Results 51 to 60 of about 144,349 (266)

Galaxy Evolution in Compact Groups. III. Structural Analysis of Galaxies and Dynamical State of Non-isolated Compact Groups

The Astrophysical Journal
Compact groups (CGs) of galaxies are dense systems where projected separations are comparable to their optical diameters. A subset—non-isolated CGs—are embedded within major structures. Using multiband S-PLUS data, we analyse galaxies in 122 non-isolated
Gissel P. Montaguth, Ana Laura O’Mill, Claudia Mendes de Oliveira, Ciria Lima-Dias, Sergio Torres-Flores, Antonela Monachesi, D. E. Olave-Rojas, Diego Pallero, Pedro K. Humire, Ricardo Demarco, Eduardo Telles, Paulo A. A. Lopes, Swayamtrupta Panda, Rodrigo F. Haack, Amanda R. Lopes, Alvaro Alvarez-Candal, Analia V. Smith Castelli, Antonio Kanaan, Tiago Ribeiro, William Schoenell   +19 more
doaj   +1 more source

Galaxy Groups as the Ultimate Probe of AGN Feedback

Galaxies
The co-evolution between supermassive black holes and their environment is most directly traced by the hot atmospheres of dark matter halos. The cooling of the hot atmosphere supplies the central regions with fresh gas, igniting active galactic nuclei ...
Dominique Eckert, Fabio Gastaldello, Ewan O’Sullivan, Alexis Finoguenov, Marisa Brienza, the X-GAP Collaboration   +5 more
doaj   +1 more source

The Shapes of Galaxy Groups

The Astrophysical Journal, 1993
The shape of groups of galaxies has been since now a disregarded topic in the literature, mainly due to the fact that individual ellipticity estimates of poor systems are strongly biased toward higher values. Such a bias turns out to depend on both the ellipticity itself and on the richness of the group. In this paper we have devised a modified version
G. Fasano, A. Pisani, R. Vio, GIRARDI, MARISA   +3 more
openaire   +4 more sources

Hot Atmospheres of Galaxies, Groups, and Clusters of Galaxies [PDF]

, 2020
Accepted for publication in the book "Reviews in Frontiers of Modern Astrophysics: From Space Debris to Cosmology" (eds Kabath, Jones and Skarka; publisher Springer Nature) funded by the European Union Erasmus+ Strategic Partnership grant "Per Aspera Ad Astra Simul" 2017-1-CZ01-KA203 ...
Werner, Norbert, Mernier, François
openaire   +2 more sources

Galaxy And Mass Assembly: the xSAGA galaxy complement in nearby galaxy groups

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACT Groups of galaxies are the intermediate density environment in which much of the evolution of galaxies is thought to take place. In spectroscopic redshift surveys, one can identify these as close spatial-redshift associations. However, spectroscopic surveys will always be more limited in luminosity and completeness than imaging ...
B W Holwerda, S Phillipps, S Weerasooriya, M S Bovill, S Brough, M J I Brown, C Robertson, K Cook   +7 more
openaire   +3 more sources

Solid Harmonic Wavelet Bispectrum for Image Analysis

Advanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown, Mathilda Avirett‐Mackenzie, Carolin Villforth, Georgios Exarchakis   +3 more
wiley   +1 more source

Galaxies Caught in Transition: The Role of Group Environment in Shaping the Mass–Size Relation in the Local Universe

The Astrophysical Journal
The stellar mass–size relation is a sensitive probe of how environment shapes galaxy structure. We analyse this relation in the local Universe for galaxies in compact groups (CGs), low-mass groups ( M _vir ≤ 10 ^13 M _⊙ ), and high-mass groups, comparing
Gissel P. Montaguth, Claudia Mendes de Oliveira, Ciria Lima-Dias, Antonela Monachesi, Sergio Torres-Flores, Eduardo Telles, Fábio R. Herpich, Yolanda Jiménez-Teja, Antonio Kanaan, Tiago Ribeiro, William Schoenell   +10 more
doaj   +1 more source

Core to Cosmic Edge: SIMBA-C’s New Take on Abundance Profiles in the Intragroup Medium at z = 0

Universe
We employ the simba-c cosmological simulation to study the impact of its upgraded chemical enrichment model (Chem5) on the distribution of metals in the intragroup medium (IGrM).
Aviv Padawer-Blatt, Zhiwei Shao, Renier T. Hough, Douglas Rennehan, Ruxin Barré, Vida Saeedzadeh, Arif Babul, Romeel Davé, Chiaki Kobayashi, Weiguang Cui, François Mernier, Ghassem Gozaliasl   +11 more
doaj   +1 more source

Mind the Gap: Tightening the Mass-Richness Relation with Magnitude Gaps [PDF]

, 2013
We investigate the potential to improve optical tracers of cluster mass by exploiting measurements of the magnitude gap, m12, defined as the difference between the r-band absolute magnitude of the two brightest cluster members.
Abazajian, Allen, Andreas A. Berlind, Andrew P. Hearin, Andrew R. Zentner, Becker, Behroozi, Berlind, Blanton, Conroy, D'Onghia, Gladders, Hearin, Jeffrey A. Newman, Jones, Klypin, Koester, Kravtsov, Newman, Paranjape, Proctor, Reyes, Riebe, Rozo, Rozo, Rykoff, Skibba, Tinker, Trujillo-Gomez, Watson, Weinberg, Wu, Yang, Zentner   +33 more
core   +1 more source

Liquid Metal Nanotransformers for Drug‐Resistant Pan‐Cancer Therapy in Patient‐Derived Organoids

Advanced Science, EarlyView.
Pan‐cancer therapies are severely limited in drug‐resistance patients due to genetic mutations and other factors, resulting in poor therapeutic outcomes and constrained clinical benefit. Liquid metal nanotransformers, a new class of shape‐transformable nanomaterials capable of dramatic morphological changes, offer a promising physical strategy to ...
Xiaojie Yuan, Xuelin Wang, Zhongyao Chen, Shuo Wang, Weining Gao, Ziyi Chen, Runyang Li, Cheng Hao, Lei Zhang, Qiongqiong Zhang, Ke Zhang, Mei Yu, Qian Liu, Jingxuan Wang, Huiping Li, Simpkins Fiona, Jing Liu, Qiang Liu, Peng Liu, Yawei Hu   +19 more
wiley   +1 more source