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NGC 5005
NGC 5005 (also known as Caldwell 29) is an inclined spiral galaxy in the constellation Canes Venatici. The galaxy has a relatively bright nucleus and a bright disk that contains multiple dust lanes. The galaxy's high surface brightness makes it an object that is visible to amateur astronomers using large amateur telescopes. Distance measurements for NGC 5005 vary from 13.7 megaparsecs (45 million light-years) to 34.6 megaparsecs (113 million light-years), averaging about 20 megaparsecs (65 million light-years).〔 ==Nucleus==
NGC 5005 contains a low ionization nuclear emission region (LINER) nucleus. LINER nuclei contain weakly ionized gas. The power source for the LINER emission has been debated extensively, with some researchers suggesting that LINERs are powered by active galactic nuclei that contain supermassive black holes and other researchers suggesting that LINERs are powered by star formation activity.
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 5005」の詳細全文を読む
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