Results 21 to 30 of about 142,796 (289)

ALIGNMENTS OF GROUP GALAXIES WITH NEIGHBORING GROUPS [PDF]

The Astrophysical Journal, 2009
13 pages, 16 figures, accepted by ...
Wang, Yougang, Park, Changbom, Yang, Xiaohu, Choi, Yun-Young, Chen, Xuelei   +4 more
openaire   +2 more sources

Somewhere in between: Tracing the Radio Emission from Galaxy Groups (or Why Does the Future of Observing Galaxy Groups with Radio Telescopes Look Promising?)

Galaxies, 2021
Galaxy groups constitute the most common class of galaxy systems in the known Universe, unique in terms of environmental properties. However, despite recent advances in optical and infrared observations as well as in theoretical research, little is known
Błażej Nikiel-Wroczyński
doaj   +1 more source

Galaxy Groups at Intermediate Redshift [PDF]

The Astrophysical Journal, 2001
Galaxy groups likely to be virialized are identified within the CNOC2 intermediate redshift galaxy survey using an iterative method. The number-velocity dispersion relation is in agreement with the low-mass extrapolation of the cluster normalized Press-Schechter function.
Carlberg, R. G., Yee, H. K. C., Morris, S. L., Lin, H., Hall,, P. B., Patton, D. R., Sawicki, M., Shepherd, C. W.   +7 more
openaire   +3 more sources

Radio galaxy feedback in X-ray selected groups from COSMOS: the effect on the ICM [PDF]

, 2010
We quantify the importance of the mechanical energy released by radio-galaxies inside galaxy groups. We use scaling relations to estimate the mechanical energy released by 16 radio-AGN located inside X-ray detected galaxy groups in the COSMOS field.
A. Finoguenov, A. M. Koekemoer, A. Oklopčić, Bîrzan, Bîrzan, Condon, D. B. Sanders, D. Pierini, D. Thompson, De Young, Donahue, Drory, Dunkley, E. Schinnerer, Finoguenov, G. W. Pratt, G. Zamorani, Giodini, Gitti, H. Boehringer, Heinz, Ilbert, J. S. Kartaltepe, L. Bîrzan, Leauthaud, Lin, M. Salvato, Markevitch, Peterson, Pratt, Puchwein, R. Massey, Reiprich, S. Giodini, Salvato, Schinnerer, Scoville, Short, Skrutskie, Smolčić, Smolčić, Sun, V. Smolčić, Voit, Wright   +44 more
core   +4 more sources

Feedback from Active Galactic Nuclei in Galaxy Groups

Universe, 2021
The co-evolution between supermassive black holes and their environment is most directly traced by the hot atmospheres of dark matter halos. The cooling of the hot atmosphere supplies the central regions with fresh gas, igniting active galactic nuclei ...
Dominique Eckert, Massimo Gaspari, Fabio Gastaldello, Amandine M. C. Le Brun, Ewan O’Sullivan   +4 more
doaj   +1 more source

Galaxy interactions II: High density environments [PDF]

, 2011
With the aim to assess the role of dense environments in galaxy interactions, properties we present an analysis of close galaxy pairs in groups and clusters, obtained from the Sloan Digital Sky Survey Data Release 7 (SDSS-DR7).
Abazajian, Abazajian, Alonso, Alonso, Alonso, Baldry, Baldry, Balogh, Balogh, Balogh, Barton, Berlind, Blanton, Brinchmann, Ceccarelli, Colless, Cooper, Cooper, Coziol, D. G. Lambas, Darg, De Lucia, Dressler, Ellison, González, González, Gunn, Heiderman, Hopkins, Hopkins, Huchra, Kauffmann, Kennicutt, Lacerna, Lambas, Lambas, Lin, Mamon, Mamon, McIntosh, Merchán, Michel-Dansac, Morgan, N. Padilla, Padilla, Padilla, Padilla, Park, Patton, Pérez, Robaina, S. Alonso, Simard, Skibba, Skibba, Strauss, V. Mesa, von der Linden, Wang, Wong, Yang, York, Zapata, Zibetti, Zwicky   +64 more
core   +1 more source

Baryonically Closed Galaxy Groups [PDF]

, 2005
Elliptical galaxies and their groups having the largest L_x/L_B lie close to the locus in the L_x,L_B diagram expected for closed systems with baryon fractions equal to the cosmic mean value, f_b = 0.16.
Andreas Faltenbacher, David A. Buote, Fabrizio Brighenti, Grevesse N., Kaiser N., Kawaharada M., Nagashima M., William G. Mathews   +7 more
core   +2 more sources

The DEEP2 Galaxy Redshift Survey: The Voronoi-Delaunay Method Catalog of Galaxy Groups [PDF]

, 2012
We present a public catalog of galaxy groups constructed from the spectroscopic sample of galaxies in the fourth data release from the Deep Extragalactic Evolutionary Probe 2 (DEEP2) Galaxy Redshift Survey, including the Extended Groth Strip (EGS).
Aaron A. Dutton, Alison L. Coil, Andrew C. Phillips, Benjamin J. Weiner, Berlind, Brian F. Gerke, Christopher N. A. Willmer, Coil, Coil, Coil, Coil, Conroy, David C. Koo, David J. Rosario, Davis, Davis, Evrard, Faber, Fang, Gerke, Gladders, Hao, Jeffrey A. Newman, Kai Noeske, Kenney, Klypin, Knobel, Koester, Li, Lihwai Lin, Lilly, Liu, Ma, Marc Davis, Marinoni, Michael C. Cooper, Miller, Newman, Newman, Nicholas Konidaris, Nolthenius, Puragra Guhathakurta, Renbin Yan, S. M. Faber, Soares-Santos, Tinker, Willmer, Yan, Zheng, Zheng   +49 more
core   +3 more sources

Searches for ultracompact dwarf galaxies in galaxy groups [PDF]

Monthly Notices of the Royal Astronomical Society, 2007
8 pages, 2 figures, accepted for publication in ...
Evstigneeva, E. A., Drinkwater, M. J., Jurek, R., Firth, P., Jones, J. B., Gregg, M. D., Phillipps, S.   +6 more
openaire   +3 more sources

Filaments of galaxies and Voronoi diagrams

Open Astronomy, 2018
The intersections between a spherical shell and the faces of Voronoi polyhedrons are numerically evaluated. The nodes of these intersections are the points that share the same distances from three nuclei.
Zaninetti Lorenzo
doaj   +1 more source