Galactic Structure
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Formação estelar no complexo de nuvens moleculares em Monoceros / Star Formation in the Molecular Cloud Complex in Monoceros
We compare two molecular clouds of the Monoceros Complex in order to study their physical conditions related to the early stages of star formation. The selected clouds, Rosette (RMC) and Monoceros R2 (Mon R2), are interesting regions due to their characteristics that may be confronted with the hypothesis of star formation triggered by high velocity clouds (H
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/05/2012
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2. Modelo da galáxia utilizando contagens de estrelas no infravermelho / Galaxy model by using infrared star counts
The majority of first quantitative models for the structure of Galaxy used the star counts method to explore the most important galactic structure parameters as a whole. Some of the most important models owe to Bahcall \& Soneira (1980), the Besançon group (Robin \& Crezé (1986)), Wainscoat et al. (1992), Ortiz \& Lépine (1993), among others.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2008
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3. Fundo estocástico de ondas gravitacionais gerados por buracos negros pré-galáctiocs / Stochastic Background of Gravitational Waves Generated By pre-galactic Black Hole Formation
Observation of the Cosmic Microwave Background Radiation (CMB) provide us with a clear information about the status of matter and radiation at the decoupling era like a snapshot of the Universe 300.000 years after the Big-Bang. Nowadays, through observations of the cosmic structure, we can build-up the history of the Universe from one billion years after the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/02/2008
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4. O sentido da viagem na escritura das Galáxias: o espaço em palimpsesto e a escrita da tradição poética
Galáxias (1984), Haroldo de Campos prepares a record critic of the poetic tradition in providing epifanias, to raise their cosmos space in the sensitivity of the reader, and the intent of the subject-writer. From its conception as a livro-mar, open to travel by the most different genres and poetic spaces emerge a proposal for research around the writing and
Publicado em: 2008
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5. Fundo estocástico de ondas gravitacionais gerados por buracos negros pré-galáctiocs / Stochastic Background of Gravitational Waves Generated By pre-galactic Black Hole Formation
Observation of the Cosmic Microwave Background Radiation (CMB) provide us with a clear information about the status of matter and radiation at the decoupling era like a snapshot of the Universe 300.000 years after the Big-Bang. Nowadays, through observations of the cosmic structure, we can build-up the history of the Universe from one billion years after the
Publicado em: 2008
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6. Correção logarítmica no potencial Newtoniano e sua aplicação a galáxias espirais
A well elaborated characterization of the masses of the galaxies is of basic importance to understand the formation and the evolution of the galaxies, as well as the Universe. The circular speed of the spiral galaxies is used to estimate the mass of the galaxies. The observacional data of the rotation curves exactly show that the circular speeds practically
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2007
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7. Investigações sobre as relações de escala dos sistemas estelares auto-gravitantes / Investigations on the scaling relations of self-gravitating stellar systems
We aim in this work to collect several numerical and analitical investigations concerning the origin of the scaling relations of the self-gravitating stellar systems. These relations depend on a very small number of independent physical parameters that reduce and confine the observational constraints to a plane in this parameter space, called the ""Fundament
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 200105
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8. Investigations on the scaling relations of self-gravitating stellar systems / Investigações sobre as relações de escala dos sistemas estelares auto-gravitantes
We aim in this work to collect several numerical and analitical investigations concerning the origin of the scaling relations of the self-gravitating stellar systems. These relations depend on a very small number of independent physical parameters that reduce and confine the observational constraints to a plane in this parameter space, called the ""Fundament
Publicado em: 2001
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9. Investigações sobre as relações de escala dos sistemas estelares auto-gravitantes / Investigations on the scaling relations of self-gravitating stellar systems
Objetivamos neste trabalho reunir algumas investigações de ordem numérica e analítica sobre a origem das relações de escala dos sistemas estelares auto-gravitantes. Estas relações dependem de um número bastante pequeno de parâmetros físicos independentes, que reduzem e confinam os vínculos observacionais a um plano neste espaço de parâmetros, c
Publicado em: 2001
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10. Fronteiras fractais em sistemas hamiltonianos e em relatividade geral
We study the dynamics of test particles in Hamiltonian systems with escapes, including Newtonian systems (the Hénon-Heiles system for energies above the escape energy) and general-relativistic systems corresponding to static axisymmetric mass distributions, which could be used to model galactic cores; in particular, we study the motion of test particles in
Publicado em: 2000
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11. Gravitational lensing of active galactic nuclei.
Most of the known cases of strong gravitational lensing involve multiple imaging of an active galactic nucleus. The properties of lensed active galactic nuclei make them promising systems for astrophysical applications of gravitational lensing; in particular, they show structure on scales of milliseconds of arc to tens of seconds of arc, they are variable, a
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12. Real or virtual large-scale structure?
Modeling the development of structure in the universe on galactic and larger scales is the challenge that drives the field of computational cosmology. Here, photorealism is used as a simple, yet expert, means of assessing the degree to which virtual worlds succeed in replicating our own.
The National Academy of Sciences.