Zobrazeno 1 - 10
of 57
pro vyhledávání: '"de Souza, R E"'
Autor:
Silva, J. M., Lima, J. A. S., de Souza, R. E., Del Popolo, A., Delliou, Morgan Le, Lee, Xi-Guo
The motion of a point like object of mass $M$ passing through the background potential of massive collisionless particles ($m << M$) suffers a steady deceleration named dynamical friction. In his classical work, Chandrasekhar assumed a Maxwellian vel
Externí odkaz:
http://arxiv.org/abs/1604.02034
Autor:
Krone-Martins, A., Ducourant, C., Teixeira, R., Galluccio, L., Gavras, P., Anjos, S. dos, de Souza, R. E., Machado, R. E. G., Campion, J. -F. Le
The ESA Gaia mission, to be launched during 2013, will observe billions of objects, among which many galaxies, during its scanning of the sky. This will provide a large space-based dataset with unprecedented spatial resolution. Because of its natural
Externí odkaz:
http://arxiv.org/abs/1307.5732
The motion of a point like object of mass M passing through the background potential of massive collisionless particles (m << M) suffers a steady deceleration named dynamic friction. In his classical work, Chandrasekhar assumed a Maxwellian velocity
Externí odkaz:
http://arxiv.org/abs/1202.1873
We compare the results of the photometrical analysis of barred galaxies with those of a similar analysis from N-body simulations. The photometry is for a sample of nine barred galaxies observed in the J and Ks bands with the CANICA near infrared (NIR
Externí odkaz:
http://arxiv.org/abs/0910.0768
The structure of globular clusters and elliptical galaxies are described in an unified way through a new class of lowered models inspired on the nonextensive kinetic theory. These power law models are specified by a single parameter q which quantifie
Externí odkaz:
http://arxiv.org/abs/0903.0423
The cream layer is a complex heterogeneous material of biological origin which forms spontaneously at the air-milk interface. Here, it is studied the crumpling of a single cream layer packing under its own weight at room temperature in three-dimensio
Externí odkaz:
http://arxiv.org/abs/0705.2218
Autor:
de Souza, R. E., Teixeira, R.
To better understand our Galaxy, we investigate the pertinency of describing the sys tem of nearby disk stars in terms of a two-components Schwarzschild velocity distributio n.Using the proper motion and parallax information of Hipparcos database, we
Externí odkaz:
http://arxiv.org/abs/0704.3361
Autor:
Lima, J. A. S., de Souza, R. E.
Publikováno v:
Physica A350:303-314,2005
The density profiles and other quantities of physical interest for spherically symmetric systems are computed by assuming that a collisionless stellar gas may relax to the non-Gaussian power law distribution suggested by the nonextensive kinetic theo
Externí odkaz:
http://arxiv.org/abs/astro-ph/0406404
We present BUDDA (BUlge/Disk Decomposition Analysis), a new code devoted to perform a two-dimensional bulge/disk decomposition directly from the images of galaxies. The bulge component is fitted with a generalized Sersic profile whereas disks have an
Externí odkaz:
http://arxiv.org/abs/astro-ph/0404103
Autor:
Gadotti, D. A., de Souza, R. E.
Publikováno v:
Astrophys.J. 583 (2003) L75-L78
We have performed for the first time in the literature a 2D structural analysis on the barred lenticular and face--on galaxies NGC 4608 and NGC 5701. The results indicate that these galaxies either have never had large disks or their disks were almos
Externí odkaz:
http://arxiv.org/abs/astro-ph/0301072