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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 HR 4049 ： ウィキペディア英語版 HR 4049 HR 4049, also known as HD 89353 and AG Antliae, is a post-asymptotic-giant-branch star in the constellation Antlia. A very metal-poor star, it is surrounded by a thick unique circumbinary disk enriched in several molecules. With an apparent magnitude of 5.53, the star can readily be seen under ideal conditions. The star, located approximately distant,〔 has been found to be a binary star; however, likely the most unique feature about this star is its peculiar spectrum. The star appears, based on its spectrum in the Balmer series, to be a blue supergiant, although in reality it is an old low-mass star on the post-AGP phase of its life. The star is also undergoing intense mass-loss and is a unique variable, ranging between magnitudes 5.29 and 5.83 with a period of 429 days ==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「HR 4049」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.