79 citations · 314 across the 7 of their papers we have counts for
7 papers
On The Nature of Fossil Galaxy Groups
F. La Barbera, R. R. de Carvalho, I. G. de la Rosa +3
We present a new sample of 25 fossil groups (FGs) at z < 0.1, along with a control sample of seventeen bright ellipticals located in non-fossil systems. Both the global properties…
NoSOCS in SDSS. II. Mass Calibration of Low Redshift Galaxy Clusters with Optical and X-ray Properties
P. A. A. Lopes, R. R. de Carvalho, J. L. Kohl-Moreira +1
We use SDSS data to investigate the scaling relations of 127 NoSOCS and 56 CIRS galaxy clusters at low redshift (). We show that richness and both optical and X-ray lum…
The Northern Sky Optical Cluster Survey III: A Cluster Catalog Covering Pi Steradians
R. R. Gal, P. A. A. Lopes, R. R. de Carvalho +3
We present the complete galaxy cluster catalog from the Northern Sky Optical Cluster Survey, a new, objectively defined catalog of candidate galaxy clusters at z<0.25 drawn from th…
On the Nature of Fossil Galaxy Groups: Are they really fossils ?
F. La Barbera, R. R. de Carvalho, I. G. de la Rosa +3
We use SDSS-DR4 photometric and spectroscopic data out to redshift z~0.1 combined with ROSAT All Sky Survey X-ray data to produce a sample of twenty-five fossil groups (FGs), defin…
NoSOCS in SDSS. I. Sample Definition and Comparison of Mass Estimates
P. A. A. Lopes, R. R. de Carvalho, J. L. Kohl-Moreira +1
We use Sloan Digital Sky Survey (SDSS) data to investigate galaxy cluster properties of systems first detected within DPOSS. With the high quality photometry of SDSS we derived new…
2DPHOT: A Multi-purpose Environment for the Two-dimensional Analysis of Wide-field Images
F. La Barbera, R. R. de Carvalho, J. L. Kohl-Moreira +5
We describe 2DPHOT, a general purpose analysis environment for source detection and analysis in deep wide-field images. 2DPHOT is an automated tool to obtain both integrated and su…