Internal dynamics of Abell 1240: a galaxy cluster with symmetric double radio relics (2009)
Barrena, R., Girardi, M., Boschin, W., Dasi, M.
We aim to obtain new insights into the internal dynamics of the cluster Abell 1240, showing the presence of two roughly symmetric radio relics, separated by ~2 h_70^-1 Mpc. Our analysis is mainly...
M. Ramella, W. Boschin, D. Fadda, M. Nonino
Abstract. We present an objective and automated procedure for detecting clusters of galaxies in imaging galaxy surveys ⋆. Our Voronoi Galaxy Cluster Finder (VGCF) uses galaxy positions and...
Internal dynamics of the galaxy cluster Abell 959 (2009)
Boschin, W., Barrena, R., Girardi, M.
The connection of cluster mergers with the presence of extended, diffuse radio sources in galaxy clusters is still being debated. In this paper we aim to obtain new insights into the internal...
W. Boschin, M. Girardi, M. Spolaor, R. Barrena
Aims. We present a detailed dynamical analysis of the rich galaxy cluster A2744, containing a powerful diffuse radio halo. Methods. Our analysis is based on redshift data for 102 galaxies, part of...
Girardi, M., Barrena, R., Boschin, W., Ellingson, E.
The connection of cluster mergers with the presence of extended, diffuse radio sources in galaxy clusters is still debated. An interesting case is the rich, merging cluster Abell 520, containing a...
Boschin, W., Barrena, R., Girardi, M., Spolaor, M.
We study the dynamical status of the poor, low X-ray luminous galaxy clusters Abell 610, Abell 725, and Abell 796 (at z=0.1, 0.09, and 0.16, respectively), containing diffuse radio sources (relic,...
The dynamical status of the galaxy cluster Abell 115 (2007)
Barrena, R., Boschin, W., Girardi, M., Spolaor, M.
We present the results of a new spectroscopic and photometric survey of the hot, binary X-ray cluster A115 at z=0.193, containing a radio relic. We combine galaxy velocity and position information to...
Internal dynamics of the radio halo cluster Abell 773: a multiwavelength analysis (2007)
Barrena, R., Boschin, W., Girardi, M., Spolaor, M.
We conduct an intensive study of the rich, X-ray luminous galaxy cluster A773 at z=0.22 containing a diffuse radio halo to determine its dynamical status. Our analysis is based on new spectroscopic...
Internal dynamics of the radio halo cluster Abell 773 : a multiwavelength analysis (2007)
Barrena Delgado, Rafael, Boschin, W., Girardi, Marisa, Spolaor, M.
Abstract not available.
Internal dynamics of the radio halo cluster Abell 773 : a multiwavelength analysis (2007)
Barrena Delgado, Rafael, Boschin, W., Girardi, Marisa, Spolaor, M.
Abstract not available.
Internal dynamics of the radio halo cluster Abell 773 : a multiwavelength analysis (2007)
Barrena Delgado, Rafael, Boschin, W., Girardi, Marisa, Spolaor, M.
Abstract not available.
Internal dynamics of the radio halo cluster Abell 773 : a multiwavelength analysis (2007)
Barrena Delgado, Rafael, Boschin, W., Girardi, Marisa, Spolaor, M.
Abstract not available.
Internal dynamics of the radio halo cluster Abell 773 : a multiwavelength analysis (2007)
Barrena Delgado, Rafael, Boschin, W., Girardi, Marisa, Spolaor, M.
Abstract not available.
Internal dynamics of the massive cluster Abell 697: a multiwavelength analysis (2006)
Girardi, M., Boschin, W., Barrena, R.
We conduct an intensive study of the rich, X-ray luminous, and hot galaxy cluster Abell 697 (at z=0.282), likely containing a diffuse radio emission, to determine its dynamical status. Our analysis...
TNG publications 1989-2005 (2006)
This document lists a set of (refereed and unrefereed) scientific publications based on data taken with the instruments of the Italian Telescopio Nazionale Galileo (TNG, mainly from the year 2000...
Internal dynamics of the radio-halo cluster A2744 (2006)
Boschin, W., Girardi, M., Spolaor, M., Barrena, R.
We present a detailed dynamical analysis of the rich galaxy cluster A2744, containing a powerful diffuse radio halo.Our analysis is based on redshift data for 102 galaxies, part of them recovered...
