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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク S Persei ： ウィキペディア英語版 S Persei S Persei is a red supergiant or hypergiant located in the Double Cluster in Perseus, north of the cluster NGC 869. It is a representative of the semiregular variables, whose periods of variation are subject to more irregularities than those of Mira variable red supergiants. Many of the visually bright (5th - 7th magnitude) variable stars belong to this class of semiregulars, as these stars are extremely large and luminous, and hence visible across long distances. S Persei may be over 1,000 times the sun's radius (), but the most likely value is .〔 S Persei is surrounded by clouds containing water molecules which produce maser emission. This allows the distance to be measured very accurately using very long baseline interferometry.〔 ==See also== * List of largest stars 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「S Persei」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.