Results 131 to 140 of about 12,741,185 (402)

Galaxy Assembly Bias in the Stellar-to-halo Mass Relation for Red Central Galaxies from SDSS

The Astrophysical Journal
We report evidence of galaxy assembly bias—the correlation between galaxy properties and biased secondary halo properties at fixed halo mass ( M _H )—in the stellar-to-halo mass relation for red central galaxies from the Sloan Digital Sky Survey.
Grecco A. Oyarzún, Jeremy L. Tinker, Kevin Bundy, Enia Xhakaj, J. Stuart B. Wyithe   +4 more
doaj   +1 more source

The origin of redshift asymmetries: How LambdaCDM explains anomalous redshift

, 2008
Several authors have found a statistically significant excess of galaxies with higher redshifts relative to the group centre, so-called discordant redshifts, in particular in groups where the brightest galaxy, identified in apparent magnitudes, is a ...
Arp, Arp, Bahcall, Berlind, Bottinelli, Botzler, Byrd, Croton, D'Onghia, Diaferio, Driver, Einasto, Eke, Eke, Focardi, Geller, Girardi, Goto, Goto, Hickson, Hickson, Hickson, Holmberg, Huchra, Humason, Iovino, Jaakkola, Jerjen, Jones, Karachentsev, Kim, Koester, Lucia, M. Valtonen, Mahdavi, Materne, Merchán, Moore, Niemi, Nolthenius, Ostriker, Ponman, Ramella, Ramella, Rekola, Rekola, S.-M. Niemi, Santos, Schechter, Shakhbazyan, Simien, Springel, Springel, Springel, Sulentic, Tago, Tago, Teerikorpi, Tucker, Tully, Turner, Valtonen, Yang, Zabludoff, Zaritsky   +64 more
core   +1 more source

The Orientation of Galaxies in Nearby Galaxy Groups [PDF]

Symposium - International Astronomical Union, 2004
The statistical analysis of six nearby groups of galaxies, connected with the Milky Way, M31, M81, M101, NGC5128 and NGC5236 shows an isotropic distribution of galaxy planes, similarly to galaxies within the Local Group. Also planes of galaxies in the nearby (Vr < 500 km s−1) region of the Local Supercluster exhibit random distribution, disregarding
Piotr Flin, M. Biernacka, J. Krywult
openaire   +2 more sources

The Leo-I group: new dwarf galaxy and ultra diffuse galaxy candidates [PDF]

Astronomy & Astrophysics, 2018
Context. The study of dwarf galaxies and their environments provides crucial test beds for predictions of cosmological models and insights into the structure formation on small cosmological scales. In recent years, many problems on the scale of groups of
O. Müller, H. Jerjen, B. Binggeli
semanticscholar   +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

The baryon budget on the galaxy group/cluster boundary [PDF]

, 2012
We present a study of the hot gas and stellar content of five optically selected poor galaxy clusters, including a full accounting of the contribution from intracluster light (ICL) and a combined hot gas and hydrostatic X-ray mass analysis with XMM ...
A. Sanderson, E. O’Sullivan, E. O’Sullivan, T. Ponman, Anthony H. Gonzalez, Suresh Sivanandam, Suresh Sivanandam, A. Zabludoff, D. Zaritsky   +8 more
semanticscholar   +1 more source

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

The Globular Cluster System of the Galaxy NGC 6876

Galaxies, 2017
We present preliminary results of the deep photometric study of the elliptical galaxy NGC 6876, located at the center of the Pavo group, and its globular cluster system.
Ana Inés Ennis, Lilia Patricia Bassino, Juan Pablo Caso   +2 more
doaj   +1 more source

The Identification of a Dusty Multiarm Spiral Galaxy at z = 3.06 with JWST and ALMA

The Astrophysical Journal Letters, 2022
Spiral arms serve crucial purposes in star formation and galaxy evolution. In this paper, we report the identification of “A2744-DSG- z 3,” a dusty, multiarm spiral galaxy at z = 3.059 using the James Webb Space Telescope (JWST) NIRISS imaging and grism ...
Yunjing Wu, Zheng Cai, Fengwu Sun, Fuyan Bian, Xiaojing Lin, Zihao Li, Mingyu Li, Franz E. Bauer, Eiichi Egami, Xiaohui Fan, Jorge González-López, Jianan Li, Feige Wang, Jinyi Yang, Shiwu Zhang, Siwei Zou   +15 more
doaj   +1 more source

Radio galaxy feedback in X-ray selected groups from COSMOS: the effect on the ICM [PDF]

, 2010
We quantify the importance of the mechanical energy released by radio-galaxies inside galaxy groups. We use scaling relations to estimate the mechanical energy released by 16 radio-AGN located inside X-ray detected galaxy groups in the COSMOS field.
A. Finoguenov, A. M. Koekemoer, A. Oklopčić, Bîrzan, Bîrzan, Condon, D. B. Sanders, D. Pierini, D. Thompson, De Young, Donahue, Drory, Dunkley, E. Schinnerer, Finoguenov, G. W. Pratt, G. Zamorani, Giodini, Gitti, H. Boehringer, Heinz, Ilbert, J. S. Kartaltepe, L. Bîrzan, Leauthaud, Lin, M. Salvato, Markevitch, Peterson, Pratt, Puchwein, R. Massey, Reiprich, S. Giodini, Salvato, Schinnerer, Scoville, Short, Skrutskie, Smolčić, Smolčić, Sun, V. Smolčić, Voit, Wright   +44 more
core   +4 more sources