http://www.starstryder.com/2008/01/08/blue-blobs-splat-on-the-sky/ Blogging one sidereal day at a time Thu, 11 Mar 2010 13:13:21 -0400 http://wordpress.org/?v=2.8.6 hourly 1 http://www.starstryder.com/2008/01/08/blue-blobs-splat-on-the-sky/comment-page-1/#comment-22741 Richard B. Drumm Wed, 09 Jan 2008 04:17:47 +0000 http://www.starstryder.com/2008/01/08/blue-blobs-splat-on-the-sky/#comment-22741 I saw one of the blue blobs over on Phil's site an hour ago and thought "That's pretty!" IIRC, M81 is one of the very few galaxies that appear -NOT- to have significant quantities of dark matter. I wonder how that might play into the tidal stream formation. I wonder if tidal tails elsewhere have dark matter components (which we can't see, of course) and the M81/82 tail would be dark matterless (or partially dark matterless). I wonder if the baryonic matter we see there is from M81 or M82 originally. M82 looks like such a tortured place I've taken to calling it "The Exploding Cigar Galaxy" !!! :lol: Rich I saw one of the blue blobs over on Phil’s site an hour ago and thought “That’s pretty!”
IIRC, M81 is one of the very few galaxies that appear -NOT- to have significant quantities of dark matter. I wonder how that might play into the tidal stream formation. I wonder if tidal tails elsewhere have dark matter components (which we can’t see, of course) and the M81/82 tail would be dark matterless (or partially dark matterless). I wonder if the baryonic matter we see there is from M81 or M82 originally.
M82 looks like such a tortured place I’ve taken to calling it “The Exploding Cigar Galaxy” !!!
Rich

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