Results 91 to 100 of about 51,041 (245)

A Sub‐Diffraction‐Limit Dimension All‐Plasmonic Optical Memory Using Non‐Linear Photochromism

Advanced Science, EarlyView.
An all‐plasmonic optical memory is demonstrated by using nonlinear plasmonics on a sub‐diffraction limit plasmonic nanowire waveguide coated with a photochromic diarylethene that supports the complete memory processes, “Write”, “Erase”, and “Readout” the memory ON/OFF states. Abstract The development of compact, high‐speed, and energy‐efficient optical
Shuichi Toyouchi, Mathias Wolf, Kenji Hirai, Yasuhiko Fujita, Tomoko Inose, Beatrice Fortuni, Eduard Fron, Johan Hofkens, Steven De Feyter, James Hutchison, Tsuyoshi Fukaminato, Hiroshi Uji‐i   +11 more
wiley   +1 more source

Spectrophotometric Observations of Blue Compact Dwarf Galaxies: Markarian 370 [PDF]

The Astrophysical Journal, 2002
We present results from a detailed spectrophotometric analysis of the blue compact dwarf galaxy (BCD) Mrk 370, based on deep UBVRI broad-band and Halpha narrow-band observations, and long-slit and two-dimensional spectroscopy of its brightest knots.
L. M. Cairós, L. M. Cairós, Casiana Muñoz-Tuñón, José M. Vílchez, Begoña García-Lorenzo, Nicola Caon   +5 more
openaire   +4 more sources

Evidence for Mass-dependent Evolution of Transitional Dwarf Galaxies in the Virgo Cluster

The Astrophysical Journal
The presence of transitional dwarf galaxies in cluster environments supports the hypothesis that infalling star-forming galaxies are transformed into quiescent early-type dwarf galaxies (ETdGs) through environmental effects.
Suk Kim, Soo-Chang Rey, Youngdae Lee
doaj   +1 more source

The Formation of Blue Large-amplitude Pulsators from White-dwarf Main-sequence Star Mergers

The Astrophysical Journal, 2023
Blue large-amplitude pulsators (BLAPs) are hot low-mass stars that show large-amplitude light variations likely due to radial oscillations driven by iron group opacities. Period changes provide evidence of both secular contraction and expansion among the
Xianfei Zhang, C. Simon Jeffery, Jie Su, Shaolan Bi   +3 more
doaj   +1 more source

Proton Acceleration with Relativistic Electromagnetic Shock

Advanced Science, EarlyView.
New Ion Acceleration Mechanism! A novel cosmic‐ray proton acceleration mechanism is proposed, where relativistic electromagnetic shocks accelerate protons transversely. Hamiltonian analysis yields a scaling law linking the proton energy to the minimum longitudinal thickness of the shock.
Ting Xiao, Xiaomei Zhang, Fanqiu Kong, Xiaolong Zheng, Zheng Gong, Baifei Shen   +5 more
wiley   +1 more source

Extreme blue compact dwarf galaxies in the Virgo Cluster [PDF]

The Astronomical Journal, 1991
We present CCD images and surface photometry of six "extreme" (especially compact) blue compact dwarf (BCD) galaxies in the Virgo Cluster. The photometric parameters of the galaxies are used to study their possible fate once star formation has ended.
Drinkwater, M., Hardy, E.
openaire   +3 more sources

The Unique Structural Parameters of the Underlying Host Galaxies in Blue Compact Dwarfs [PDF]

, 2014
The nature of possible evolutionary pathways between various types of dwarf galaxies is still not fully understood. Blue compact dwarf galaxies (BCDs) provide a unique window into dwarf galaxy formation and evolution and are often thought of as an evolutionary stage between different classes of dwarf galaxies. In this study we use deep optical and near-
arxiv   +1 more source

A Dual‐Targeting T6SS DNase Drives Bacterial Antagonism and Eukaryotic Apoptosis via the cGAS‐STING‐TNF Axis

Advanced Science, EarlyView.
The bacterial Type VI secretion system (T6SS) emerges as a sophisticated virulence mechanism, leveraging the dual‐function effector TkeA from Yersinia pseudotuberculosis. TkeA concurrently damages rival bacteria and host cell DNA, triggering the host's cGAS‐STING‐TNF pathway and inducing apoptosis.
Li Song, Lei Xu, Pengfei Zhang, Shuying Li, Yichen Qu, Yixin Zhao, Zhenkun Shi, Ruiqi Ma, Yongdong Li, Yi Chen, Yao Wang, Zhengfan Jiang, Gehong Wei, Xihui Shen   +13 more
wiley   +1 more source

CSS 161010: A Luminous Fast Blue Optical Transient with Broad Blueshifted Hydrogen Lines

The Astrophysical Journal
We present ultraviolet, optical, and near-infrared photometric and optical spectroscopic observations of the luminous fast blue optical transient (LFBOT) CSS 161010:045834–081803 (CSS 161010).
Claudia P. Gutiérrez, Seppo Mattila, Peter Lundqvist, Luc Dessart, Santiago González-Gaitán, Peter G. Jonker, Subo Dong, Deanne Coppejans, Ping Chen, Panos Charalampopoulos, Nancy Elias-Rosa, Thomas M. Reynolds, Christopher Kochanek, Morgan Fraser, Andrea Pastorello, Mariusz Gromadzki, Jack Neustadt, Stefano Benetti, Erkki Kankare, Tuomas Kangas, Rubina Kotak, Maximilian D. Stritzinger, Thomas Wevers, Bing Zhang, David Bersier, Subhash Bose, David A. H. Buckley, Raya Dastidar, Anjasha Gangopadhyay, Aleksandra Hamanowicz, Juna A. Kollmeier, Jirong Mao, Kuntal Misra, Stephen. B. Potter, Jose L. Prieto, Encarni Romero-Colmenero, Mridweeka Singh, Auni Somero, Giacomo Terreran, Petri Vaisanen, Łukasz Wyrzykowski   +40 more
doaj   +1 more source

Blue Straggler Stars in Galactic Open Clusters and the effect of field star contamination [PDF]

, 2008
We investigate the distribution of Blue Straggler stars in the field of three open star clusters. The main purpose is to highlight the crucial role played by general Galactic disk fore-/back-ground field stars, which are often located in the same region of the Color Magnitude Diagram as Blue Straggler stars.
arxiv   +1 more source