Results 21 to 30 of about 135,648 (235)

Clustering of galaxies around radio quasars at 0.5 < z < 0.8 [PDF]

, 1999
We have observed the galaxy environments around a sample of 21 radio-loud, steep-spectrum quasars at 0 ...
Abell, Allington-Smith, Andersen, Antonucci, Barthel, Barthel, Benítez, Best, Biretta, Burstein, Cardelli, Carlberg, Christian, Condon, Croft, Croft, Croom, Davis, de Robertis, Dickinson, Dopita, Downes, Eales, Ellingson, Ellingson, Fanti, Fisher, Forman, Fort, Fukugita, Groth, Guiderdoni, Guzzo, Hall, Hammer, Henry, Hill, Hudon, Hutchings, Jones, Kaiser, Kapahi, Kellerman, Koo, Kormendy, Lacy, Laing, Laing, Lake, Large, Le Fèvre, Lilje, Lilly, Lilly, Lin, Longair, Longair, Loveday, Loveday, Macklin, Magliocchetti, Magorrian, Margrethe Wold, Mark Lacy, Metcalfe, Miller, Morganti, Netzer, Oke, Peacock, Per B. Lilje, Prestage, Prestage, Rawlings, Reid, Riley, Rocca-Volmerange, Roche, Rosati, Rossitter, Schechter, Scheuer, Schmidtke, Schneider, Seldner, Serjeant, Serjeant, Serjeant, Smail, Small, Smith, Smith, Steidel, Stephen Serjeant, Stockton, Taylor, Valdes, Wilkinson, Willott, Willott, Wurtz, Yates, Yee, Yee, Yee, Yee, Zirbel   +106 more
core   +3 more sources

The growth and assembly of a massive galaxy at z ~ 2

, 2009
We study the stellar mass assembly of the Spiderweb Galaxy (MRC 1138-262), a massive z = 2.2 radio galaxy in a protocluster and the probable progenitor of a brightest cluster galaxy.
A. W. Zirm, Benítez, Bertin, Binney, Blakeslee, Boylan-Kolchin, Bruzual, Bruzual, Chabrier, Chandraseker, Coe, Conroy, Conroy, De Lucia, di Matteo, Font, G. K. Miley, Gallagher, Guo, H. J. A. Röttgering, Hatch, Ivison, J. D. Kurk, Kodama, Kriek, Kurk, Malumuth, Maraston, Mihos, Miley, Miley, N. A. Hatch, Nesvadba, Overzier, Papovich, Pentericci, Pentericci, R. A. Overzier, Reddy, Salim, Saro, Saro, Sawicki, Schlegel, Seymour, Shapley, Spergel, Stevens, Venemans, Villar-Martin, Villar-Martín, Zirm, Zirm   +52 more
core   +1 more source

PKS2250-41: a case study for triggering

, 2008
We present the results of a multiwavelength study of the z = 0.31 radio source PKS2250-41. Integral field unit and long-slit spectroscopy obtained using VIMOS and FORS1 on the VLT, and archival HST optical imaging observations are used to study the ...
Appenzeller I., Best P. N., Binette L., Bremer M. N., C. N. Tadhunter, Clark N. E., D. Dicken, Danziger I. J., Dickson R., Howarth I. D., J. Holt, K. J. Inskip, M. Villar-Martín, Moorwood A., Morganti R., R. Morganti, Shaw M., Tadhunter C., Tadhunter C. N.   +18 more
core   +1 more source

Subarcsecond-resolution Imaging of M51 with the International LOFAR Telescope

The Astrophysical Journal, 2023
We present an International LOFAR Telescope (ILT) subarcsecond-resolution image of the nearby galaxy M51 with a beam size of 0.″436 × 0.″366 and rms of 46 μ Jy. We compare this image with a European VLBI Network study of M51 and discuss the supernovae in
Deepika Venkattu, Peter Lundqvist, Miguel Pérez Torres, Leah Morabito, Javier Moldón, John Conway, Poonam Chandra, Cyril Tasse   +7 more
doaj   +1 more source

MRC B0319-454: Probing the large-scale structure with a giant radio galaxy

, 2008
We present an investigation of the relationships between the radio properties of a giant radio galaxy MRC B0319-454 and the surrounding galaxy distribution with the aim of examining the influence of intergalactic gas and gravity associated with the large-
Begelman, Bliton, Blundell, Boehringer, Bregman, Bryant, Brüggen, Bîrzan, Cen, Cen, Churazov, Davé, Douglass, Fleenor, Fleenor, G. V. Bicknell, Gull, Hardcastle, Hardcastle, Haslam, Haverkorn, Huchra, Ishwara-Chandra, Jamrozy, Jamrozy, Jones, Jones, Jones, Kaiser, Kaiser, Klamer, Kraft, L. Saripalli, Lara, Ledlow, Lewis, McNamara, Mills, Mulchaey, Nulsen, R. Subrahmanyan, Safouris, Saripalli, Schatzmann, Scheuer, Simard-Normandin, Slee, Subrahmanyan, V. Safouris, Worrall, Worrall, Wright   +51 more
core   +1 more source

The Radio Luminosity Function of Cluster Radio Halos [PDF]

, 2002
A significant fraction of galaxy clusters exhibits cluster wide radio halos. We give a simple prediction of the local and higher redshift radio halo luminosity function (RHLF) on the basis of (i) an observed and a theoretical X-ray cluster luminosity ...
Ensslin, Torsten A., Roettgering, Huub
core   +3 more sources

ИССЛЕДОВАНИЕ УГЛОВОЙ СТРУКТУРЫ РАДИОГАЛАКТИКИ 3С265 НА ДЕКАМЕТРОВЫХ ВОЛНАХ

Odessa Astronomical Publications, 2011
The results of study of the radio galaxy 3C265 at decameter wavelengths are presented. As the high frequency map of the radio source the decameter model of its angular structure contains two extended lobes and three compact hot spots. Its coordinates are
Р. В. Ващишин, А. И. Браженко, В. А. Шепелев, С. Л. Рашковский, Г. А. Инютин, В. В. Кошевой, А. Б. Лозинский, О. А. Литвиненко, В. Г. Деревягин   +8 more
doaj   +1 more source

An Extended Lyα Outflow from a Radio Galaxy at z = 3.7?

The Astrophysical Journal Letters, 2023
Spatially resolved observations of active galactic nuclei (AGN) host galaxies undergoing feedback processes are one of the most relevant avenues through which galactic evolution can be studied, given the long-lasting effects AGN feedback has on gas ...
Miguel Coloma Puga, Barbara Balmaverde, Alessandro Capetti, Francesco Massaro, Cristina Ramos Almeida, George Miley, Roberto Gilli, Alessandro Marconi   +7 more
doaj   +1 more source

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

A Comprehensive Observational Study of the FRB 121102 Persistent Radio Source

The Astrophysical Journal, 2023
FRB 121102 is the first fast radio burst to be spatially associated with a persistent radio source (QRS 121102), the nature of which remains unknown. We constrain the physical size of QRS 121102 by measuring its flux-density variability with the VLA from
Ge Chen, Vikram Ravi, Gregg W. Hallinan
doaj   +1 more source