Results 11 to 20 of about 2,402,391 (371)

Detection of a Star Forming Galaxy in the Center of a Low-Mass Galaxy Cluster [PDF]

, 2018
Brightest Cluster Galaxies (BCGs) residing in the centers of galaxy clusters are typically quenched giant ellipticals. A recent study hinted that star-forming galaxies with large disks, so-called superluminous spirals and lenticulars, are the BCGs of a subset of galaxy clusters.
Andrade-Santos, Felipe, Bogdan, Akos, Forman, William R., Jones, Christine, Kovacs, Orsolya E., Kraft, Ralph P., Lovisari, Lorenzo   +6 more
arxiv   +3 more sources

Velocity Dispersion of 335 Galaxy Clusters Selected from the Sloan Digital Sky Survey: Statistical Evidence for Dynamical Interaction, and Against Ram-Pressure Stripping [PDF]

Mon.Not.Roy.Astron.Soc. 359 (2005) 1415-1420, 2005
There has been plenty of observational evidence of cluster galaxy evolution. However, it has been difficult to identify the origin of the cluster galaxy evolution. Here we show that gravitational interaction/friction between galaxies is the statistically dominant physical mechanism responsible for the cluster galaxy evolution, and that the well-favored
Abadi, Abazajian, Adami, Adami, Andreon, Andreon, Andreon, Beers, Bekki, Bennett, Biviano, Biviano, Blanton, Butcher, Butcher, Carlberg, Couch, Couch, Czoske, Danese, Dressler, Ellingson, Fabricant, Farouki, Fasano, Finn, Fujita, Fujita, Fujita, Gal, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Gunn, Gómez, Icke, Jones, Kauffmann, Kauffmann, Kennicutt, Kent, Kodama, Kodama, Lares, Larson, Lavery, Makino, Mamon, Mamon, Margoniner, Margoniner, McIntosh, Moore, Moore, Ostriker, Poggianti, Postman, Postman, Postman, Quilis, Rakos, Schlegel, Shimasaku, Sodre, Stein, Strateva, Tanaka, Tomotsugu Goto, Treu, van Dokkum, Yamauchi, Zabludoff   +79 more
arxiv   +3 more sources

Galaxy cluster mergers [PDF]

Monthly Notices of the Royal Astronomical Society, 2009
We present the results of an Eulerian adaptive mesh refinement (AMR) hydrodynamical and N-body simulation in a $\Lambda$CDM cosmology. The simulation incorporates common cooling and heating processes for primordial gas.
Agertz, Arnaud, Balogh, Bialek, Borgani, Borgani, Borgani, Bryan, Burns, Chen, Davé, De Grandi, Eisenstein, Ettori, Fabian, Frenk, Gill, Haardt, Hartley, Kaiser, Katz, Kay, Kay, Kay, Kennicutt, Klypin, Kravtsov, Lacey, Lin, Loken, Markevitch, Mazzotta, McCarthy, Mitchell, Molt, Morandi, Muanwong, Navarro, Navarro, O'Hara, Osmond, Pearce, Ponman, Poole, Poole, Poole, Pratt, Quilis, Quilis, Ricker, Sanderson, Springel, Susana Planelles, Sutherland, Theuns, Tornatore, Tozzi, Valdarnini, Vicent Quilis, Vikhlinin, Vikhlinin, Voit, Voit, White, Yepes   +64 more
core   +3 more sources

Constructing a Galaxy Cluster Catalog in IllustrisTNG300 Using the Mulguisin Algorithm [PDF]

The Astrophysical Journal
We present a new simulated galaxy cluster catalog based on the IllustrisTNG simulation. We use the Mulguisin (MGS) algorithm to identify galaxy overdensities.
Lael Shin, Jubee Sohn, Young Ju, Inkyu Park, Cristiano G. Sabiu   +4 more
doaj   +2 more sources

The rotation of Galaxy Clusters [PDF]

Published in Astrofizika, Vol. 58, No. 3, pp. 353-363 (August 2014), 2015
The method for detection of the galaxy cluster rotation based on the study of distribution of member galaxies with velocities lower and higher of the cluster mean velocity over the cluster image is proposed. The search for rotation is made for flat clusters with $a/b>1.8$ and BMI type clusters which are expected to be rotating.
arxiv   +6 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

Probing cosmic isotropy with a new X-ray galaxy cluster sample through the LX–T scaling relation [PDF]

Astronomy & Astrophysics, 2020
The isotropy of the late Universe and consequently of the X-ray galaxy cluster scaling relations is an assumption greatly used in astronomy. However, within the last decade, many studies have reported deviations from isotropy when using various ...
K. Migkas, G. Schellenberger, T. Reiprich, F. Pacaud, M. Ramos-Ceja, L. Lovisari   +5 more
semanticscholar   +1 more source

Spectroscopic confirmation of a mature galaxy cluster at a redshift of 2 [PDF]

Nature, 2020
Galaxy clusters are the most massive virialized structures in the Universe and are formed through the gravitational accretion of matter over cosmic time1. The discovery2 of an evolved galaxy cluster at redshift z = 2, corresponding to a look-back time of
J. Willis, R. Canning, E. Noordeh, S. Allen, A. King, A. Mantz, R. Morris, R. Morris, S. Stanford, G. Brammer   +9 more
semanticscholar   +1 more source

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 Galaxy Cluster Mass Scale and Its Impact on Cosmological Constraints from the Cluster Population [PDF]

Space Science Reviews, 2019
The total mass of a galaxy cluster is one of its most fundamental properties. Together with the redshift, the mass links observation and theory, allowing us to use the cluster population to test models of structure formation and to constrain cosmological
G. Pratt, M. Arnaud, A. Biviano, D. Eckert, S. Ettori, D. Nagai, N. Okabe, T. Reiprich   +7 more
semanticscholar   +1 more source