VGCF Detection of Galaxy Systems at Intermediate Redshift (2005)
Barrena, R., Ramella, M., Boschin, W., Nonino, M., Biviano, A., Mediavilla, E.
We continue the development of our Voronoi Galaxy Cluster Finder (VGCF) technique by applying it to galaxy catalogs obtained with B and R band observations of four high galactic latitude fields of...
K-band Properties of Well-Sampled Groups of Galaxies (2004)
Ramella, M., Boschin, W., Geller, M. J., Mahdavi, A., Rines, K.
We use a sample of 55 groups and 6 clusters of galaxies ranging in mass from 7 x 10^11 Msun to 1.5 x 10^15 Msun to examine the correlation of the Ks-band luminosity with mass discovered by Lin et al....
Internal dynamics of the radio--halo cluster A2219: a multi-wavelength analysis (2003)
Boschin, W., Girardi, M., Delgado, R. Barrena, Biviano, A., Feretti, L., Ramella, M.
We present the results of the dynamical analysis of the rich, hot, and X-ray very luminous galaxy cluster A2219, containing a powerful diffuse radio-halo. Our analysis is based on new redshift data...
A deep cluster survey in Chandra archival data. First results (2003)
I present the first results of a search for clusters of galaxies in Chandra ACIS pointed observations at high galactic latitude with exposure times larger than 10 ks. The survey is being carried out...
Structure and Evolution of Galaxy Clusters: Internal Dynamics of ABCG 209 at z~0.21 (2002)
Mercurio, A., Girardi, M., Boschin, W., Merluzzi, P., Busarello, G.
We study the internal dynamics of the rich galaxy cluster ABGC 209 on the basis of new spectroscopic and photometric data. The distribution in redshift shows that ABCG 209 is a well isolated peak of...
Finding Galaxy Clusters using Voronoi Tessellations (2001)
Ramella, M., Boschin, W., Fadda, D., Nonino, M.
We present an objective and automated procedure for detecting clusters of galaxies in imaging galaxy surveys. Our Voronoi Galaxy Cluster Finder (VGCF) uses galaxy positions and magnitudes to find...
Optical/Infrared Survey of Galaxy Clusters (2000)
Da Costa, Luiz, Arnouts, S., Bardelli, S., Benoist, C., Biviano, A., Borgani, S., ...
In this contribution the ongoing effort to build a statistical sample of clusters of galaxies over a wide range of redshifts to study the evolution of clusters and member galaxies is reviewed. The...
Spectroscopic confirmation of clusters from the ESO imaging survey (2000)
Ramella, M., Biviano, A., Boschin, W., Bardelli, S., Scodeggio, M., Borgani, S., ...
We measure redshifts for 67 galaxies in the field of six cluster candidates from the ESO Imaging Survey (EIS). The cluster candidates are selected in the EIS patches C and D among those with...
Girardi, M., Boschin, W., Da Costa, L.
We measure the two-point redshift-space correlation function of loose groups of galaxies, xi_GG, for the combined CfA2 and SSRS2 surveys. Our combined group catalog constitutes the largest...
Confirming EIS Clusters. Multi-object Spectroscopy (1999)
Biviano, A., Ramella, M., Boschin, W., Bardelli, S., Scodeggio, M., Da Costa, L. N., ...
Using EFOSC2 at the 3.6m ESO telescope, we obtained redshifts for 68 galaxies in the field of six cluster candidates from the ESO Imaging Survey (EIS). The cluster candidates were selected in the EIS...
Confirming EIS Clusters. Optical and Infrared Imaging (1999)
Olsen, L. F., Jorgensen, H. E., Scodeggio, M., Da Costa, L., Rengelink, R., Nonino, M., ...
Clusters of galaxies are important targets in observationally cosmology, as they can be used both to study the evolution of the galaxies themselves and to constrain cosmological parameters. Here we...
Cluster identification via Voronoi tessellation (1998)
Ramella, M., Nonino, M., Boschin, W., Fadda, D.
We propose an automated method for detecting galaxy clusters in imaging surveys based on the Voronoi tessellation technique. It appears very promising, expecially for its capability of detecting...
Optical Mass Estimates of Galaxy Clusters (1998)
Girardi, M., Giuricin, G., Mardirossian, F., Mezzetti, M., Boschin, W.
We evaluate in a homogeneous way the optical masses of 170 nearby clusters (z< 0.15). The sample includes both data from the literature and the new ENACS data (Katgert et al. 1996, 1998). On the...