Results 101 to 110 of about 69,785 (306)

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

Advanced Intelligent Systems, EarlyView.
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

Galaxy Cluster Environments of Radio Sources

, 2011
Using the Sloan Digital Sky Survey (SDSS) and the FIRST (Faint Images of the Radio Sky at Twenty Centimeters) catalogs, we examined the optical environments around double-lobed radio sources. Previous studies have shown that multi-component radio sources
Abazajian, Ascasibar, Bahcall, Blanc, Blanton, Blanton, Blanton, Blanton, Blanton, Blanton, Bower, Bradač, Brodwin, Budavári, Burns, Clarke, Condon, Croft, Csabai, Daddi, Dalton, Deltorn, Dickinson, D’Onghia, Elizabeth L. Blanton, Fanaroff, Gal, Garilli, Gladders, Gladders, Gladders, Gómez, Ivezić, Jee, Joshua D. Wing, Koester, Koester, Krick, Lin, Lin, Lin, Lumsden, Martini, McMahon, Menanteau, Miller, Oklopčić, Ostrander, Owen, Oyaizu, Proctor, Reiprich, Roettiger, Sarazin, Schlegel, Smith, Smolčić, Vanderlinde, Vikhlinin, Voges, Wen, York, Zirbel, Zwicky   +63 more
core   +1 more source

The HI content of the Eridanus group of galaxies [PDF]

, 2004
The HI content of galaxies in the Eridanus group is studied using the GMRT observations and the HIPASS data. A significant HI deficiency up to a factor of 2-3 is observed in galaxies in the high galaxy density regions.
A. Biviano, A. Dressler, A. Omar, A. Omar, A. Schroder, A. Toomre, B. Binggeli, B. M. Poggianti, B. Moore, B. Vollmer, C. Magri, C. N. A. Willmer, G. Fasano, G. L. Hoffman, G. Paturel, H. Bravo-Alfaro, J. E. Gunn, J. M. Solanes, J. S. Mulchaey, K. S. Dwarakanath, L. L. Cowie, L. N. Costa da, L. Verdes-Montenegro, M. Colless, M. J. Meyer, M. P. Haynes, M. Valluri, P. E. J. Nulsen, R. B. Larson, R. D. Davies, R. Giovanelli, V. Cayatte   +31 more
core   +3 more sources

LoCuSS : pre-processing in galaxy groups falling into massive galaxy clusters at z=0.2 [PDF]

, 2017
We report direct evidence of pre-processing of the galaxies residing in galaxy groups falling into galaxy clusters drawn from the Local Cluster Substructure Survey (LoCuSS). 34 groups have been identified via their X-ray emission in the infall regions of
M. Bianconi, Graham P. Smith, C. Haines, S. McGee, A. Finoguenov, E. Egami   +5 more
semanticscholar   +1 more source

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, EarlyView.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

Test of Cosmic Web-feeding Model for Star Formation in Galaxy Clusters in the COSMOS Field

The Astrophysical Journal
It is yet to be understood how large-scale environments influence star formation activity in galaxy clusters. One recently proposed mechanism is that galaxy clusters can remain star forming when fed by infalling groups and star-forming galaxies from ...
Eunhee Ko, Myungshin Im, Seong-Kook Lee, Clotilde Laigle   +3 more
doaj   +1 more source

THERMAL AND CHEMICAL EVOLUTIONS OF GALAXY CLUSTERS OBSERVED WITH SUZAKU

Acta Polytechnica, 2013
We studied the properties of the intracluster medium (ICM) of galaxy clusters to outer regions observed with Suzaku. The observed temperature dropped by about ~30% from the central region to the virial radius of the clusters.
Kosuke Sato, Kyoko Matsushita, Yoshitaka Ishisaki, Noriko Y. Yamasaki, Takaya Ohashi   +4 more
doaj   +1 more source

Simulations of AGN Feedback in Galaxy Clusters and Groups [PDF]

AIP Conference Proceedings, 2009
4 pages, 2 figures, To appear in proceedings of the conference "The Monster's Fiery Breath: Feedback in Galaxies, Groups, and Clusters", June 2009, Madison ...
Ewald Puchwein, Debora Sijacki, Volker Springel, Sebastian Heinz, Eric Wilcots   +4 more
openaire   +3 more sources

The Blooming Tree Algorithm at Work: Clusters, Filaments, and Superclusters in the Field of A2029

The Astrophysical Journal
The Blooming Tree (BT) algorithm, based on the hierarchical clustering method, is designed to identify clusters, groups, and substructures from galaxy redshift surveys.
Heng Yu, Antonaldo Diaferio
doaj   +1 more source

HICOSMO - Cosmology with a complete sample of galaxy clusters: I. Data analysis, sample selection and luminosity-mass scaling-relation

, 2017
The X-ray regime, where the most massive visible component of galaxy clusters, the intra cluster medium (ICM), is visible, offers directly measured quantities, like the luminosity, and derived quantities, like the total mass, to characterize these ...
Reiprich, T. H., Schellenberger, G.
core   +1 more source