Forming moons around ice giants

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Forming moons around ice giants

Post by Lazarus on 20th November 2018, 4:01 pm

Looks like the moons of Uranus could form from a circumplanetary disc, despite the relatively low masses of the ice giant planets, as opposed to requiring some kind of collision. This also suggests that the pre-Triton satellite system of Neptune might have looked something similar to the regular satellites of Uranus. The distributions look like they get up to a few 10-3 of the planetary masses, so maybe at a stretch it would be possible to find Mars-mass icy moons around extrasolar ice giants.

Szulágyi et al. "In Situ Formation of Icy Moons of Uranus and Neptune"
https://arxiv.org/abs/1811.06574
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