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IC 4406
IC 4406 is a planetary nebula near the western border of the constellation Lupus, the Wolf. It has dust clouds and has the shape of a torus. Despite this, it looks somewhat rectangular because it is seen from its side as viewed from Earth, almost in the plane〔 of its equator. ==Structure== IC 4406 is bipolar and appears to be a prolate spheroid with strong concentrations of material in its equator.〔 This kind of structure is a natural product of a bipolar model.〔 The knots of IC 4406 have a "lacy" appearance and have no ordered symmetry towards the central star.〔 The knots have no tails.〔 None of the features have bright edges.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「IC 4406」の詳細全文を読む
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