“It says it was formed somewhere else and this galaxy picked it up.”
This star system wasn’t dragged 13 BILLION light years.
or maybe it was........
I was thinking more of a globular cluster where this star originated from and then ejected.Globular clusters are generally composed of hundreds of thousands of low-metal, old stars. The type of stars found in a globular cluster are similar to those in the bulge of a spiral galaxy but confined to a volume of only a few million cubic parsecs. They are free of gas and dust and it is presumed that all of the gas and dust was long ago turned into stars.