PREDNASAJUCI / LECTURER : 

Marian Jakubik

NAZOV / TITLE : 

The trans-Neptunian population from the simulation of the dynamical
evolution of proto-planetary disc for 2 Gyr

ABSTRAKT / ABSTRACT : 

	In course to obtain a consistent picture of the formation
of all trans-Neptunian (TN) small-body reservoirs, Oort cloud including,
we simulate the dynamical evolution of 14799 test particles (TPs)
representing once existing proto-planetary disc, its part in 4-90 AU.
The perturbations by four giant planets, Galactic tide, and passing
stars were considered. Our model does not assume any migration and
growth of planets.
    In this contribution, we use our output data to present the predicted 
structure of the TN populations: resonant objects (mean-motion resonances 
with Neptune), classical Edgeworth-Kuiper belt (EKB) and scattered disc (SD).
	Due to a strong observational selection, our comparison between the model 
and reality is only approximative. We can conclude that our model qualitatively
provides all observed MMRs. With respect to the selection effects biasing the
observed structure of SD, a good agreement appears between the structure of the 
disc in our model and observed disc.
	In heliocentric distances 33-36.3 AU, 36.6-39.8 AU, and beyond 42.2 AU,
more than 90% of TPs remain on their almost initial, dynamically very
cold orbits (e < 0.035; i < 0.065 rad). We refer to this sub-population 
as "very cold EKB" (VCEKB). On contrary, there are only few observed
VCEKB objects in the current database of TNOs.