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NGC 2997 NGC 2997 is a face-on unbarred spiral galaxy about 40 million light-years away in the constellation Antlia.〔 It is the brightest galaxy of the NGC 2997 group of galaxies. NGC 2997 is particularly notable for a nucleus surrounded by a chain of hot giant clouds of ionized hydrogen. It is featured on the cover of the first edition of ''Galactic Dynamics'' by James Binney and Scott Tremaine.〔(【引用サイトリンク】Binney, J. and Tremaine, S.: Galactic Dynamics. )〕 == Other resources ==
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 2997」の詳細全文を読む
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