碩士 / 國立中央大學 / 天文研究所 / 100 / Many binary asteroids distribute at different regions in the solar system. Their
properties provide the restrictive condition to construct evolution model in different
regions. The trans-Neptunian binary (TNB), especially, being classified the dynamical
cold Kuiper belt object, cannot explain their existence by various formation theories
because their near-equal mass ratio, wide distributed eccentricity, higher large orbit
ratio, and near-equal prograde to retrograde orbit ratio. But their evolution is rare
discussed. We study gravitational interaction between TNBs and trans-Neptunian
objects (TNOs) after TNBs formed. We also test the collisional cross section of binary
planetesimals (BPs) to explain our results. Our results show the binary-single
collisional cross section is larger than the single-single collision even if the relative
velocity is high ( ), and the binary-single collisional cross section
depend on the semi-major axis of binary. We also find out that TNBs with the high
eccentric ( ) and larger semi-major axis ( ) are not easy to survival.
Their orbits are changed easily even if they survive after the TNOs close encounter,
vice versa. Follow our results, we think the low eccentric and small orbital TNBs are
dominated by tidal evolution and the evolution of higher eccentric and large orbital
TNBs are dominated by the close encounter with TNOs. In future, about studying the
properties of TNBs, we suggest that tidal evolution and frequency of the close
encounter events should be considered in detail.
| Identifer | oai:union.ndltd.org:TW/100NCU05199003 |
| Date | January 2012 |
| Creators | Zong-Fu Sie, 謝宗富 |
| Contributors | Wing-Huen Ip, 葉永烜 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 72 |
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