mass companion to a young (150–800 Myr) M3 star, with a wide orbital separation (6471 au) and a low companion-to-host mass ratio (0.021 ± 0.005).
Zhoujian Zhang, Sagnick Mukherjee, Michael C. Liu, Jonathan J. Fortney, Emily Mader, William M. J. Best, Trent J. Dupuy, Sandy K. Leggett, Theodora Karalidi, Michael R. Line, Mark S. Marley, Caroline V. Morley, Mark W. Phillips, Robert J. Siverd, Joseph A. Zalesky   +14 more
doaj   +1 more source

Ultrasmall High‐Entropy Materials: Nanoscale Effects, Synthesis, and Mechanistic Insights

Advanced Functional Materials, EarlyView.
This review article focuses on sub‐10 nm high‐entropy materials that combine nanoscale design with complex compositions for next‐generation applications. ABSTRACT Ultrasmall high‐entropy nanomaterials (USHENMs, <10 nm) merge multicomponent chemistry with size‐dependent effects, forming a distinct class of materials with unprecedented properties.
Yueyue He, Wenbo Wang, Simon Schweidler, Yanjiao Ma, Ben Breitung, Torsten Brezesinski   +5 more
wiley   +1 more source

Ultrathin Li Metal Anodes: Quantitative Design Principles and Manufacturability Across Liquid and Solid‐State Batteries

Advanced Materials, EarlyView.
Ultrathin lithium metal anodes (≤15 µm) offer a promising route to high‐energy‐density batteries due to their high capacity and low potential. This review presents design principles for ultrathin Li, evaluates fabrication strategies, and discusses challenges in liquid and solid‐state cells.
Cheng Wang, Caoyu Wang, Shuixin Xia, Jodie A. Yuwono, Mingnan Li, Yanqiu Lyu, Ruizhi Zhang, Jun Wang, Jianfeng Mao, Zaiping Guo   +9 more
wiley   +1 more source