66 citations · 597 across the 33 of their papers we have counts for
8 papers · 1 filter
Weakly Nonlocal Hydrodynamics and the Origin of Viscosity in the Adhesion Model
A. L. B. Ribeiro, J. G. Peixoto de Faria
We use the weakly nonlocal hydrodynamics approach to obtain a dynamical equation for the peculiar velocity field in which the viscosity term is physically motivated. Based on some…
Nonextensivity and Galaxy Clustering in the Universe
Carlos Alexandre Wuensche, Andre Luiz B. Ribeiro, Fernando M. Ramos +1
We investigate two important questions about the use of the nonextensive thermostatistics (NETS) formalism in the context of nonlinear galaxy clustering in the Universe. Firstly, w…
Dissipationless Collapse of Spherical Protogalaxies and the Fundamental Plane
Christine C. Dantas, Hugo V. Capelato, Reinaldo R. de Carvalho +1
Following on from the numerical work of Capelato, de Carvalho & Carlberg (1995, 1997), where dissipationless merger simulations were shown to reproduce the "Fundamental Plane" (FP)…
The Two-Component Virial Theorem and the Physical Properties of Stellar Systems
Christine C. Dantas, Andre L. B. Ribeiro, Hugo V. Capelato +1
Motivated by present indirect evidences that galaxies are surrounded by dark matter halos, we investigate whether their physical properties can be described by a formulation of the…
The Evolution of Galaxies in Compact Groups
Roger Coziol, Reinaldo R. de Carvalho, Hugo V. Capelato +1
We present the analysis of the spectra of 62 galaxies in 15 compact groups. The galaxies were classified in four activity classes: galaxies without emission, starburst nucleus gala…
The Nature of the Activity in Hickson Compact Groups of Galaxies
Roger Coziol, André L. B. Ribeiro, Reinaldo R. de Carvalho +1
We present the results of the spectral classification of the 82 brightest galaxies in a sample of 17 compact groups. We verify that the AGNs are preferentially located in the most…