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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 NGC 3180 ： ウィキペディア英語版 NGC 3184 NGC 3184 is a spiral galaxy approximately 40 million light-years away〔 in the constellation Ursa Major. It has two HII regions named NGC 3180〔(【引用サイトリンク】work=Results for NGC 3180 )〕 and NGC 3181.〔(【引用サイトリンク】work=Results for NGC 3181 )〕 NGC 3184 is notable for its high abundance of heavy elements and (SN 1999gi) that was a magnitude 14 Type II supernova detected on December 9, 1999. Other supernovae in NGC 3184 include 1921B (mag 13.5), 1921C (mag 11) and 1937F (mag 13.5).〔 == SN 2010dn == On May 31, 2010, Koichi Itagaki detected a magnitude 17 optical transient 33" east and 61" north of the center of NGC 3184 at coordinates 10 18 19.89 +41 26 28.8. This event may be an outbursting Luminous blue variable (LBV) star. Archival Hubble and Spitzer images of NGC 3184 seem to show no progenitor for optical transient SN 2010dn. SN 2010dn is just like SN 2008S and NGC 300-OT.〔 On day 2, SN 2010dn had an unfiltered magnitude of 17.1, corresponding to a peak absolute magnitude of roughly -13.3.〔 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「NGC 3184」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.