1387053
story
Jared writes:
"A story at space.com reports that new research indicates that black hole formation is tied directly to the amount of mass in a galaxy's central bulge, an ancient and dense sphere of stars that populates the central regions of many galaxies, including our own Milky Way."
3,000 * our Sun = Puny. (Score:1)
"One of the new studies, led by Rutgers University Professor David Merritt, found that if (Galaxy) M33 contains a black hole, it is not more than 3,000 times the mass of our Sun."
"Gebhardt refers to these possibly numerous groupings of stars as "very puny disk-only galaxies." Some researchers think there may be more of them in the universe than any other type of galaxy. And so if they in fact do not harbor black holes, then galaxies with black holes would be in the minority."
The jury is in! We know nothing conclusive about the universe! (Or why goatse.cx is so popular a troll spot.)
Re:Resampling (Score:1)
Good to hear VLTI is doing so great!
Re:Resampling/Drizzle (Score:1)
Resampling (Score:3)
Hm, claims of improvement in spatial resolution always makes me veeeery skeptical. Unless they can prove that the resampling technique works, by showing that it correctly reproduces an image taken with higher resolution, I just don't believe it. And with galaxies and with the HST (that has pretty much the best resolution right now (until optical interferometers get into "everyday" use)), you can't do that.
That doesn't mean I reject this study, but I would view it with additional skepticism.
Re:Resampling/Drizzle (Score:1)
Grtz
Bjorn
Re:Resampling (Score:2)
Bjorn Heijligers
http://www.heijligers.com
Re:Resampling/Drizzle (Score:2)
If i remember correctly they not only move the telescope but also rotate the ccd with a 45 degree angle with respect to the first image, which gives the best result..
The algorithm that does this is called "Drizzle" and is now a very standard technica. (students down the hall here are doing it right now at the Leiden Observatory here
I think i have heard something about a new ccd, but i'm not at all sure how soon that would be..
The first light (fringes) of the VLTI can be found here:
http://www.eso.org/outreach/press-rel/pr-2001/p
(I actually spend 2 months programming one of the microcontrollers on the carriage you can see on one of the images)
Grtz
Bjorn