Results 1 to 10 of about 120,881 (178)

Galaxy subgroups in galaxy clusters [PDF]

Monthly Notices of the Royal Astronomical Society, 2012
Galaxies which fall into clusters as part of the same infall halo can retain correlations due to their shared origin. N-body simulations are used to study properties of such galaxy subgroups within clusters, including their richnesses and prevalence. The
Aguerri, Agustsson, Angulo, Azzaro, Bailin, Bailin, Benson, Berrier, Biviano, Blanton, Boschin, Brainerd, Buote, Burgett, Cen, Chambers, Cohn, Colberg, Conroy, Conroy, Conroy, Conroy, Costa-Duarte, Crone, Davis, De Lucia, Deason, den Hartog, den Hartog, Diemand, Dolag, Dressler, Einasto, Espino-Briones, Faltenbacher, Faltenbacher, Faltenbacher, Gao, Gao, Gill, Giocoli, Giocoli, Girardi, Gladders, Gladders, Gurzadyan, Gurzadyan, Hennawi, Hopkins, Hou, Hwang, J. D. Cohn, Jeeson-Daniel, Jeltema, Jiang, Kang, Kasun, Katgert, Klimentowski, Klypin, Knebe, Knebe, Knebe, Knebe, Knebe, Koester, Kuhlen, Lee, Lee, Lee, Lee, Li, Li, Libeskind, Libeskind, Libeskind, Lin, Maccio, McGee, McIntosh, Meneghetti, Milvang-Jensen, Moore, Moster, Navarro, Nierenberg, Noh, Nord, Oegerle, Onuora, Paz, Penarrubia, Pereira, Pinkney, Ragone-Figueroa, Ramella, Richstone, Rykoff, Sales, Saro, Shaw, Simha, Skibba, Skibba, Solanes, Splinter, Springer, Stanek, Steffen, Sunyaev, Taylor, Taylor, van de, van de, van den, van Haarlem, Voit, Wang, Wang, Weller, Wetzel, Wetzel, White, White, White, Wojtak, Wojtak, Yang, Yang, Yang, Zabludoff, Zabludoff, Zabludoff, Zabludoff, Zentner   +134 more
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Structures in Galaxy Clusters [PDF]

The Astrophysical Journal, 1993
The analysis of the presence of substructures in 16 well-sampled clusters of galaxies suggests a stimulating hypothesis: Clusters could be classified as unimodal or bimodal, on the basis of to the sub-clump distribution in the {\em 3-D} space of ...
Biviano, A., Escalera, E., Girardi, M., Giuricin, G., Mardirossian, F., Mazure, A., Mezzetti, M.   +6 more
core   +6 more sources

Formation of Galaxy Clusters [PDF]

Annual Review of Astronomy and Astrophysics, 2012
In this review, we describe our current understanding of cluster formation: from the general picture of collapse from initial density fluctuations in an expanding Universe to detailed simulations of cluster formation including the effects of galaxy ...
Andrey V. Kravtsov, Audit E, Binney J, Bower RG, Brunetti G, Courtin J, Doroshkevich AG, Einasto J, Ettori S, Gott JR, Hubble EP, Klypin AA, Mantz A, Mantz A, McCarthy IG, O'Shea BW, Stefano Borgani, Sunyaev RA, Sunyaev RA, Sunyaev RA, Tissera PB, van Albada GB, Wagner C, Zel'dovich YB, Zwicky F   +24 more
core   +6 more sources

GALAXY DYNAMICS IN CLUSTERS [PDF]

The Astrophysical Journal, 1995
We use high resolution simulations to study the formation and distribution of galaxies within a cluster which forms hierarchically. We follow both dark matter and baryonic gas which is subject to thermal pressure, shocks and radiative cooling.
Evrard, A. E., Frenk, C. S., Summers, FJ, White, S. D. M.   +3 more
core   +5 more sources

Interactions of Galaxies in the Galaxy Cluster Environment [PDF]

The Astrophysical Journal, 2009
We study the dependence of galaxy properties on the clustercentric radius and the environment attributed to the nearest neighbor galaxy using the SDSS galaxies associated with the Abell galaxy clusters.
Adelman-McCarthy, Bekki, Blanton, Blanton, Böhringer, Carlberg, Castander, Changbom Park, Choi, Christlein, Domínguez, Dressler, Fadda, Gnedin, Gott, Gunn, Gunn, Ho Seong Hwang, Hogg, Hwang, Hwang, Hwang, Icke, Miller, Moore, Nulsen, Park, Park, Park, Park, Peebles, Pier, Poggianti, Postman, Quintero, Schlegel, Skibba, Smith, Smith, Stoughton, Tegmark, Tremonti, Treu, Uomoto, York   +44 more
core   +3 more sources

On the Alignment of Galaxies in Clusters [PDF]

Astrophysics, 2020
9 paginas,1 figure, and 7 tables. Accepted in Astrophysics.
Juan Pablo Torres-Papaqui, Hrant M. Tovmassian   +1 more
openaire   +5 more sources

THE ORIENTATION OF GALAXIES IN GALAXY CLUSTERS [PDF]

The Astrophysical Journal, 2010
We present an analysis of the spatial orientations of galaxies in the 247 optically selected rich Abell clusters, having in the considered area at least 100 members. We investigated the relation between angles giving information about galaxy angular momenta and the number of members in each structure.
Piotr Flin, Elena Panko, Wlodzimierz Godlowski, Paulina Piwowarska   +3 more
openaire   +3 more sources

Clusters of Galaxies [PDF]

Highlights of Astronomy, 1977
AbstractClusters and groups of galaxies contain the majority of galaxies in the universe. The rich clusters, while less numerous than the many poor groups, are the densest and largest systems known, and can be easily recognized and studied even at relatively large distances.
openaire   +5 more sources

Accretion of galaxy groups into galaxy clusters [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT We study the role of group infall in the assembly and dynamics of galaxy clusters in ΛCDM. We select 10 clusters with virial mass M200 ∼ 1014 $\rm M_\odot$ from the cosmological hydrodynamical simulation Illustris and follow their galaxies with stellar mass M⋆ ≥ 1.5 × 108 $\rm M_\odot$.
Laura V. Sales, M. G. Abadi, M. G. Abadi, José A. Benavides   +3 more
openaire   +4 more sources

Alignment of galaxies and clusters [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
We investigated the influence of environment on cluster galaxies by examining the alignment of the brightest cluster galaxy (BCG) position angle with respect to the host cluster X-ray position angle. The cluster position angles were measured using high spatial resolution X-ray data taken from the Chandra ACIS archive, that significantly improved the ...
Boehringer, Hans, Hashimoto, Yasuhiro, Boehringer, Hans, Hashimoto, Yasuhiro, Henry, J., Henry, J.   +5 more
openaire   +4 more sources