Collisional Evolution Of The Populations Of Trans-Neptunian Objects

Details Collisional Evolution Of The Populations Of Trans-Neptunian Objects Collisional Evolution Of The Populations Of Trans-Neptunian Objects

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006dps....38.4407c&link_type=abstract

American Astronomical Society, DPS meeting #38, #44.07; Bulletin of the American Astronomical Society, Vol. 38, p.565

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The Trans-Neptunian region is yet another example of a collisional system of small bodies in the Solar System. In the last decade the number of TNOs with reliable orbital elements is steadily increasing and we can begin to try and compare collisional evolution models to observed populations.
We are developing a model that takes into account the known physics of the fragmentation of icy/rocky bodies, and that considers the different orbital characteristics of the Trans-Neptunian regions ("plutinos" or resonant objects, classical belt and scattered disk) and their mutual interactions.
In the last few years it has been proposed that the outer planets, and in particular Neptune, have undergone a migration to their present location and that the TNO region may have experienced a similiar process. With this purpose we also mimick this migration and compare the corresponding outcomes with other possible scenarios.
What was the primordial distribution in this region?
Is the collisional cascade efficient enough to justify the loss of mass occurred in this region?
Is the Trans-Neptunian belt collisionally relaxed?
How did Neptune's migration affect the distribution of TNOs?
These are some of the key questions regarding TNOs and the evolution of the outer Solar System that we try to help answering with this work.
With aknowledgements to the spanish Ministerio de Educacion y Ciencia for financial support.

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