Dynamical evolution of escaped plutinos, another source of Centaurs

Context. Weakly chaotic orbits that diffuse very slowly have been found to exist in the plutino population. These orbits correspond to long-term plutino escapers and represent the plutinos presently escaping from the resonance. Aims. We perform numerical simulations to explore the dynamical evolutio...

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Autores principales: Di Sisto, Romina Paula, Brunini, Adrián, Elía, Gonzalo Carlos de
Formato: Articulo
Lenguaje:Inglés
Publicado: 2010
Materias:
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82483
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id I19-R120-10915-82483
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Kuiper Belt
Methods: numerical
spellingShingle Ciencias Astronómicas
Kuiper Belt
Methods: numerical
Di Sisto, Romina Paula
Brunini, Adrián
Elía, Gonzalo Carlos de
Dynamical evolution of escaped plutinos, another source of Centaurs
topic_facet Ciencias Astronómicas
Kuiper Belt
Methods: numerical
description Context. Weakly chaotic orbits that diffuse very slowly have been found to exist in the plutino population. These orbits correspond to long-term plutino escapers and represent the plutinos presently escaping from the resonance. Aims. We perform numerical simulations to explore the dynamical evolution of plutinos that have recently escaped from the resonance. Methods. The numerical simulations were divided into two parts. In the first, we evolved 20? 000 test particles in the resonance to detect and select the long-term escapers. In the second, we numerically integrated the selected escaped plutinos to study their dynamical post escaped behavior. Results. We characterize the escape routes of plutinos and their evolution in the Centaur zone. We derive a present rate of escape of plutinos of between 1 and 10 every 10 years. The escaped plutinos would have a mean lifetime in the Centaur zone of 108 Myr and their contribution to the Centaur population would be a fraction of smaller than 6% of the total Centaur population. In this way, escaped plutinos would be a secondary source of Centaurs.
format Articulo
Articulo
author Di Sisto, Romina Paula
Brunini, Adrián
Elía, Gonzalo Carlos de
author_facet Di Sisto, Romina Paula
Brunini, Adrián
Elía, Gonzalo Carlos de
author_sort Di Sisto, Romina Paula
title Dynamical evolution of escaped plutinos, another source of Centaurs
title_short Dynamical evolution of escaped plutinos, another source of Centaurs
title_full Dynamical evolution of escaped plutinos, another source of Centaurs
title_fullStr Dynamical evolution of escaped plutinos, another source of Centaurs
title_full_unstemmed Dynamical evolution of escaped plutinos, another source of Centaurs
title_sort dynamical evolution of escaped plutinos, another source of centaurs
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/82483
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