当前位置: X-MOL 学术Mon. Not. R. Astron. Soc. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Perturbation Maps and the ring of Haumea
Monthly Notices of the Royal Astronomical Society ( IF 4.8 ) Pub Date : 2020-06-16 , DOI: 10.1093/mnras/staa1696
Diogo M Sanchez 1 , Rogerio Deienno 2 , Antonio F B A Prado 1 , Kathleen C Howell 3
Affiliation  

The dwarf planet Haumea is a trans-Neptunian object that is orbited by two moons and has a recently discovered ring. The particles of this ring are near the 3:1 resonance between the spin of Haumea and the orbital motion of the particles. In this work, the ring of Haumea is investigated using Perturbation Maps. These maps show the behaviour and impact of perturbations acting over particles around Haumea. The information coming from the maps depends on the integral type for the disturbing acceleration used to build the maps. The types II and IV are used. The numerical simulations are focused in the region between 2000 and 2500 km from the centre of Haumea, which is the region where the ring was observed, considering two initial values for the 3:1 resonant angle: θres = 0° and θres = 270°. The possible stable region for the initial angle θres = 0° is larger than the stable region for the initial angle θres = 270°. Furthermore, we found that these stable regions are not continuous, indicating that there are possible gaps in the ring. Therefore, our results suggest that Haumea may not have only one single ring, but a system of rings instead. Possible transit of the particles between the ring and the region close to the orbit of Namaka is also shown.

中文翻译:

摄动图和Haumea环

矮行星Haumea是一个横穿海王星的天体,由两个卫星绕行,并具有最近发现的环。该环的粒子接近Haumea的自旋与粒子的轨道运动之间的3:1共振。在这项工作中,使用摄动图对豪梅阿环进行了研究。这些图显示了扰动作用于Haumea周围粒子的行为和影响。来自地图的信息取决于用于构建地图的干扰加速度的整数类型。使用类型II和IV。数值模拟集中在距Haumea中心2000至2500 km的区域内,该区域是观察到圆环的区域,考虑了3:1共振角的两个初始值:θres  = 0°和θres = 270°。初始角θres  = 0°的可能稳定区域大于初始角θres  = 270°的稳定区域。此外,我们发现这些稳定区域不是连续的,这表明环中可能存在间隙。因此,我们的结果表明,Haumea可能不仅只有一个环,而是一个环系统。还显示了粒子在环和靠近Namaka轨道的区域之间可能的过渡。
更新日期:2020-06-30
down
wechat
bug