159 citations · 254 across the 15 of their papers we have counts for
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Clusters of Galaxies as Self-Gravitating Systems
Florence Durret, Ricardo Demarco, Frederic Magnard +1
Self-gravitating systems such as elliptical galaxies appear to have a constant specific entropy and obey a scaling law relating their potential energy to their mass. These properti…
Energy, entropy and mass scaling relations for elliptical galaxies. Towards a physical understanding of their photometric properties
I. Marquez, G. B. Lima Neto, H. Capelato +3
In the present paper, we show that elliptical galaxies (Es) obey a scaling relation between potential energy and mass. Since they are relaxed systems in a post violent-relaxation s…
Optical and X-ray analysis of the cluster of galaxies Abell 496
F. Durret, C. Adami, D. Gerbal +1
We present a detailed analysis of the cluster of galaxies \a4. The optical data include a redshift catalogue of 466 galaxies, out of which 274 belong to the main cluster and a CCD…
Gravo-thermal properties and formation of elliptical galaxies
I. Marquez, G. B. Lima Neto, H. Capelato +2
We have analyzed a sample of galaxies belonging to three clusters: Coma, Abell 85, and Abell 496 (real galaxies) and a sample of simulated elliptical galaxies formed in a hierarchi…
A multi-wavelength analysis of the cluster of galaxies ABCG 194
Elena Nikogossyan, Florence Durret, Daniel Gerbal +1
(Abridged) We present a morphological and structural analysis of the Richness zero cluster ABCG 194, known as a ``linear cluster'', based on a catalogue of 97 galaxies with B magni…
The specific entropy of elliptical galaxies: an explanation for profile-shape distance indicators?
Gastao B. Lima Neto, Daniel Gerbal, Isabel Marquez
Dynamical systems in equilibrium have a stationary entropy; we suggest that elliptical galaxies, as stellar systems in a stage of quasi-equilibrium, may have a unique specific entr…