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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 1309 ： ウィキペディア英語版 NGC 1309 NGC 1309 is a spiral galaxy located approximately 120 million light-years away in the constellation Eridanus. It is about 75,000 light-years across; about 3/4s the width of our own galaxy, the Milky Way. Its shape is classified as SA(s)bc, meaning that it has moderately wound spiral arms and no ring. Bright blue areas of star formation can be seen in the spiral arms, while the yellowish central nucleus contains older-population stars. NGC 1309 is one of over 200 members of the Eridanus Group of galaxies.〔 〕 ==Image== The image on the right is a composite of 25 hours of exposures taken by the Hubble Space Telescope (HST) during August and September 2005 using the B (blue: 435 nm), V (visual: 555 nm) and I (infrared: 814 nm) filters. The image is a square capturing 2.9 x 2.9 arcminutes of sky (roughly 100,000 light-years per side).〔 Note: the smaller galaxies visible in the image are in the distant background; they are not satellites.〔 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 1309」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.