Results 41 to 50 of about 86,475 (349)

Galaxy Cluster Environments of Radio Sources

, 2011
Using the Sloan Digital Sky Survey (SDSS) and the FIRST (Faint Images of the Radio Sky at Twenty Centimeters) catalogs, we examined the optical environments around double-lobed radio sources. Previous studies have shown that multi-component radio sources
Abazajian, Ascasibar, Bahcall, Blanc, Blanton, Blanton, Blanton, Blanton, Blanton, Blanton, Bower, Bradač, Brodwin, Budavári, Burns, Clarke, Condon, Croft, Csabai, Daddi, Dalton, Deltorn, Dickinson, D’Onghia, Elizabeth L. Blanton, Fanaroff, Gal, Garilli, Gladders, Gladders, Gladders, Gómez, Ivezić, Jee, Joshua D. Wing, Koester, Koester, Krick, Lin, Lin, Lin, Lumsden, Martini, McMahon, Menanteau, Miller, Oklopčić, Ostrander, Owen, Oyaizu, Proctor, Reiprich, Roettiger, Sarazin, Schlegel, Smith, Smolčić, Vanderlinde, Vikhlinin, Voges, Wen, York, Zirbel, Zwicky   +63 more
core   +1 more source

Tailed radio galaxies as tracers of galaxy clusters. Serendipitous discoveries with the GMRT [PDF]

, 2009
We report on the discovery of four new radio galaxies with tailed morphology. Tailed radio galaxies are generally found in rich environments, therefore their presence can be used as tracer of a cluster.
Giacintucci, S., Venturi, T.
core   +1 more source

Measuring Galaxy Environments with Deep Redshift Surveys

, 2005
We study the applicability of several galaxy environment measures (n^th-nearest-neighbor distance, counts in an aperture, and Voronoi volume) within deep redshift surveys.
Brian F. Gerke, Darren S. Madgwick, Jeffrey A. Newman, Kauffmann G., Marc Davis, Michael C. Cooper, Renbin Yan   +6 more
core   +1 more source

The Properties of Radio Galaxies and the Effect of Environment in Large Scale Structures at $z\sim1$ [PDF]

, 2017
In this study we investigate 89 radio galaxies that are spectroscopically-confirmed to be members of five large scale structures in the redshift range of $0.65 \le z \le 0.96$. Based on a two-stage classification scheme, the radio galaxies are classified
Becker, Robert H., Fassnacht, Christopher D., Gal, Roy R., Lemaux, Brian C., Lubin, Lori M., Miller, Neal A., Rumbaugh, Nicholas, Shen, Lu, Squires, Gordon, Tomczak, Adam R., Wu, Po-Feng.   +10 more
core   +3 more sources

The Environments of Markarian Galaxies [PDF]

International Astronomical Union Colloquium, 1990
The extensively studied Markarian sample of 1500 ultraviolet excess galaxies contains many Seyfert, starburst, and peculiar galaxies. Using the 20 minute V plates obtained for the construction of the Hubble Space Telescope Guide Star Catalog, we have investigated the morphologies of the Markarian galaxies and the environments in which they are located.
John W. MacKenty, Brian McLean, Caroline Simpson   +2 more
openaire   +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

Merger relics of cluster galaxies [PDF]

, 2013
Context. Sheen and collaborators recently found that a surprisingly large portion (38%) of massive early-type galaxies in heavy clusters show strong merger-related disturbed features.
Ji, Inchan, Jung, Intae, Lee, Jaehyun, Sheen, Yun-Kyeong, Yi, Sukyoung K.   +4 more
core   +1 more source

The local environment of H II galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2000
We address the question of whether violent star formation in HII galaxies is induced by low mass companions by describing statistically their local environment as estimated by the correlation function. We argue that even if low mass companions were mainly intergalactic HI clouds, their optical counterparts should be detectable at faint limits of the ...
Telles, Eduardo, Maddox, Steve
openaire   +3 more sources

Nature versus Nurture: Revisiting the Environmental Impact on Star Formation Activities of Galaxies

The Astrophysical Journal
We present a systematic study of the environmental impact on star formation activities of galaxies using a mass-complete sample of ∼170k galaxies at z < 4 from the latest COSMOS2020 catalog.
Ke Shi, Nicola Malavasi, Jun Toshikawa, Xianzhong Zheng   +3 more
doaj   +1 more source

VERTICO and IllustrisTNG: The Spatially Resolved Effects of Environment on Galactic Gas

The Astrophysical Journal Letters, 2023
It has been shown in previous publications that the TNG100 simulation quantitatively reproduces the observed reduction in each of the total atomic and total molecular hydrogen gas for galaxies within massive halos, i.e., dense environments.
Adam R. H. Stevens, Toby Brown, Benedikt Diemer, Annalisa Pillepich, Lars Hernquist, Dylan Nelson, Yannick M. Bahé, Alessandro Boselli, Timothy A. Davis, Pascal J. Elahi, Sara L. Ellison, María J. Jiménez-Donaire, Ian D. Roberts, Kristine Spekkens, Vicente Villanueva, Adam B. Watts, Christine D. Wilson, Nikki Zabel   +17 more
doaj   +1 more source