It’s not a typical binary. The money quote is 2/3 of the way down, essentially saying this is a bog standard G-type star with no obvious means to end up in this configuration that doesn’t involve complex interactions, up to and including a black hole wandering by and capturing the star (and probably sending all its planets spinning off into the universe).
Your typical binary like this is in close orbit, with far higher radial velocities (ie they are spinning like a top), and they show the effects of having been within shooting distance of the creation of their special friend (ie they got fried in a supernova).
Your typical binary like this is in close orbit, with far higher radial velocities (ie they are spinning like a top), and they show the effects of having been within shooting distance of the creation of their special friend (ie they got fried in a supernova).