The Neptunian satellite system is unusual. The major satellites of Jupiter, Saturn and Uranus are all in prograde, low inclination orbits. Neptune on the other hand, has the fewest satellites and most of the system's mass is within one irregular satellite, Triton. Triton was most likely captured by Neptune and destroyed the primordial regular satellite system. We investigate the interactions between a newly captured Triton and a prior Neptunian satellite system. We find that a prior satellite system with a mass ratio similar to the Uranian system or smaller has a substantial likelihood of reproducing the current Neptunian system, while a more massive system has a low probability of leading to the current configuration. Moreover, Triton's interaction with a prior satellite system may offer a mechanism to decrease its high initial semimajor axis fast enough to preserve small irregular satellites (Nereid-like), that might otherwise be lost during a prolonged Triton circularization via tides alone.

中文翻译：

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Triton 的演化与原始海王星卫星系统

海王星卫星系统是不寻常的。木星、土星和天王星的主要卫星都在顺行、低倾角轨道上。另一方面，海王星的卫星最少，系统的大部分质量都在一颗不规则卫星海卫一内。Triton 很可能被海王星捕获并摧毁了原始的常规卫星系统。我们调查了新捕获的 Triton 与先前的海王星卫星系统之间的相互作用。我们发现，质量比与天王星系统相似或更小的先前卫星系统有很大可能再现当前的海王星系统，而质量更大的系统导致当前配置的可能性较低。此外，特里顿