It's a good question, to which I do not know the answer.
This (http://www.spaceflightnow.com/news/n0412/01passingstar/) is an interesting study, though: the idea that early disk-on-disk collisions could be important. The dynamical results look just like colliding spiral galaxy pairs to me.
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Re: Which leads us to ask:
Date: 2004-12-09 12:47 am (UTC)This (http://www.spaceflightnow.com/news/n0412/01passingstar/) is an interesting study, though: the idea that early disk-on-disk collisions could be important. The dynamical results look just like colliding spiral galaxy pairs to me.