3 papers
astro-ph1999
Non radial motions and the shapes and the abundance of clusters of galaxies
A. Del Popolo, M. Gambera
We study the effect of non-radial motions on the mass function, the velocity dispersion function (hereafter VDF) and on the shape of clusters of galaxies using the model introduced…
astro-ph1998
Tidal torques and the clusters of galaxies evolution
A. Del Popolo, M. Gambera
We study the effect of tidal torques on the collapse of density peaks through the equations of motion of a shell of barionic matter falling into the central regions of a cluster of…
astro-ph1996
The influence of dynamical friction on the collapse of spherical density pertubation
A. Del Popolo, M. Gambera, V. Antonuccio-Delogu
We solve numerically the equations of motion for the collapse of a shell of baryonic matter falling into the central regions of a cluster of galaxies, taking into account of the pr…