Ghostly giants versus huge dwarves - the battle continues
Ultra-diffuse galaxies are currently the trendiest thing in extragalactic astronomy. The same size as the Milky Way but a thousand times fainter, these things may be extremely boring to look at but they break all the rules of galaxy formation. Or do they ? Two years after first hitting the headlines, I review the current state of the art on the most important question : how massive are they ? Are they actually just huge dwarves or are they genuinely ghostly giants ? What have we really learned so far and where are we going ?
With star-studded cast of a giant squid, Father Ted, Gimli, Ghostbusters and for some reason James Corden...
Placeholder post intended to be replaced with a better summary.
Subscribe to:
Post Comments (Atom)
-
Of course you can prove a negative. In one sense this can be the easiest thing in the world : your theory predicts something which doesn...
-
In the last batch of simulations, we dropped a long gas stream into the gravitational potential of a cluster to see if it would get torn... -
Why Philosophy Matters for Science : A Worked Example "Fox News host Chris Wallace pushed Republican presidential candidate to expand...
No comments:
Post a Comment