Results 21 to 30 of about 69,785 (306)

Galaxy structures — groups, clusters and superclusters [PDF]

International Journal of Geometric Methods in Modern Physics, 2014
We provide a brief summary of the history of galaxy structure studies. We also introduce several large-scale redshift surveys and summarize the most commonly used methods to identify the groups and clusters of galaxies. We present several catalogs of galaxy groups. These catalogs can be used to study the galaxy groups in different environments.
Sepp, Tiit, Gramann, Mirt
openaire   +2 more sources

The Effect of Splashback on Weak Lensing Mass Estimates of Galaxy Clusters and Groups

The Open Journal of Astrophysics, 2023
The splashback radius of a dark matter halo, which corresponds to the first apocenter radius reached by infalling matter and substructures, has been detected around galaxy clusters using a multitude of observational methods, including weak lensing ...
Yuanyuan Zhang, Susmita Adhikari, Matteo Constanzi, Josh Frieman, Jim Annis, Chihway Chang   +5 more
doaj   +2 more sources

Group-Cluster Merging and the Formation of Starburst Galaxies [PDF]

The Astrophysical Journal, 1999
A significant fraction of clusters of galaxies are observed to have substructure, which implies that merging between clusters and subclusters is a rather common physical process of cluster formation. It still remains unclear how cluster merging affects the evolution of cluster member galaxies.
Kenji Bekki
openalex   +4 more sources

Lost but not forgotten: Intracluster light in galaxy groups and clusters [PDF]

, 2017
With Hubble Space Telescope imaging, we investigate the progenitor population and formation mechanisms of the intracluster light (ICL) for 23 galaxy groups and clusters ranging from 3$\times10^{13} 10^{11.6}$ M$_\odot$), while by 100 kpc this colour is ...
T. DeMaio, Anthony H. Gonzalez, A. Zabludoff, D. Zaritsky, T. Connor, M. Donahue, J. Mulchaey   +6 more
semanticscholar   +1 more source

Constraints on the Optical Depth of Galaxy Groups and Clusters [PDF]

, 2016
Future data from galaxy redshift surveys, combined with high-resolutions maps of the cosmic microwave background, will enable measurements of the pairwise kinematic Sunyaev–Zel’dovich (kSZ) signal with unprecedented statistical significance.
S. Flender, D. Nagai, M. McDonald
semanticscholar   +1 more source

Iron in galaxy groups and clusters: confronting galaxy evolution models with a newly homogenized data set [PDF]

, 2016
We present an analysis of the iron abundance in the hot gas surrounding galaxy groups and clusters. To do this, we first compile and homogenize a large data set of 79 low-redshift (z = 0.03) systems (159 individual measurements) from the literature.
R. Yates, P. Thomas, B. Henriques
semanticscholar   +1 more source

Targeted decrease of portal hepatic pressure gradient improves ascites control after TIPS

Hepatology, EarlyView., 2022
The river diagram demonstrates that after transjugular intrahepatic portosystemic shunt insertion (TIPS) the majority of patients without ascites and 50% of the patients with ascites detectable at ultrasound, show the best response in the long term follow‐up.
Alexander Queck, Louise Schwierz, Wenyi Gu, Philip G. Ferstl, Christian Jansen, Frank E. Uschner, Michael Praktiknjo, Johannes Chang, Maximilian J. Brol, Filippo Schepis, Manuela Merli, Christian P. Strassburg, Jennifer Lehmann, Carsten Meyer, Jonel Trebicka   +14 more
wiley   +1 more source

Janus kinase 2 inhibition by pacritinib as potential therapeutic target for liver fibrosis

Hepatology, EarlyView., 2022
Diagram of the activation of the profibrotic and procontractile Janus kinase 2 (JAK2)/Ras homolog family member A/Rho‐kinase pathway and the inhibition of phosphorylated JAK2 by pacritinib to inhibit hepatic stellate cell activity. Abstract Background and Aims Janus kinase 2 (JAK2) signaling is increased in human and experimental liver fibrosis with ...
Sandra Torres, Cristina Ortiz, Nadine Bachtler, Wenyi Gu, Leon D. Grünewald, Nico Kraus, Robert Schierwagen, Christoph Hieber, Caroline Meier, Olaf Tyc, Maximilian Joseph Brol, Frank Erhard Uschner, Bart Nijmeijer, Christoph Welsch, Marie‐Luise Berres, Carmen Garcia‐Ruiz, Jose Carlos Fernandez‐Checa, Christian Trautwein, Thomas J. Vogl, Stefan Zeuzem, Jonel Trebicka, Sabine Klein   +21 more
wiley   +1 more source

Galaxy Quenching with Mass Growth History of Galaxy Groups and Clusters: The Importance of Post-processing

The Astrophysical Journal, 2023
We investigate the fraction of quenched satellite galaxies in host galaxy groups and clusters using TNG300 in the IllustrisTNG cosmological magnetohydrodynamical simulations.
So-Myoung Park, Kyungwon Chun, Jihye Shin, Hyunjin Jeong, Joon Hyeop Lee, Mina Pak, Rory Smith, Jae-Woo Kim   +7 more
doaj   +1 more source

sOPTICS: a modified density-based algorithm for identifying galaxy groups/clusters and brightest cluster galaxies [PDF]

Monthly Notices of the Royal Astronomical Society
ABSTRACT A direct approach to studying the galaxy–halo connection is to analyse groups and clusters of galaxies that trace the underlying dark matter haloes, emphasizing the importance of identifying galaxy clusters and their associated brightest cluster galaxies (BCGs). In this work, we test and propose a robust density-based clustering
Hai-Xia Ma, Tsutomu T. Takeuchi, Suchetha Cooray, Yongda Zhu   +3 more
openalex   +3 more sources