Is Sedna another Triton
Is Sedna another Triton
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塞德娜是另一个海卫一吗
DOI：
10.1051/0004-6361:200500144
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发表时间：
2005
影响因子：
6.5
通讯作者：
C. Bergh
中科院分区：
文献类型：
--
作者：
M. Barucci;D. Cruikshank;E. Dotto;F. Merlin;F. Poulet;C. Ore;S. Fornasier;C. Bergh
塞德娜是迄今为止最大和最遥远的海王星外天体。欧洲南方天文台的甚大望远镜同时使用两台8.2米望远镜在可见光和近红外波长观测到了这一现象。塞德娜的光谱表明其表面存在不同的冰（总丰度>50%）。它的表面成分与其他海王星外天体不同，与海卫一的表面成分相似，特别是可能存在氮和甲烷冰。
Sedna is, so far, the largest and most distant trans-neptunian object. It was observed at visible and near-infrared wavelengths using simultaneously two 8.2 m telescopes at the Very Large Telescope of the European Southern Observatory. The spectrum of Sedna suggests the presence on its surface of different ices (total abundance >50%). Its surface composition is different from that determined for other trans-neptunian objects, and apparently resembles that of Triton, particularly in terms of the possible presence of nitrogen and methane ices.