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NGC 1156 is a dwarf irregular galaxy in the Aries constellation of the type . It is considered a ''Magellanic''-type irregular. The galaxy has a larger than average core, and contains zones of contra-rotating gas. The counter-rotation is thought to be the result of tidal interactions with another gas rich galaxy some time in the past. The AGES survey has discovered a candidate dark galaxy close to NGC 1156, one of only a few so far found. It has a H II nucleus. ==External links== * (Arecibo Survey Produces Dark Galaxy Candidate ) (SpaceDaily) * http://www.astrophotos.net/pages/GALAXIES/NGC%201156.htm * http://www.jupiter-jp.net/~ike/English/description/N1156.htm * http://www.ursa.fi/~sirius/cgi-bin/rade.cgi?NGC1156 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 1156」の詳細全文を読む スポンサード リンク
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