482 citations
- Valongo ObservatoryBR72 papers
- Universidade Federal do Rio Grande do NorteBR13 papers
- European Southern ObservatoryCL11 papers
- Instituto Nacional de Pesquisas EspaciaisBR10 papers
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- Thüringer Landessternwarte TautenburgDE8 papers
- Centro Brasileiro de Pesquisas FísicasBR7 papers
- Observatoire de la Côte d’AzurFR7 papers
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- Osservatorio Astronomico di PadovaIT6 papers
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7 papers · 1 filter
NSCC -- A New Scheme of Classification of C-rich Stars Devised from Optical and Infrared Observations
Ana Beatriz de Mello, Silvia Lorenz-Martins, Francisco Xavier de Araújo +2
A new classification system for carbon-rich stars is presented based on an analysis of 51 AGB carbon stars through the most relevant classifying indices available. The extension in…
The luminosity function of galaxies in elliptical-dominated galaxy groups: clues on the nature of fossil groups
Raimundo Lopes de Oliveira, Claudia Mendes de Oliveira, Renato Dupke +2
We have started a study of luminosity functions of Fossil Group candidates in order to characterize the faint-end of their galaxy distribution. Here we report on results of nine of…
Electrically charged fluids with pressure in Newtonian gravitation and general relativity in d spacetime dimensions: theorems and results for Weyl type systems
José P. S. Lemos, Vilson T. Zanchin
Previous theorems concerning Weyl type systems, including Majumdar-Papapetrou systems, are generalized in two ways, namely, we take these theorems into d spacetime dimensions (${\r…
A generalized equation of state for dark energy
E. M. Barboza, J. S. Alcaniz, Zong-Hong Zhu +1
A generalized parameterization for the dark energy equation of state (EoS) is proposed and some of its cosmological consequences are investigated. We show that in the limi…
Non-gaussian statistics and the relativistic nuclear equation of state
F. I. M. Pereira, R. Silva, J. S. Alcaniz
We investigate possible effects of quantum power-law statistical mechanics on the relativistic nuclear equation of state in the context of the Walecka quantum hadrodynamics theory.…
On the Stability of the Satellites of Asteroid 87 Sylvia
O. C. Winter, L. A. G. Boldrin, E. Vieira Neto +5
he triple asteroidal system (87) Sylvia is composed of a 280-km primary and two small moonlets named Romulus and Remus (Marchis et al 2005). Sylvia is located in the main asteroid…