Results 51 to 60 of about 260 (145)

The Be star o Cas is indeed the primary of a triple system

Astronomy & Astrophysics
Analysis of radial velocities of two narrow absorption components in the Mg II 4481 Å line demonstrated that the secondary of the Be star o Cas is indeed a close binary system composed of two B7 stars orbiting each other with a period of 11.″6604 11
Harmanec P., Yang S., Šlechta M., Grundstrom E. D., Ribeiro J., Harmanec A.   +5 more
doaj   +1 more source

Wavelength and Polarization Multiplexed Nonlocal Metasurface for Quantitative Phase Microscopy

Nanophotonics, Volume 15, Issue 13, 13 July 2026.
A nonlocal metasurface with wavelength and polarization multiplexed optical transfer functions is demonstrated for performing quantitative phase imaging. The metasurface uses the angular dispersion of optical routing guided mode resonances to extract phase gradient information along different directions for phase retrieval. ABSTRACT Imaging transparent
Haiwei Wang, Shikun Ma, Shaban Sulejman, Niken Priscilla, Wendy S. L. Lee, Peter Francis Mathew Elango, Lukas Wesemann, Elizabeth Hinde, Ann Roberts   +8 more
wiley   +1 more source

Double Stars, Double Disks: Discovering the Young Companion of Herbig Be Star MWC 340

The Astrophysical Journal
We present the discovery of a young, close-in companion to the early B-type Herbig Be star MWC 340 (V1685 Cyg), a rare system known to host a protoplanetary disk.
Noura Ibrahim, John D. Monnier, Stefan Kraus, Narsireddy Anugu, Isabelle Codron, Claire L. Davies, Tyler Gardner, Mayra Gutierrez, Cyprien Lanthermann, Gail Schaefer, Benjamin R. Setterholm   +10 more
doaj   +1 more source

Thickness‐Dependent Plasma Activation in Binder‐Free Multilayer Ni–Co–O Anodes for Alkaline Oxygen Evolution

Advanced Energy and Sustainability Research, Volume 7, Issue 7, July 2026.
Depth‐limited nitrogen plasma activation in binder‐free multilayer Ni–Co–O anodes enables thickness‐dependent surface modification. Plasma treatment induces enrichment of Co at the surface, increases nanoscale roughness and pore density, improves wettability, and strengthens interfacial cohesion.
Mohit Chatwani, Christian Marcks, Christina Meinert, Ioannis Spanos, Adarsh Jain, Viktor Mackert, Ahammed Suhail Odungat, Timo Wagner, Lars Grebener, Abhishek Shaji, Hao Yun, Mena‐Alexander Kräenbring, Nicolas Wöhrl, Anna K. Mechler, Vineetha Vinayakumar, Doris Segets   +15 more
wiley   +1 more source

Detection and Astrometry of the Ba–Bb Subsystem in α Piscium: First Dual-field Interferometry at the CHARA Array

The Astronomical Journal
We present the first on-sky demonstration of dual-field interferometry at the Center for High Angular Resolution Astronomy (CHARA) Array and the first direct resolution of the inner Ba–Bb subsystem in the bright hierarchical triple α Piscium.
Narsireddy Anugu, Robert Klement, John D. Monnier, Douglas R. Gies, Gail H. Schaefer, Stefan Kraus, Sebastián Carrazco-Gaxiola, Akshat S. Chaturvedi, Mayra Gutierrez, Becky Flores, Jeremy Jones, Colin Kane, Rainer Köhler, Karolina Kubiak, Olli W. Majoinen, Nicholas J. Scott, Kayvon Sharifi   +16 more
doaj   +1 more source

Profiling Co‐Occurrent Morphological Phenotypes and Their Degree of Expression Severity in Vacuolated Cells by Holo‐Tomographic Flow Cytometry and Fractal Analysis

Advanced Intelligent Systems, Volume 8, Issue 7, July 2026.
HTFC gets 3D refractive index tomograms of flowing cells. Label‐free monocytes are engineered to express patterns of cytoplasmic vacuoles. From the tomogram, an efficient dimensionality reduction is operated. Interpretable features are extracted to classify the expression severity of phenotypes coexisting in each cell, visually represented by a seven ...
Marika Valentino, Giusy Giugliano, Daniele Pirone, Fabrizio Licitra, Fulvia Vitale, Pasquale Memmolo, Lisa Miccio, Massimo D’Agostino, Pietro Ferraro, Vittorio Bianco   +9 more
wiley   +1 more source

