Results 101 to 110 of about 12,793,373 (294)

Probing Hot Gas in Galaxy Groups through the Sunyaev-Zeldovich Effect

, 2011
We investigate the potential of exploiting the Sunyaev-Zeldovich effect (SZE) to study the properties of hot gas in galaxy groups. It is shown that, with upcoming SZE surveys, one can stack SZE maps around galaxy groups of similar halo masses selected ...
Adelman-McCarthy, Aghanim, Arnaud, Ascasibar, Bartelmann, Berlind, Birkinshaw, Birkinshaw, Borgani, Bryan, Bullock, Böhringer, Cacciato, Colless, Comerford, Cooray, Dolag, Eke, Evrard, Finoguenov, Frank C. van den Bosch, Frenk, Goto, Grego, Guzik, Górski, H. J. Mo, Hall, Hallman, Hernández-Monteagudo, Hernández-Monteagudo, Holder, Jing, Jing, Koester, Komatsu, Komatsu, LaRoque, Lewis, Li, Limber, Lloyd-Davies, Lueker, Macciò, Mandelbaum, Mather, Milkeraitis, Miller, Mo, Moodley, More, More, Muchovej, Myers, Navarro, Nord, Oguri, Ostriker, Plagge, Ponman, Press, Ran Li, Rasia, Sealfon, Shaw, Sheth, Spergel, Staniszewski, Sunyaev, Thomas, Turner, Umetsu, van den, van den, van den, Vikhlinin, Voit, White, Xiaohu Yang, Yang, Yang, Yang, Yang, Yang, Yang, York, Yoshikawa, Zhao, Zhao, Zuhui Fan   +89 more
core   +1 more source

X-ray bright groups and their galaxies [PDF]

, 2002
Combining X-ray data from the ROSAT PSPC and optical data drawn from the literature, we examine in detail the relationship between the X-ray and optical properties of X-ray bright galaxy groups. We find a relationship between optical luminosity and X-ray
Helsdon, Stephen F., Ponman, Trevor J.
core   +3 more sources

The Orientation of Galaxies in Nearby Galaxy Groups [PDF]

Symposium - International Astronomical Union, 2004
The statistical analysis of six nearby groups of galaxies, connected with the Milky Way, M31, M81, M101, NGC5128 and NGC5236 shows an isotropic distribution of galaxy planes, similarly to galaxies within the Local Group. Also planes of galaxies in the nearby (Vr < 500 km s−1) region of the Local Supercluster exhibit random distribution, disregarding
Piotr Flin, M. Biernacka, J. Krywult
openaire   +2 more sources

The GEEC2 spectroscopic survey of Galaxy groups at 0.8 < z < 1 [PDF]

, 2014
We present the data release of the Gemini-South GMOS spectroscopy in the fields of 11 galaxy groups at $0.8 50$ per cent complete for galaxies within the virial radius, and with stellar mass $M_{\rm star}>10^{10.3}M_\odot$.
M. Balogh, S. McGee, A. Mok, D. Wilman, A. Finoguenov, R. Bower, J. Mulchaey, L. Parker, Masayuki Tanaka Waterloo, Leiden, McMaster, Mpie, Helsinki, Durham, Ociw, Naoj   +15 more
semanticscholar   +1 more source

The Padova-Millennium Galaxy and Group Catalogue (PM2GC): the group-finding method and the PM2GC catalogues of group, binary and single field galaxies

, 2011
We present the construction and describe the properties of the Padova-Millennium Galaxy and Group Catalogue (PM2GC), a galaxy catalogue representative of the general field population in the local Universe.
Balogh, Balogh, Balogh, Barnes, Beers, Bell, Benedetta Vulcani, Berlind, Berrier, Bertin, Bianca M. Poggianti, Blanton, Butcher, Byrd, Carlberg, Cimatti, Cox, Cross, Dressler, Dressler, Driver, Eke, Fasano, Finn, Font, Fritz, Fritz, Geller, Gerke, Gunn, Guo, Halliday, Hashimoto, Henry, Hickson, Huchra, Irwin, Kang, Kroupa, Lewis, Liske, Marinoni, Martínez, McGee, Mihos, Miller, Milvang-Jensen, Moore, Moore, Mulchaey, Murante, Poggianti, Poggianti, Poggianti, Ramella, Ramella, Ramella, Rosa Calvi, Salpeter, Somerville, Springel, Toomre, Tucker, Vulcani, Wang, Weinmann, White, Wilman, Yang, Zabludoff   +69 more
core   +1 more source

A ROSAT survey of Hickson's compact galaxy groups [PDF]

, 1996
We report the results of an almost complete survey of the X-ray properties of Hickson's compact galaxy groups with the ROSAT PSPC. Diffuse X-ray emission is detected from 22 groups.
Bohringer, H., Bourner, P. D., Ebeling, H., Ponman, T. J.   +3 more
core   +3 more sources

The 2dF Galaxy Redshift Survey: the clustering of galaxy groups [PDF]

Monthly Notices of the Royal Astronomical Society, 2004
16 pages.
Terry J. Bridges, Peder Norberg, Chris A. Collins, Richard S. Ellis, Matthew Colless, Joss Bland-Hawthorn, Russell D. Cannon, Darren Madgwick, George Efstathiou, Ivan K. Baldry, Simon P. Driver, Carlos S. Frenk, Nelson D. Padilla, Gavin Dalton, Gavin Dalton, Warrick J. Couch, Stephen J. Maddox, Darren J. Croton, Keith Taylor, Vincent R. Eke, Roberto De Propris, Ian Lewis, Carlton M. Baugh, Carole Jackson, Stuart Lumsden, Ofer Lahav, William J. Sutherland, William J. Sutherland, Karl Glazebrook, Bruce A. Peterson, Shaun Cole, John A. Peacock   +31 more
openaire   +8 more sources

Ultimate age-dating method for galaxy groups; clues from the Millennium Simulations [PDF]

, 2014
There have been a number of studies dedicated to identification of fossil galaxy groups, arguably groups with a relatively old formation epoch. Most of such studies identify fossil groups, primarily based on a large luminosity gap, which is the magnitude
Mojtaba Raouf, H. Khosroshahi, T. Ponman, A. Dariush, A. Molaeinezhad, S. Tavasoli   +5 more
semanticscholar   +1 more source

Mining the gap: evolution of the magnitude gap in X-ray galaxy groups from the 3-square-degree XMM coverage of CFHTLS [PDF]

, 2014
We present a catalog of 129 X-ray galaxy groups, covering a redshift range 0.04 \textless z \textless 1.23, selected in the similar to 3 deg(2) part of the CFHTLS W1 field overlapping XMM observations performed under the XMM-LSS project.
G. Gozaliasl, G. Gozaliasl, G. Gozaliasl, A. Finoguenov, H. Khosroshahi, M. Mirkazemi, M. Salvato, D. Jassur, G. Erfanianfar, P. Popesso, Masayuki Tanaka, M. Lerchster, J. Kneib, H. McCracken, Y. Mellier, E. Egami, M. Pereira, F. Brimioulle, T. Erben, Stella Seitz   +19 more
semanticscholar   +1 more source

IGM heating in fossil galaxy groups [PDF]

Monthly notices of the Royal Astronomical Society, 2014
We study intergalactic medium (IGM) heating in a sample of five fossil galaxy groups by using their radio properties at 610 MHz and 1.4 GHz. The power by radio jets introducing mechanical heating for the sampled objects is not sufficient enough to ...
H. Miraghaei, H. Khosroshahi, H. Klockner, T. Ponman, N. Jetha, Somak Raychaudhury   +5 more
semanticscholar   +1 more source