关于小行星的可能起源（1）谷神星
On the possible origin of the asteroid (1) Ceres
摘要：
在过去的三十年里，小行星（1）谷神星是一个密集的地面和空间观测对象。对这些研究有贡献的一个新的不寻常的发现是，最近探测到从其表面以约6 kg s-1的速率释放水蒸气的局部来源（Küppers等人，2014年）。小行星（1）谷神星和最接近的大小行星（4）灶神星在组成和外观上的巨大区别突出了谷神星在主小行星带中可能起源问题的紧迫性。通过类比一些著名天文学家的早期假设水星和火星的逃逸卫星的主机行星，我们提出了半经验证明了谷神星的合理起源的假设作为卫星的一个分裂的行星在过去的轨道太阳约5 AU。谷神星在太阳系雪线之外的轨道位置解释了谷神星冰冷地幔的形成，这似乎是一个水蒸气来源。
英文摘要：
The last three decades the asteroid (1) Ceres is an object of the intensive ground-and space-based observations. A new unusual contributing to these studies represents the recent detection of localized sources of water vapour releasing from its surface at a rate about 6 kg s-1 (Küppers et al 2014). A drastic distinction between asteroid (1) Ceres and nearest the large asteroid (4) Vesta in terms of their composition and appearance emphasizes an urgent state of a problem of the possible origin of Ceres in the main asteroid belt. By analogy with the early assumptions of some well-known astronomers of Mercury and Mars as the escaped satellites of their host planets we have put forward and semi-empirically have justified a hypothesis for the plausible origin of Ceres as the satellite of a disrupted planet in the past orbited the Sun of ~ 5 AU. The orbital location of this host of Ceres beyond the snow line of the Solar System explains a formation the icy mantle of Ceres, which appears may be a water vapour source.
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