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NGC 5253
NGC 5253 is an irregular galaxy in the constellation Centaurus. It was discovered by John Frederick William Herschel on 15 March 1787.〔''The scientific papers of Sir William Herschel'' by J. L. E. Dreyer. Royal Astronomical Society London 1912.〕 ==Properties== NGC 5253 is located within the M83 Subgroup of the Centaurus A/M83 Group, a relatively nearby galaxy group that includes the radio galaxy Centaurus A and the spiral galaxy M83 (the Southern Pinwheel Galaxy). NGC 5253 is considered a dwarf starburst galaxy and also a blue compact galaxy. Supernova 1972E, the second-brightest recent supernova visible from Earth (peak visual magnitude of 8.5, fainter only than SN 1987A in the 20th century), occurred in this galaxy. Another supernova, SN 1895b, also has been recorded in the galaxy.
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 5253」の詳細全文を読む
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