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NGC 3521 is a flocculent spiral galaxy〔 located around 26〔 million light-years away from Earth in the constellation Leo. It has a morphological classification of SAB(rs)bc,〔 which indicates that it is a spiral galaxy with a trace of a bar structure (SAB), a weak inner ring (rs), and moderate to loosely wound arm structure (bc).〔 The bar structure is difficult to discern, both because it has a low ellipticity and the galaxy is at a high inclination〔 of 72.7° to the line of sight.〔 The relatively bright bulge is nearly 3/4 the size of the bar, which may indicate the former is quite massive.〔 The nucleus of this galaxy is classified as an HII LINER,〔 as there is an H II region at the core and the nucleus forms a low-ionization nuclear emission-line region. ==Gallery== File:Hubble shears a woolly galaxy.jpg|NGC 3521 from the Hubble Space Telescope.〔(【引用サイトリンク】url=http://www.spacetelescope.org/images/potw1538a/ )〕 File:NGC 3521SST.jpg|Spitzer Space Telescope File:NGC 3521 GALEX.jpg|GALEX (ultraviolet) File:NGC 3521 2MASS.jpg|2MASS (near-infrared) 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 3521」の詳細全文を読む スポンサード リンク
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