Substellar object

So if you want to bring up the figure five, we can look at a different kind of binary system.

So that's one where you have kind of a substellar Substellar means brown dwarf companion to a star.

There are also things that might be a brown dwarf companion to another brown dwarf.

And so what this figure is showing, there are kind of, let's see, eight or nine sets of three images, if that makes sense.