Results 71 to 80 of about 68,025 (275)

X-RAY EMISSION AND ORIENTATION OF SELECTED PF GALAXY CLUSTERS

Odessa Astronomical Publications, 2016
X-ray counterparts for 35 galaxy clusters contained in the PF catalogue of galaxy clusters and groups were found in XMM-Newton archive. 22 ones (all from ACO catalogue) have extended elliptic X-ray haloes appropriate for determination of orientation ...
A. V. Tugay, S. S. Dylda, E. A. Panko
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

Galaxy Superclusters Detected in the Modified PF-Catalog Using the FOF Method

Open Astronomy, 2011
The Modified Catalog of Galaxy Clusters and Groups (Panko & Flin 2006, PF), covering an area of 5000 square degrees in the southern sky, was used as the input for the search of galaxy superclusters.
Panko E.
doaj   +1 more source

Shell-like structures in our cosmic neighbourhood

, 2016
Signatures of the processes in the early Universe are imprinted in the cosmic web. Some of them may define shell-like structures characterised by typical scales.
Arnalte-Mur, P., Einasto, J., Einasto, M., Heinämäki, P., Hurtado-Gil, L., Liivamägi, L. J., Martinez, V. J., Nurmi, P., Saar, E.   +8 more
core   +1 more source

The galaxy environment in GAMA G3C groups using the Kilo Degree Survey Data Release 3 [PDF]

, 2018
We aim to investigate the galaxy environment in GAMA Galaxy Groups Catalogue (G3C) using a volume-limited galaxy sample from the Kilo Degree Survey Data Release 3.
Bilicki, M., Brouwer, M. M., Buddelmeijer, H., Costa-Duarte, M. V., de Jong, J. T. A., Getman, F., Grado, A., Kleijn, G. V., Kuijken, K., Molino, A., Napolitano, N., Puddu, E., Radovich, M., Sodré Jr., L., Vakili, M., Viola, M.   +15 more
core   +5 more sources

Mock Observations: Formation and Evolution of Diffuse Light in Galaxy Groups and Clusters in the IllustrisTNG Simulations

The Astrophysical Journal, 2023
In this paper, by analyzing mock images from the IllustrisTNG100-1 simulation, we examine the properties of diffuse light and compare them to those of central and satellite galaxies.
Lin Tang, Weipeng Lin, Yang Wang, Jing Li, Yanyao Lan   +4 more
doaj   +1 more source

Physical Implications of the X-ray Properties of Galaxy Groups and Clusters [PDF]

, 2001
Within the standard framework of structure formation, where clusters and groups of galaxies are built up from the merging of smaller systems, the physical properties of the intracluster medium, such as the gas temperature and the total X-ray luminosity ...
A. Babul, M. Balogh, G. Lewis, G. Poole
semanticscholar   +1 more source

Entropy amplification from energy feedback in simulated galaxy groups and clusters [PDF]

, 2005
We use hydrodynamical simulations of galaxy clusters and groups to study the effect of pre–heating on the entropy structure of the intra–cluster medium (ICM).
S. Borgani, A. Finoguenov, S. Kay, T. Ponman, V. Springel, P. Tozzi, G. Voit   +6 more
semanticscholar   +1 more source

Multivariate analysis of the globular clusters in M87

, 2015
An objective classification of 147 globular clusters in the inner region of the giant elliptical galaxy M87 is carried out with the help of two methods of multivariate analysis.
Chattopadhyay, Tanuka, Das, Sukanta, Davoust, Emmanuel   +2 more
core   +1 more source

Galaxy evolution near groups and clusters: ejected satellites and the spatial extent of environmental quenching [PDF]

, 2013
Galaxies that are several virial radii beyond groups/clusters show preferentially quiescent star formation rates (SFR). Using a galaxy group/cluster catalogue from the Sloan Digital Sky Survey, together with a cosmologicalN-body simulation, we examine ...
A. Wetzel, J. Tinker, C. Conroy, F. V. D. Bosch   +3 more
semanticscholar   +1 more source