109 citations · 215 across the 5 of their papers we have counts for
5 papers
The construction of non-spherical models of quasi-relaxed stellar systems
G. Bertin, A. L. Varri
Spherical models of collisionless but quasi-relaxed stellar systems have long been studied as a natural framework for the description of globular clusters. Here we consider the con…
A twelve-image gravitational lens system in the z ~ 0.84 cluster Cl J0152.7-1357
C. Grillo, M. Lombardi, P. Rosati +6
Gravitational lens modeling is presented for the first discovered example of a three-component source for which each component is quadruply imaged. The lens is a massive galaxy mem…
Cosmological parameters from strong gravitational lensing and stellar dynamics in elliptical galaxies
C. Grillo, M. Lombardi, G. Bertin
We show how the combination of observations related to strong gravitational lensing and stellar dynamics in ellipticals offers a new way to measure the cosmological matter and dark…
Slow evolution of elliptical galaxies induced by dynamical friction III. Role of density concentration and pressure anisotropy
S. E. Arena, G. Bertin
In this paper we study the infall, by dynamical friction, of rigid "satellites" taken in a variety of initial configurations and models. We thus measure how dynamical friction depe…
Local stability of self-gravitating fluid disks made of two components in relative motion
Giuseppe Bertin, Antonio Cava
Context. We consider a simple self-gravitating disk, made of two fluid components characterized by different effective thermal speeds and interacting with one another only through…