I second the thanks, Eric! Your "stripped via collision" lead me to Google. I try to follow Ethan Siegel, but totally missed this post from last year:
https://medium.com/starts-with-a-bang/5-ways-to-make-a-galaxy-with-no-dark-matter-7ed6fe6c9889 > On Mon, Apr 1, 2019 at 3:14 AM Eric Smith <desm...@santafe.edu > <mailto:desm...@santafe.edu>> wrote: > > In a way, this result is the one that could have been expected. There > are now lots of images from gravitational lensing that show “clouds” of DM > off-center from galaxies that we can see in the visible. This especially > happens when galaxies collide. So DM was behaving like matter already, and > it is not very surprising to see that maybe it could be all-but-stripped from > a galaxy, leaving only a scattering of visible matter. It would not surprise > me if at some point somebody can show that it was a long-ago collision that > did this stripping, and much later the diffuse ball of stars re-settled to an > ellipsoid. -- ☣ uǝlƃ ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College to unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com archives back to 2003: http://friam.471366.n2.nabble.com/ FRIAM-COMIC http://friam-comic.blogspot.com/ by Dr. Strangelove
