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Questions tagged [runaway-star]

Questions about stars which are moving through space with unusually high velocity relative to the surrounding interstellar medium.

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3 votes
3 answers
226 views

Why don’t runaway stars happen more often?

If stars are clustered together, isn’t a third star being ejected (becoming a runaway star) just a matter of time? Then shouldn’t we expect most of stars to be runaway stars?
Roberto's user avatar
  • 157
0 votes
1 answer
103 views

When a fast-moving star goes supernova, how will the resulting remnant evolve?

Let's take a massive star that has zero velocity. When this star goes supernova, the resulting supernova remnant will expand in a sphere. But, let's take a runaway star travelling at 200 km/s. I am ...
WarpPrime's user avatar
  • 6,733
3 votes
2 answers
198 views

How can a star be "thrown out of the Milky Way" by Sagittarius A*?

A recent publication reports that a hypervelocity star on course to leave the galaxy was found, likely accelerated by the black hole at the center of the Milky Way in a process predicted by Jack G. ...
Peter - Reinstate Monica's user avatar
7 votes
1 answer
383 views

Are black holes solely responsible for hyper velocity stars?

I read that the stars orbiting around Sagittarius A* (a.k.a the supermassive black hole located at the heart of the Milky Way) move very fast (many times faster than our Sun moves across the galaxy), ...
user6760's user avatar
  • 2,511