Publications (18)
Two-component, ideal, self-gravitating fluids: the fractional virial potential energy
R. Caimmi, T. Valentinuzzi
Two-component, ideal, self-gravitating fluids are conceived as macrogases, and the related equation of state is expressed using the virial theorem for subsystems, under the restric…
WINGS: A WIde-field Nearby Galaxy-cluster Survey. II. Deep optical photometry of 77 nearby clusters
J. Varela, M. D'Onofrio, C. Marmo +10
(Abridged) Context. This is the second paper of a series devoted to the WIde Field Nearby Galaxy-cluster Survey (WINGS). WINGS is a long term project which is gathering wide-field,…
WINGS Data Release: a database of galaxies in nearby clusters
A. Moretti, B. M. Poggianti, G. Fasano +15
[Abridged] To effectively investigate galaxy formation and evolution, it is of paramount importance to exploit homogeneous data for large samples of galaxies in different environme…
WINGS-SPE II: A catalog of stellar ages and star formation histories, stellar masses and dust extinction values for local clusters galaxies
J. Fritz, B. M. Poggianti, A. Cava +12
The WIde-field Nearby Galaxy clusters Survey (WINGS) is a project whose primary goal is to study the galaxy populations in clusters in the local universe (z<0.07) and of the influe…
Morphology of galaxies in the WINGS clusters
G. Fasano, E. Vanzella, A. Dressler +12
We present the morphological catalog of galaxies in nearby clusters of the WINGS survey (Fasano et al. 2006). The catalog contains a total number of 39923 galaxies, for which we pr…
The fundamental plane of EDisCS galaxies - The effect of size evolution
R. P. Saglia, P. Sanchez-Blazquez, R. Bender +15
We study the evolution of spectral early-type galaxies in clusters, groups and the field up to redshift 0.9 using the EDisCS dataset. We measure Re, Ie, and sigma for 154 cluster a…
Superdense Massive Galaxies in Wings Local Clusters
T. Valentinuzzi, J. Fritz, B. M. Poggianti +12
Massive quiescent galaxies at z>1 have been found to have small physical sizes, hence to be superdense. Several mechanisms, including minor mergers, have been proposed for increasi…
WINGS: a WIde-field nearby Galaxy-cluster survey III. Deep near-infrared photometry of 28 nearby clusters
T. Valentinuzzi, D. Woods, G. Fasano +12
Context. This is the third paper of a series devoted to the WIde-field Nearby Galaxy-cluster Survey (WINGS).WINGS is a long term project aimed at gathering wide-field, multiband im…
The evolution of the number density of compact galaxies
B. M. Poggianti, A. Moretti, R. Calvi +4
We compare the number density of compact (small size) massive galaxies at low and high redshift using our Padova Millennium Galaxy and Group Catalogue (PM2GC) at z=0.03-0.11 and th…
A numerical fit of analytical to simulated density profiles in dark matter haloes
R. Caimmi, C. Marmo, T. Valentinuzzi
Analytical and geometrical properties of generalized power-law (GPL) density profiles are investigated in detail. In particular, a one-to-one correspondence is found between mathem…
The red-sequence of 72 WINGS local galaxy clusters
T. Valentinuzzi, B. M. Poggianti, G. Fasano +14
We study the color-magnitude red sequence and blue fraction of 72 X-ray selected galaxy clusters at z=0.04-0.07 from the WINGS survey, searching for correlations between the charac…
Toward Understanding the origin of the Fundamental Plane for Early-Type Galaxies
M. D'onofrio, T. Valentinuzzi, L. Secco +2
We present a panoramic review of several observational and theoretical aspects of the modern astrophysical research about the origin of the Fundamental Plane (FP) relation for Earl…
The Shapes of BCGs and normal Ellipticals in Nearby Clusters
G. Fasano, D. Bettoni, B. Ascaso +13
We compare the apparent axial ratio distributions of Brightest Cluster Galaxies (BCGs) and normal ellipticals (Es) in our sample of 75 galaxy clusters from the WINGS survey. Most B…
WINGS-SPE Spectroscopy in the WIde-field Nearby Galaxy-cluster Survey
A. Cava, D. Bettoni, B. M. Poggianti +11
Aims. We present the results from a comprehensive spectroscopic survey of the WINGS (WIde-field Nearby Galaxy-cluster Survey) clusters, a program called WINGS-SPE. The WINGS-SPE sa…
The evolution of spiral, S0 and elliptical galaxies in clusters
Bianca M. Poggianti, Giovanni Fasano, Daniela Bettoni +10
We quantify the evolution of the spiral, S0 and elliptical fractions in galaxy clusters as a function of cluster velocity dispersion () and X-ray luminosity () using a new…
Tidal energy effects of dark matter halos on early-type galaxies
T. Valentinuzzi, R. Caimmi, M. D'Onofrio
Tidal interactions between neighboring objects span across the whole admissible range of lengths in nature: from, say, atoms to clusters of galaxies i.e. from micro to macrocosms.…
Superdense massive galaxies in the ESO Distant Cluster Survey (EDisCS)
T. Valentinuzzi, B. M. Poggianti, R. P. Saglia +9
We find a significant number of massive and compact galaxies in clusters from the ESO Distant Clusters Survey (EDisCS) at 0.4<z<1. They have similar stellar masses, ages, sizes and…
On the connection between shape and stellar population in early-type galaxies
M. D'Onofrio, T. Valentinuzzi, G. Fasano +11
We report on the discovery of a relation between the stellar mass of early-type galaxies (hereafter ETGs), their shape, as parametrized by the Sersic index , and their ste…