Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Ledlow, Michael"'
We present new Hubble, Gemini-S, and Chandra observations of the radio galaxy 0313-192, which hosts a 350-kpc double source and jets, even though previous data have suggested that it is a spiral galaxy. We measure the bulge scale and luminosity, radi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0608086
Autor:
Voss, Hauke, Bertoldi, Frank, Carilli, Chris, Owen, Frazer N., Lutz, Dieter, Holdaway, Mark, Ledlow, Michael, Menten, Karl M.
Our MAMBO 1.2 mm blank field imaging survey of ~0.75 sqd has uncovered four unusually bright sources, with flux densities between 10 and 90 mJy, all located in the Abell 2125 field. The three brightest are flat spectrum radio sources with bright opti
Externí odkaz:
http://arxiv.org/abs/astro-ph/0511117
Autor:
Miller, Neal A., Owen, Frazer N., Hill, John M., Keel, William C., Ledlow, Michael J., Oegerle, William R.
Publikováno v:
Astrophys.J. 613 (2004) 841-850
We present 371 galaxy velocities in the field of the very rich cluster Abell 2125 (z~0.25). These were determined using optical spectroscopy collected over several years from both the WIYN 3.5m telescope and NOAO Mayall 4m telescope. Prior studies at
Externí odkaz:
http://arxiv.org/abs/astro-ph/0406292
Publikováno v:
Astrophys.J. 611 (2004) 821-834
We present an 82 ksec Chandra ACIS-I observation of a large-scale hierarchical complex, which consists of various clusters/groups of galaxies and low-surface brightness X-ray emission at z = 0.247. This high-resolution {\sl Chandra} observation allow
Externí odkaz:
http://arxiv.org/abs/astro-ph/0404602
The structure of the universe is believed to have formed by clustering hierarchically from small to large scales. Much of this evolution occurs very slowly but at a few special times more, rapid, violent activity may occur as major subunits collide a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0404313
We present an analysis of the X-ray emission for a complete sample of 288 Abell clusters spanning the redshift range 0.016<= z <= 0.09 from the ROSAT All-Sky Survey. This sample is based on our 20cm VLA survey of nearby Abell clusters. We find an X-r
Externí odkaz:
http://arxiv.org/abs/astro-ph/0310175
Multifiber optical spectroscopy has been performed on galaxies in the vicinity of strong, nearby radio galaxies. These radio galaxies were selected from the 3CR and B2 catalogs based on their exclusion from the Abell catalog, which is puzzling given
Externí odkaz:
http://arxiv.org/abs/astro-ph/0203281
We have identified a large (~200 kpc), powerful double radio source whose host galaxy is clearly a disk and most likely a spiral. This FR I radio galaxy is located very near the center of the RC 0 cluster Abell 428. The existence of such an object vi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0012328
We present new redshifts and positions for 635 galaxies in nine rich clusters containing Wide-Angle Tailed (WAT) radio galaxies. Combined with existing data, we now have a sample of 18 WAT-containing clusters with more than 10 redshifts. This sample
Externí odkaz:
http://arxiv.org/abs/astro-ph/0011168
In this letter, we present a new determination of the local (z<0.09) X-ray luminosity function (XLF) using a large, statistical sample of 294 Abell clusters and the ROSAT All-Sky-Survey. Given our large sample size, we have reduced errors by a factor
Externí odkaz:
http://arxiv.org/abs/astro-ph/9903117