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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 WD 1337+705 ： ウィキペディア英語版 WD 1337+705 WD 1337+705 is a star in the constellation Ursa Minor. Shining with an apparent magnitude of 12.8, it is white dwarf 0.59 times as massive as the Sun. It is 85 light-years distant from Earth.〔 It has 3% of the Sun's luminosity. In 1997, Jay Holberg and colleagues discovered magnesium in its spectrum, which suggests that it has some low mass companion or accretion of material happening as the star's temperature is not hot enough for its intrinsic emission. Despite this, no direct evidence for a circumstellar disc, such as an infrared excess, has come to light. ==References== 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「WD 1337+705」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.