Planetary migration in a planetesimal disk: why did Neptune stop at 30 AU?
作者： Rodney S Gomes , Alessandro Morbidelli , Harold F Levison
DOI: 10.1016/J.ICARUS.2004.03.011
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摘要: Abstract We study planetary migration in a gas-free disk of planetesimals. In the case our Solar System we show that Neptune could have had either damped migration, limited to few AUs, or forced up disk's edge, depending on mass density. also possibility runaway isolated planets very massive disk, which might be relevant for extra-solar systems. investigate problem depletion Kuiper belt light and conclude lost its pristine well before reached current position. Therefore, effectively hit outer edge proto-planetary disk. dynamics embryos embedded planetesimal elimination Earth-mass Mars-mass originally placed outside initial location requires existence near 30 AU.
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