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M33 X-7
M33 X-7 is a black hole binary system in the galaxy M33. The system is made up of a stellar mass black hole and a companion star. M33 X-7 is the largest known stellar black hole with an estimated mass of 15.65 times that of the Sun ().〔http://www.nasa.gov/mission_pages/chandra/news/07-112.html〕 The total mass of the system is estimated to be around , which would make it the most massive black hole binary system. ==Location==
M33 X-7 lies within the Triangulum Galaxy which is approximately 3 million light years (ly) distance from the Milky Way in constellation Triangulum. This would make M33 X-7 one of the furthest confirmed stellar mass black holes known.
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「M33 X-7」の詳細全文を読む
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