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NGC 3938
NGC 3938 is a spiral galaxy in the Ursa Major constellation. It was discovered on 6 February 1788 by William Herschel. It is one of the brightest spiral galaxies in the Ursa Major South galaxy group. It is approximately 43 million light years away from Earth.〔 NGC 3938 is classified as type Sc under the Hubble sequence, a loosely wound spiral galaxy with a smaller and dimmer bulge. The spiral arms of the galaxy contain many areas of ionized atomic hydrogen gas, more so towards the center. == Supernova == A supernova has been identified within NGC 3938. SN 2005ay is a type II supernova that was discovered on 27 March 2005 by Doug Rich and had a magnitude of 15.6.〔(【引用サイトリンク】url=http://www.rochesterastronomy.org/sn2005/sn2005ay.html )〕
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 3938」の詳細全文を読む
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