Results 71 to 80 of about 193,941 (350)

The Arecibo Galaxy Environment Survey VIII : Discovery of an Isolated Dwarf Galaxy in the Local Volume [PDF]

, 2014
The Arecibo Galaxy Environment Survey (AGES) has detected a nearby HI source at a heliocentric velocity of +363 km/s . The object was detected through its neutral hydrogen emission and has an obvious possible optical counterpart in Sloan Digital Sky ...
Herbst, H., Minchin, R. F., Smith, R., Taylor, R.   +3 more
core   +1 more source

Parametric Design of Continuum Robots Using Interlocking Ball Joints

Advanced Intelligent Systems, EarlyView.
Herein, a parametric design methodology is introduced for producing a wide variety of modular ball joint‐based continuum robots. It is demonstrate by designing a magnetically actuated continuum robot for cardiac ablations. The methodology is released as an open‐source computer‐assisted design extension that automatically designs continuum robots based ...
Alexandre Mesot, Quentin Boehler, Florian Heemeyer, Sean Lyttle, Buse Aktaş, Bradley J. Nelson   +5 more
wiley   +1 more source

HerS-3: An Exceptional Einstein Cross Reveals a Massive Dark Matter Halo

The Astrophysical Journal
We present a study of HerS-3, a dusty star-forming galaxy at z _spec  = 3.0607, which is gravitationally amplified into an Einstein cross with a fifth image of the background galaxy seen at the center of the cross.
P. Cox, K. M. Butler, C. R. Keeton, L. Eid, E. Borsato, T. J. L. C. Bakx, R. Neri, B. M. Jones, P. Prajapati, A. J. Baker, S. Berta, A. Cooray, E. M. Corsini, L. Marchetti, A. Omont, A. Beelen, R. Gavazzi, D. Ismail, R. J. Ivison, M. Krips, M. D. Lehnert, H. Messias, D. Riechers, C. Vlahakis, A. Weiss, P. van der Werf, C. Yang   +26 more
doaj   +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

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

A Physically Motivated Framework to Compare Pair Fractions of Isolated Low- and High-mass Galaxies across Cosmic Time

The Astrophysical Journal
Low-mass galaxy pair fractions are understudied, and it is unclear whether low-mass pair fractions evolve in the same way as more massive systems over cosmic time. In the era of JWST, Roman, and Rubin, selecting galaxy pairs in a self-consistent way will
Katie Chamberlain, Gurtina Besla, Ekta Patel, Vicente Rodriguez-Gomez, Paul Torrey, Garreth Martin, Kelsey Johnson, Nitya Kallivayalil, David Patton, Sarah Pearson, George Privon, Sabrina Stierwalt   +11 more
doaj   +1 more source

Dwarf Galaxies in Focus: A Survey of Observational and Theoretical Studies

Galaxies
This paper presents provides a comprehensive survey of dwarf galaxies, which represent the most numerous and diverse systems in the Universe. We discuss their definitions and morphological classifications, emphasizing the unique properties that ...
Komiljon Tillaboev, Ikram Tadjibaev, Kamolidin Mamadaliyev, Dildor Otajonova, Malokhat Atajonova, Bagzodbek Abdullayev   +5 more
doaj   +1 more source

A Search for Gas-Rich Dwarf Galaxies in the Local Universe with ALFALFA and the WIYN One Degree Imager

The Astronomical Journal, 2023
We present results from an optical search for Local Group dwarf galaxy candidates associated with the Ultra-Compact High Velocity Clouds (UCHVCs) discovered by the ALFALFA neutral hydrogen survey.
Katherine L. Rhode, Nicholas J. Smith, William F. Janesh, John J. Salzer, Elizabeth A. K. Adams, Martha P. Haynes, Steven Janowiecki, John M. Cannon   +7 more
doaj   +1 more source

Isolated Galaxies, Pairs and Groups of Galaxies [PDF]

International Astronomical Union Colloquium, 1990
We searched for isolated galaxies, pairs and groups of galaxies in the CfA survey (Huchra et al. 1983). It was assumed that the distances to galaxies are given by R = V/H0, where H0 = 100 km s−1 Mpc−1 and R> 6 Mpc.
I. Kuneva, M. Kalinkov
openaire   +2 more sources

NGC1600 - Cluster or Field Elliptical?

, 2008
A study of the galaxy distribution in the field of the elliptical galaxy NGC1600 has been undertaken. Although this galaxy is often classified as a member of a loose group, all the neighbouring galaxies are much fainter and could be taken as satellites ...
Alberto Fernández‐Soto, Amelia Ortiz‐Gil, Baiesi-Pillastrini G. C., Bender R., Danese L., Fernando J. Ballesteros, Khosroshahi H. G., Lewis G., Maddox S. J., Rodney M. Smith, Vicent J. Martínez   +10 more
core   +1 more source