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SUMMARY:Evidence of outer planet migration in the orbital distribution of 
 the Kuiper belt objects - Emel'yanenko\, V (RAS)
DTSTART:20091109T145000Z
DTEND:20091109T151000Z
UID:TALK21398@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:The Kuiper belt consists of two main groups which are usually 
 called the 'hot' and 'cold' populations. Very different orbital and physic
 al properties of these populations imply a different dynamical origin. Whi
 le the 'hot' population could be delivered to the Kuiper belt from the reg
 ion interior to ~35 AU during the high-eccentricity phase of Neptune's mig
 ration (Levison et al.\, 2008\, Icarus\, 196\, 258)\, the explanation of t
 he origin for the 'cold' population needs considering processes with much 
 smaller dynamical excitation. We investigate dynamical features of migrati
 on of low mass planets into the Kuiper belt region. Various profiles for t
 he surface density of a planetesimal disk and masses of migrating planets 
 are studied. It is shown that an Earth-mass planet\, typically\, reverses 
 its migration near an outer edge of the planetesimal disc. Many objects mo
 ve from the inner planetesimal disc to the Kuiper belt region during the p
 lanetary migration. After transferring objects to the Kuiper belt the plan
 et returns to the inner region. The migration of the Earth-mass planet in 
 the trans-Neptunian planetesimal disk reproduces well general orbital char
 acteristics of the 'cold' Kuiper belt population. 
LOCATION:Satellite
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