They are definitely relatively small though still interacting.Ann wrote: ↑Sat Mar 31, 2018 6:03 am
... so the Burbidge's Chain galaxies are about 60,000 light-years apart. Actually, the distance between them will be a bit greater, since a parsec is a bit more than 3 light-years. Maybe the average distance between the Burbidge galaxies is 70,000 light-years. Same difference.
To put that distance in perspective, we may remember that the distance between the Milky Way and the Large Magellanic Cloud is ~160,000 light-years. And the Andromeda galaxy is about 2.5 million light-years away.
So the Burbidge's Chain galaxies live in close and neighborly proximity.
The ~70,000 light-years assumes that they are not accidentally lined up in our direction resulting in foreshortening.