2-Gyr Simulation of the Oort-Cloud Formation. I. Introduction on a New Model of the Outer Oort-Cloud Formation View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2009-09

AUTHORS

Luboš Neslušan, Piotr A. Dybczyński, Giuseppe Leto, Marián Jakubík, Tomáš Paulech

ABSTRACT

The study of the reservoirs of small bodies in the Solar System can help us to refine our theory of the origin and evolution of the whole planetary system we live in. In this contribution, we introduce a simulation of the evolution of an initial proto-planetary disc (PPD) for 2 Gyr period, in which 10,038 studied test particles (TPs), representing the disc, are perturbed by four giant planets in their current orbits and having their current masses. In addition, Galactic-tide and stellar perturbations are considered. The outer Oort cloud (OC) appears to be formed within about 0.5 Gyr. At 2 Gyr, only 0.14% of all TPs reside in the outer OC, according to our simulation. This is the largest discrepancy with the results of previous authors. The TPs in the outer OC originate from almost all regions of the PPD. Specifically, 14, 7, 29, 21, and 29% of all TPs, that are the members of the outer OC at 2 Gyr, originate in the Jupiter, Saturn, Uranus, Neptune, and Edgeworth-Kuiper-belt regions, respectively. The largest number of the TPs, 6,669 (66.4%), was ejected into the interstellar space. Besides other results, we found a dominance of high galactic inclinations of outer-OC orbits. Obviously, this is a consequence of the action of Galactic tide. More... »

PAGES

257-261

References to SciGraph publications

  • 1985. An Efficient Integrator that Uses Gauss-Radau Spacings in DYNAMICS OF COMETS: THEIR ORIGIN AND EVOLUTION
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    http://scigraph.springernature.com/pub.10.1007/s11038-009-9298-7

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    http://dx.doi.org/10.1007/s11038-009-9298-7

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