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Superstar Is Remnant of Three-Star System Mangled by Black Hole
Here’s what scientists think happened, oh, about a hundred million years ago. There was this three-star system. The three linked stars were strolling through the galaxy but got too close to the giant black hole at the center. The hole swallowed one of those stars and hurled away the other two. Those two careening stars merged to form one super-hot, incredibly fast-moving blue star, which is now on the very outskirts of the Milky Way.
科学家们如是说：约一亿年前，有这么一个三恒星系。这三颗亲密无间的恒星在银河系里遨游，不过它们离银心太近，一不小心遭遇了那里的黑洞。黑洞吞没了其中一颗恒星，甩飞了另外两颗。这两颗恒星跌跌撞撞，最终合体形成了一个超热量、超高速的蓝色星球，现如今已在遥远的银河系尽头。
And here’s how scientists came up with that dramatic tale, which they just published in Astrophysical Journal Letters. [Warren Brown et al., http://bit.ly/aSLafm]
科学家们是如何编织出这么奇幻的故事的呢？《天文物理期刊通訊》就有记载。
They discovered what they call a hypervelocity star, which moves three times faster than our sun does through the galaxy. According to new information provided by the Hubble telescope, the star originated deep within the Milky Way.
科学家们发现了一颗以太阳的3倍速度划过银河系的恒星，他们称之为超高速恒星。通过哈勃望远镜观察得来的最新资料显示，这颗恒星衍生于银河系深处。
The scientists used the Hubble to figure out the direction of the star’s travels and the distance from the galactic center, along with the star’s mass, age and speed. Its unusual attributes give rise to the idea that one star was swallowed and transferred its momentum to the other two, which transformed into a blue superstar. Hurtling through the galaxy, faster than a speeding sun.
科学家们借助哈勃望远镜测算出超高速恒星的运行方向、与银心的距离以及该恒星的质量、年龄和速度。它超乎寻常的属性让科学家们萌生了这样的想法：一颗恒星被吞没时，将它的冲量转移给另外两颗恒星，这两颗恒星遂合成一颗蓝色超级恒星，畅游太空，这速度，居然比太阳公公还彪悍啊~
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