490 citations · 5.3k across the 87 of their papers we have counts for
5 papers · 1 filter
Searching for Clusters of Galaxies with SUMSS
H. J. Buttery, G. Cotter, R. W. Hunstead +1
Statistical overdensities of radio sources in the NRAO VLA Sky Survey (NVSS) catalogue have proven to be signposts to high-redshift clusters of galaxies. A similar search for overd…
An Empirical Ultraviolet Iron Spectrum Template Applicable to Active Galaxies
M. Vestergaard, B. J. Wilkes
Iron emission is often a severe contaminant in optical-ultraviolet spectra of active galaxies. Its presence complicates emission line studies. A viable solution, already successful…
Deep ROSAT-HRI observation of the elliptical galaxy NGC 1399
M. Paolillo, G. Fabbiano, G. Peres +1
We present the preliminary results of a deep (167 ks) ROSAT HRI observation of the cD galaxy NGC1399 in the Fornax cluster. We find, in agreement with previous observations, an ext…
Clusters of galaxies among ROSAT blank field sources
I. Cagnoni, M. Elvis, D. -W. Kim +3
We present here an efficient method for selecting high luminosity and massive high redshift clusters of galaxies, crucially important tools in cosmology. By selecting bright and ex…
The Chandra High Resolution Spectra of Mkn 421
F. Nicastro, A. Fruscione, M. Elvis +3
Mkn 421 was observed by Chandra twice, on November 5, 1999 as part of the Chandra calibration program, with the ACIS-HETG configuration, and on May 29, 2000 following our Target Of…