INVESTIGADORES
BRUNINI Adrian
congresos y reuniones científicas
Título:
The contribution of plutinos to the Centaur population
Autor/es:
DI SISTO, ROMINA P.; BRUNINI, ADRIÁN; DE ELÍA, GONZALO C.
Lugar:
Rio de Janeiro
Reunión:
Congreso; Icy Bodies of the Solar System, Proceedings of the International Astronomical Union, IAU Symposium, Volume 263; 2010
Institución organizadora:
Observatorio Nacional de Rio
Resumen:
We present a study of the dynamical evolution of
plutinos recently
escaped from the resonance through numerical
simulations. It was shown
in previous works the existence of weakly chaotic
orbits in the plutino
population that diffuse very slowly finally diving
into a strong chaotic
region. These orbits correspond to long-term plutino
escapers and then
represent the plutinos that are escaping from the
resonance at present.
Then, we divided the numerical simulation in two
parts. First, we
develop a numerical simulation of 20,000 test
particles in the resonance
in order to detect the long-term escapers. We set the
initial orbital
elements such that cover the present observational
range of orbital
elements of plutinos. Second, we perform a numerical
simulation of the
selected escaped plutinos in order to study their
dynamical post escaped
behavior. We describe and characterize the routes of
escape of plutinos
and their evolution in the Centaur zone. Also, we
obtain that Centaurs
coming from plutinos would represent a fraction of
less than 6% of the
total Centaur
population.