Results 91 to 100 of about 635,098 (305)

New Insight of Time-transformed Symplectic Integrator. I. Hybrid Methods for Hierarchical Triples

The Astrophysical Journal
Accurate N -body simulations of multiple systems such as binaries and triples are essential for understanding the formation and evolution of interacting binaries and binary mergers, including gravitational wave sources, blue stragglers, and X-ray ...
Long Wang
doaj   +1 more source

Electric Field Modulation of Interlayer Coupling via Piezostrain in a Synthetic Antiferromagnet

Advanced Science, EarlyView.
Controlling the interlayer exchange coupling (IEC) in synthetic antiferromagnets (SAFs) using an electric field is a promising route toward energy‐efficient spintronic devices. In this study, electric field induced‐strain modulation of IEC in Co/Ru/Co SAF/PMN‐PT is demonstrated.
Yuichi Hisada, Sachio Komori, Keiichiro Imura, Chenyu Shen, Yoshihiro Gohda, Calvin Ching Ian Ang, Wen Siang Lew, Tomoyasu Taniyama   +7 more
wiley   +1 more source

WIYN Open Cluster Study. XC. Radial-velocity Measurements and Spectroscopic Binary Orbits in the Open Cluster NGC 2506

The Astronomical Journal
NGC 2506 is a rich, intermediate-age (2.0 Gyr), metal-poor ([Fe/H] ∼ −0.2) open cluster. This work presents the results of 12,157 spectroscopic radial-velocity measurements of 2442 stars in the NGC 2506 field obtained over 41 yr, made as part of the WIYN
Evan Linck, Robert D. Mathieu, David W. Latham   +2 more
doaj   +1 more source

VO2 Oscillator Circuits Optimized for Ultrafast, 100 MHz‐Range Operation

Advanced Electronic Materials, EarlyView.
The present study demonstrates ultrasmall (≈30 nm) VO2 Mott memristor‐based oscillators which enter the >100 MHz frequency range via device scaling and optimization of the circuit layout for high frequency operation. Time‐resolved investigation of switching dynamics along with circuit‐level and physics‐based electrothermal simulations identify physical
Zsigmond Pollner, Tímea Nóra Török, László Pósa, Miklós Csontos, Sebastian Werner Schmid, Zoltán Balogh, András Bükkfejes, Heungsoo Kim, Alberto Piqué, Juerg Leuthold, János Volk, András Halbritter   +11 more
wiley   +1 more source

Identification of Blue Horizontal-branch Stars Using Synthetic SkyMapper Colors from Gaia XP Spectra

The Astrophysical Journal Supplement Series
Blue horizontal-branch (BHB) stars are ideal tracers for mapping the structure of the Galactic stellar halo. Traditionally, BHB sample stars are built from large-scale spectroscopic surveys utilizing their spectral features; however, the resulting sample
Guozhen Hu, Yang Huang, Wenyuan Cui, Tao Wang, Kai Xiao, Ruifeng Shi, Jie Ju, Bowen Huang, Chunyan Li, Zhicun Liu, Xiaolong Wang, Changqing Luo   +11 more
doaj   +1 more source

Nonstandard Modeling of a Possible Blue Straggler Star, KIC 11145123 [PDF]

, 2021
Yoshiki Hatta, T. Sekii, M. Takata, O. Benomar   +3 more
openalex   +1 more source

Amphiphilic Polymer Conetworks for Non‐Fullerene Organic Solar Cells: Regulated Molecular Stacking Enables Efficient Downconversion

Advanced Energy Materials, EarlyView.
This work presents a novel bulk‐heterojunction‐integrated organic luminophore geometry using amphiphilic polymer conetworks as an interlayer scaffold. The design enhances optoelectronic performance via efficient downconversion and reinforced molecular stacking, offering a versatile architecture that paves the way for next‐generation organic solar cells.
Chieh‐Szu Huang, Danbi Kim, Wenyan Yang, Yang Lu, Robert J. E. Westbrook, Huagui Lai, Zimu Wei, Chaeyeon Lee, Fan Fu, Neil C. Greenham, Bo Ram Lee, Samuel D. Stranks   +11 more
wiley   +1 more source

Hidden Figures of Globular Clusters: Integrated Stellar Populations Impacted by Hot Subdwarfs

The Astrophysical Journal
Globular clusters (GCs) are fundamental for understanding the integrated light of old stellar populations and galaxy assembly processes. However, the role of hot, evolved stars, such as horizontal branch (HB), extreme HB, and blue stragglers, remains ...
Thayse A. Pacheco, Paula R. T. Coelho, Lucimara P. Martins, Ricardo P. Schiavon, Erik V. R. de Lima, Marcos P. Diaz, Domenico Nardiello, Ronaldo S. Levenhagen, Rogério Riffel, Charles J. Bonatto, Ana L. Chies-Santos   +10 more
doaj   +1 more source

A Spectroscopic Study of Blue Stragglers in M67 [PDF]

Proceedings of the International Astronomical Union, 2008
AbstractSpectrophotometric observations of the complete sample of twenty four blue stragglers (BSs) in the old galactic open cluster M67 (NGC2682) have been collected, using the Guillermo Haro Observatory in Cananea, Mexico. All the calibrated spectra were re-calibrated by the Beijing Arizona Taipei Connecticut (BATC) photometric system which includes ...
G. Q. Liu, L. Deng, M. Chávez, E. Bertone   +3 more
openaire   +1 more source

Design of Compact Liquid Crystal on Silicon Projection Optics Utilizing a Common Freeform Optical Path for Augmented Reality Displays

Advanced Intelligent Systems, EarlyView.
This study presents a compact freeform projection optics using dual wedge prisms for waveguide displays. Unlike previous designs that separate illumination and imaging paths, a freeform optical path integrates both. The system achieves a 32º field of view, 37.5 pixels per degree, and a total volume of less than 2 cm3.
Ximeng Wang, Dewen Cheng, Yuefan Shan, Da Wang, Tong Yang, Yongtian Wang   +5 more
wiley   +1 more source