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Old 02-12-2010, 08:10 PM
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CraigS
Unpredictable

CraigS is offline
 
Join Date: Jul 2010
Location: Australia
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Quote:
Originally Posted by Robh View Post
OK, so now we are discovering there are lots more of these red dwarfs.
But just how many brown dwarfs are out there? Maybe we can pack some more mass into these galaxies.

Regards, Rob
I haven't had a look at how much dark matter they currently reckon is in one of these ellipticals, but I have a feeling its a big amount.

For example, dwarfs are mostly elliptical. These galaxies are presently believed to be DM dominated, in a big way .. I think about >10:1 DM:matter ratio.

These guys are reporting that ellipticals contain up to 20 times the previously thought number of red dwarfs .. similar orders of magnitude, at least !

I noted from Rob's earlier post that the paper causing all of this, is presently resulting in a lot of controversy amongst the establishment. I guess there'll be a lot of fallout from this study.

Cheers
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