So? What's the answer? The closest thing I can find is:
"Mira has a white dwarf companion, meaning that large gravitational "kicks" often aren't enough to unbind a solar system!"
Which still doesn't tell me whether a star could be ejected from the galaxy like this with its planets intact and orbiting it roughly the same way as before.
There's this sentence later in the article:
> While an interaction that happens too close to a planet could eject that as well, simulations indicate that's a rarity, and that most planets should remain intact.
But the way it's phrased, it could be read either way, with the most plausible reading for me being that the planets remain intact, but turn into rogue planets, no longer orbiting the star that's speeding away from them.
It's a fascinating problem. I've been thinking about it for about ten minutes now and I honestly don't know what would happen in this situation.