Pre-nova Observations of T CrB: A View from the CHARA Array

The Astrophysical Journal Letters
T Coronae Borealis (T CrB, HD 143454) is a symbiotic recurrent nova consisting of a red giant and white dwarf with recent eruptions in 1866 and 1946 and an anticipated eruption in the mid-2020s.
Ryan Norris, Narsireddy Anugu, Thomas Gaudin, Magdalena Otulakowska-Hypka, Fabian Kaczmarek, Cameron Caruso, Cody Gustafson, Andrew Kotowski, Rebecca Proni, Nirupam Roy, Fabien Baron, Dipankar P.K Banerjee, Dana K. Baylis-Aguirre, Michelle J. Creech-Eakman, Justin Linford, Alexandre Gallenne, Joanna Mikołajewska, John D. Monnier, Denis Mourard, Ulisse Munari, Nicolas Nardetto, Rachael M. Roettenbacher, Jennifer L Sokoloski, Montana Williams, C. E. Woodward, Stefan Kraus, Jean-Baptiste Le Bouquin, Sorabh Chhabra, Isabelle Codron, Jacob Ennis, Tyler Gardner, Mayra Gutierrez, Noura Ibrahim, Cyprien Lanthermann, Benjamin R. Setterholm, Christopher D. Farrington, Olli Majoinen, Norm Vargas, Douglas R. Gies, Gail H. Schaefer, Theo ten Brummelaar   +40 more
doaj   +1 more source

Noise Resilient Real‐Time Phase Imaging via Undetected Light

Advanced Quantum Technologies, Volume 9, Issue 7, July 2026.
Quantum imaging with undetected light enables decoupled illumination and detection, but real‐time operation under strong noise conditions remains challenging. By combining nonlinear interferometry with off‐axis holography, this work demonstrates real‐time amplitude and phase imaging at up to 4 Hz, even when noise exceeds the signal by an order of ...
Josué R. León‐Torres, Patrick Hendra, Yugant Mukeshbhai Hadiyal, Christopher Spiess, Fabian Steinlechner, Frank Setzpfandt, Markus Gräfe, Valerio Flavio Gili   +7 more
wiley   +1 more source

A Search for Be Stars in Multiple Systems within the Solar Neighborhood

The Astrophysical Journal
Be stars are widely considered to be the product of binary interaction. However, whether all Be stars are formed via binary interaction is unclear, and detailed estimates of the multiplicity of Be stars and characterization of their components are ...
V. M. Kalari, R. Salinas, C. Sáez-Carvajal, R. D. Oudmaijer, S. Howell, S. Caballero-Nieves, K. Kamp, R. Matson, N. Scott, T. Cao, Z. Hartman, H. Kim   +11 more
doaj   +1 more source

Record Index–Bandgap Trade‐Off: CdPS3 as a High‐Index van der Waals Platform for Ultraviolet–Visible Nanophotonics

Nanophotonics, Volume 15, Issue 11, 13 June 2026.
The fundamental index–bandgap trade‐off strictly limits materials for short‐wavelength nanophotonics. The van der Waals crystal CdPS3 emerges as a compelling alternative platform challenging this paradigm. Combining an exceptionally high refractive index approaching 3 with a broad mid‐infrared‐to‐ultraviolet transparency window, CdPS3 unlocks new ...
Maksim R. Povolotskiy, Aleksandr S. Slavich, Georgy A. Ermolaev, Dmitriy V. Grudinin, Nikolay V. Pak, Ilya A. Zavidovskiy, Konstantin V. Kravtsov, Anton A. Minnekhanov, Mikhail K. Tatmyshevskiy, Alexander V. Syuy, Dmitry I. Yakubovsky, Arslan Mazitov, Liudmila A. Klimova, Adilet N. Toksumakov, Alexander V. Melentev, Elena Zhukova, Davit A. Ghazaryan, Gleb Tselikov, Ivan Kruglov, Sergey M. Novikov, Andrey A. Vyshnevyy, Aleksey V. Arsenin, Kostya S. Novoselov, Valentyn S. Volkov   +23 more
wiley   +1 more source