Buscar
Mostrando ítems 1-10 de 1573
The diversity of planetary systems architectures: contrasting theory with observations
(Royal Astronomical Society, 2011-10)
In order to explain the observed diversity of planetary system architectures and relate this primordial diversity to the initial properties of the discs where they were born, we develop a semi-analytical model for computing ...
Multi-planet extrasolar systems - detection and dynamics
(NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCESBEIJING, 2012)
20 years after the discovery of the first planets outside our solar system, the current exoplanetary population includes more than 700 confirmed planets around main sequence stars. Approximately 50% belong to multiple-planet ...
Exploring the orbital evolution of planetary systems
(Institute of Physics Publishing, 2017)
The aim of this paper is to encourage the use of orbital integrators in the classroom to discover and understand the long term dynamical evolution of systems of orbiting bodies. We show how to perform numerical simulations ...
Dynamics of two planets in the 3/2 mean-motion resonance: Application to the planetary system of the pulsar PSR B1257+12
(Springer, 2006-04-01)
This paper considers the dynamics of two planets, as the planets B and C of the pulsar PSR B1257+12, near a 3/2 mean-motion resonance. A two-degrees-of-freedom model, in the framework of the general three-body planar ...
Dynamics of two planets in the 3/2 mean-motion resonance: Application to the planetary system of the pulsar PSR B1257+12
(Springer, 2006-04-01)
This paper considers the dynamics of two planets, as the planets B and C of the pulsar PSR B1257+12, near a 3/2 mean-motion resonance. A two-degrees-of-freedom model, in the framework of the general three-body planar ...
Reliability of orbital fits for resonant extrasolar planetary systems: the case of HD82943
(BLACKWELL PUBLISHING, 2008)
We perform a statistical study of the process of orbital determination of the HD82943 extrasolar planetary system, using the current observational data set of N = 165 radial velocity (RV) measurements. Our aim is to analyse ...
A numerical study of the 1/2, 2/1, and 1/1 retrograde mean motion resonances in planetary systems
(Oxford Univ Press, 2022-07-29)
We present a numerical study on the stability of the 1/2, 2/1, and 1/1 retrograde mean motion resonances in the three-body problem composed of a solar mass star, a Jupiter mass planet, and an additional body with zero mass ...
Probing the final stages of protoplanetary disk evolution with ALMA
(EDP Sciences, 2015)
Context. The evolution of a circumstellar disk from its gas-rich protoplanetary stage to its gas-poor debris stage is not understood well. It is apparent that disk clearing progresses from the inside-out on a short time ...