These results help explain how a supermassive black hole can alter the evolution of its host galaxy.
这些结论帮助解释了特大质量黑洞如何可以改变它所在星系的演化。
The progenitor was comparatively easy to find because it was one of the brightest stars in the host galaxy.
前身恒星很容易找到,因为它是这个宿主星系中最亮的恒星之一。
Chakrabarti says her method should work for satellites as small as one one-thousandth the mass of the host galaxy.
查克拉·巴蒂说她的方法只能应用于卫星星系质量只有主星系质量的千分之一的星系。
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