Query : 2004A&A...428..247D

2004A&A...428..247D - Astronomy and Astrophysics, volume 428, 247-253 (2004/12-2)

The transparency of the Solar System to the Oort cloud comets.


Abstract (from CDS):

In long-term Monte Carlo simulations of the dynamics of the Oort cloud planetary perturbations cannot be taken directly into account. To do this we propose a simple approximation: estimating the Solar System transparency coefficient P measuring the probability for a comet to be removed from the cloud by planetary perturbations during a single perihelion passage. We estimated the value of this coefficient from the observed and artificial cometary samples. We excluded nongravitational forces fom our calculations. We obtained P≃0.25 for inner cloud comets and P≃0.5 for the outer and most active part of the cloud. The dependency of P on the comet observability limit OL is also presented for various cometary samples.

Abstract Copyright:

Journal keyword(s): comets: general - Oort cloud - planets and satellites: general

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