Solidot: 星系高速驱逐星团

Solidot

奇客的资讯，重要的东西

星系高速驱逐星团
http://solidot.org.feedsportal.com/c/33236/f/556826/s/3a0a173b/sc/38/l/0L0Ssolidot0Borg0Cstory0Dsid0F39390A/story01.htm
May 4th 2014, 10:03

M87星系向地球方向扔出了一个含有数千恒星的星团，天文学家称该星团为HVGC-1，其时速超过200万英里。它的命运已经注定：永远在星系之间的虚空中漂流。天文学家以前发现过流浪的恒星，这是首次发现流浪的星团。报告（预印本）将发表在《The Astrophysical Journal Letters》上。天文学家是在研究M87时无意中发现被驱逐出去的星团，推测星团高速飞离的一个可能原因是M87核心有两个超大质量黑洞，星团过于靠近黑洞，外层的恒星被撕裂，但内层的核心保留完整。两大黑洞就像弹弓一样将核心的星团射出星系。This entry passed through the Full-Text RSS service — if this is your content and you're reading it on someone else's site, please read the FAQ at fivefilters.org/content-only/faq.php#publishers.



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