Comets and constraints on the solar system formation
Comets and constraints on the solar system formation
复制标题
彗星和对太阳系形成的限制
DOI：
10.1017/s1539299600009187
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
A. Levasseur
中科院分区：
文献类型：
--
作者：
A. Levasseur
1985年至1986年哈雷彗星返回期间获得了新的重要数据，包括对彗核和彗发的现场观测。由于对观察结果的解释并不简单，因此结果以相当保守的方式呈现。提出了一些有关太阳系形成的线索，例如原子核的形状、其低密度、奥尔特云的估计质量、哈雷彗星的元素丰度。广泛讨论了与同位素丰度（氘富集、碳同位素可能异常）和彗星尘埃（复杂有机化合物、亚微米大小的尘埃颗粒）相关的限制。
New and important data have been obtained during the 1985-1986 return of comet Halley, including in situ observations of the nucleus and the coma. Since the interpretation of the observations is not straightforward, the results are presented in a rather conservative manner. Some clues to the solar system formation are suggested, e.g. the shape of the nucleus, its low density, the estimated mass of the Oort cloud, the elemental abundances in comet Halley. Constraints related to isotopic abundances (deuterium enrichment, possible anomalies in carbon isotopes) and to cometary dust (complex organic compounds, submicron sized dust particles) are extensively discussed.