翻訳と辞書 Words near each other ・ Virgo (constellation) ・ Virgo (moth) ・ Virgo (software) ・ Virgo (surname) ・ Virgo Blaktro and the Movie Disco ・ Virgo Cluster ・ Virgo Consortium ・ Virgo Fidelis Convent Senior School ・ Virgo interferometer ・ Virgo Stellar Stream ・ Virgo Supercluster ・ Virgo Vibes ・ Virgo Williams ・ Virgocentric flow ・ Virgohamna ・ VIRGOHI21 ・ Virgolândia ・ Virgos Merlot ・ Virgularia ・ Virgulariidae ・ Virgílio Lopes ・ Virgílio Mendes ・ Virgínia ・ Viria Sugar Mill ・ Virial coefficient ・ Virial expansion ・ Virial mass ・ Virial stress ・ Virial theorem ・ Viriat Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク VIRGOHI21 ： ウィキペディア英語版 VIRGOHI21 VIRGOHI21 is an extended region of neutral hydrogen (HI) in the Virgo cluster discovered in 2005. Analysis of its internal motion indicates that it may contain a large amount of dark matter, as much as a small galaxy. Since VIRGOHI21 apparently contains no stars, this would make it one of the first detected dark galaxies. Skeptics of this interpretation argue that VIRGOHI21 is simply a tidal tail of the nearby galaxy NGC 4254. ==Observational properties== VIRGOHI21 was detected through radio telescope observations of its neutral hydrogen 21 cm emissions. The detected hydrogen has a mass of about 100 million solar masses and is about 50 million light-years away.〔(【引用サイトリンク】title=New evidence for a Dark Matter Galaxy )〕 By analyzing the Doppler shift of the emissions, astronomers determined that the gas has a high velocity-profile width; that is, different parts of the cloud are moving at high speed relative to other parts. Follow-up Hubble space telescope deep observations of the region have detected very few stars (a few hundred). 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「VIRGOHI21」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.