Results 101 to 110 of about 60,555 (229)

Feedback and Brightest Cluster Galaxy Formation: ACS Observations of the Radio Galaxy TN J1338–1942 at z = 4.1 [PDF]

, 2005
We present deep optical imaging of the z = 4.1 radio galaxy TN J1338-1942, obtained using the Advanced Camera for Surveys (ACS) on board the Hubble Space Telescope, as well as ground-based near-infrared imaging data from the European Southern Observatory
A. Zirm, R. Overzier, G. Miley, J. Blakeslee, M. Clampin, C. Breuck, R. Demarco, H. Ford, G. Hartig, N. Homeier, G. Illingworth, A. R. Martel, H. Röttgering, B. Venemans, D. R. Ardila, F. Bartko, Narciso Benitez, R. Bouwens, L. Bradley, T. Broadhurst, Robert A. Brown, C. Burrows, E. S. Cheno, N. Cross, Paul D. Feldman, M. Franx, D. Golimowski, Tomotsugu Goto, C. Gronwall, B. Holden, L. Infante, R. Kimble, J. Krist, Michael P. Lesser, S. Mei, F. Menanteau, G. Meurer, V. Motta, M. Postman, P. Rosati, M. Sirianni, W. Sparks, Hien D. Tran, Z. Tsvetanov, R. White, W. Zheng   +45 more
semanticscholar   +1 more source

Multitarget Recognition of Flower Images Based on Lightweight Deep Neural Network and Transfer Learning

Advanced Intelligent Systems, Volume 8, Issue 2, February 2026.
This article proposes a lightweight YOLOv4‐based detection model using MobileNetV3 or CSPDarknet53_tiny, achieving 30+ FPS and higher mAP. It also presents a ShuffleNet‐based classification model with transfer learning and GAN‐augmented images, improving generalization and accuracy.
Qingyang Liu, Yanrong Hu, Hongjiu Liu
wiley   +1 more source

Star Formation, Radio Sources, Cooling X-Ray Gas, and Galaxy Interactions in the Brightest Cluster Galaxy in 2A0335+096 [PDF]

, 2007
We present deep emission-line imaging taken with the new SOAR Optical Imager of the brightest cluster galaxy (BCG) in the nearby (z = 0.035) X-ray cluster of galaxies 2A0335+096.
M. Donahue, Ming Sun, C. O’Dea, G. Voit, K. Cavagnolo   +4 more
semanticscholar   +1 more source

High‐Coercivity Nd2Fe14B/α‐Fe Nanocomposites With Ultrafine Nanocrystalline Structure via Zr‐Induced Synchronous Precipitation

Rare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Nanocomposite permanent magnets with reduced rare‐earth content represent a promising class of materials for next‐generation high‐performance applications. However, asynchronous precipitation of soft and hard magnetic phases often results in grain size mismatch and limited coercivity.
Xiaowei Zhang, Jun Li, Chang Liu, Renquan Wang, Hongfu Liu, Xiaotao Bao, Ying Liu   +6 more
wiley   +1 more source

WITNESSING THE FORMATION OF A BRIGHTEST CLUSTER GALAXY IN A NEARBY X-RAY CLUSTER [PDF]

, 2010
The central dominant galaxies in galaxy clusters constitute the most massive and luminous galaxies in the universe. Despite this, the formation of these brightest cluster galaxies (BCGs) and the impact of this on the surrounding cluster environment ...
J. Rasmussen, J. Mulchaey, L. Bai, T. Ponman, Somak Raychaudhury, A. Dariush   +5 more
semanticscholar   +1 more source

Fundamental parameters of brightest cluster galaxies

The Astrophysical Journal, 1991
Photometry and spectroscopy of a sample of the brightest cluster galaxies (BCGs) are presented, and the relationships between scale length, surface brightness, velocity dispersion, and line strength are determined and compared with the relations determined for lower luminosity ellipticals (LLEs).
William R. Oegerle, John G. Hoessel
openaire   +1 more source

Upconversion Photoluminescence to Monitor Local Heat Release During Femtosecond Direct Laser Writing of Bioinks In Situ

Small Methods, Volume 10, Issue 4, 23 February 2026.
Upconversion nanoparticle photoluminescence was used to quantify heat burden during femtosecond direct laser writing of bioinks in real time. Transient temperature spikes above 120–140°C demonstrate the need for a stringent process optimization, and fast 20 µm/s scan speeds were established to maintain physiological conditions.
Amirbahador Zeynali, Giuseppe Chirico, Michael Heymann   +2 more
wiley   +1 more source

Revisiting Brightest Cluster Galaxy Evolution with the Las Campanas Distant Cluster Survey [PDF]

, 2001
We investigate the influence of environment on brightest cluster galaxy (BCG) evolution using a sample of 63 clusters at 0.3 ≤ z ≤ 0.9 drawn primarily from the Las Campanas Distant Cluster Survey and follow-up V, I, and K' photometry.
A. Nelson, Anthony H. Gonzalez, D. Zaritsky, J. Dalcanton   +3 more
semanticscholar   +1 more source

The growth of brightest cluster galaxies and intracluster light over the past 10 billion years [PDF]

Monthly notices of the Royal Astronomical Society, 2019
We constrain the evolution of the brightest cluster galaxy plus intracluster light (BCG + ICL) using an ensemble of 42 galaxy groups and clusters that span redshifts of z = 0.05−1.75 and masses of M500,c= 2 × 1013−1015 M⊙.
T. DeMaio, Anthony H. Gonzalez, A. Zabludoff, D. Zaritsky, G. Aldering, M. Brodwin, T. Connor, M. Donahue, B. Hayden, J. Mulchaey, S. Perlmutter, S. Perlmutter, S. Stanford   +12 more
semanticscholar   +1 more source

Galactic Cosmic Ray Ionization on Uranus; Geomagnetic Latitude Dependencies

Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.
Abstract Galactic Cosmic Rays (GCRs) are a major source of atmospheric ionization, influencing ion abundance, aerosol formation, and electrical processes. GCR‐induced effects are expected to be more pronounced on Uranus than planets closer to the Sun for two reasons; reduced solar irradiance, and weaker solar modulation of incident GCR.
Ola Al‐Khuraybi, Karen L. Aplin, Alberto Gambaruto   +2 more
wiley   +1 more source