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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 Doradus ： ウィキペディア英語版 S Doradus S Doradus is one of the brightest stars in the Large Magellanic Cloud (LMC),〔 a satellite of the Milky Way. A hypergiant, it is one of the most luminous stars known (sometimes more luminous than −10 absolute magnitude), but so far away that it is invisible to the naked eye. S Doradus is the brightest member of the open cluster NGC 1910, visible in binoculars as a bright condensation within the main bar of the LMC. This star belongs to its own eponymous S Doradus class of variable stars (these classes are usually named after their prototypes); also designated as luminous blue variables or LBVs. S Doradus exhibits long slow changes in brightness, punctuated by occasional outbursts. The spectrum is variable, a typical and defining characteristic of LBVs. In its quiescent phase, it has a B type spectrum (with emission) and a temperature around 20,000K. In outburst the temperature decreases and has been observed with the spectrum of an F supergiant and a temperature below 8,000K.〔 ==See also== *Eta Carinae 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 Doradus」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.