turbo-1 said:Nice catch! Hmmm...we have already seen "young" distant galaxies (z~6) populated by old red stars with high metallicities, and now we have evidence that old mature galaxies like the MW and Andromeda may contain dense central disks composed of very hot (blue) young stars.
A Steady-State universe could easily be reconciled with such observations.
He may not have one; do you? It seems that this relatively "new" information remains unexplained by the researchers as the article says, in part:SpaceTiger said:Oh really? Please share with us your explanation for the young stars around the SMBHs.
Why would you expect a PF poster to already know what Lauer and others are staying up untill 2:00 AM scratching thier heads about? Sometimes your sarcastic, one-liner posts are not as appreciated as you might think. And, mine aren't either!The new observations also provide clinching evidence that Andromeda's central dark object is a black hole and not something else. It packs a mass of 140 million suns, the new study finds.
Ultimately, the strange goings-on in Andromeda may turn out to be commonplace.
"The dynamics within the core of this neighboring galaxy may be more common than we think," Lauer said. "Our own Milky Way apparently has even younger stars close to its own black hole. It seems unlikely that only the closest two big galaxies should have this odd activity. So this behavior may not be the exception but the rule. And we have found other galaxies that have a double nucleus."
rtharbaugh1 said:Way down there at Galactic Central the stars look young and hot and blue and fast. Up here where time is slow, our stars seem old and calm and yellow. Time is not the same. Is there a connection?
Labguy said:He may not have one; do you?
turbo-1 said:A Steady-State universe could easily be reconciled with such observations.
Sometimes your sarcastic, one-liner posts are not as appreciated as you might think. And, mine aren't either!
pervect said:Not according to current theory. The closest stable circular orbit around a black hole is at R=6M. The time dilation factor there due to the black hole is only 1.22 (this follows from the metric coefficient g_00, which is 2/3). Bascially there's no plausible way to get a very large time dilation factor.
I defer. I am patient and would like this and similar threads to survive. I am not a Fred Hoyle adherent, and I think that he and and other observational astronomers of his day might have missed a critical point or two. I am, however, firmly convinced that the Universe is a whole lot simpler than we imagine at its basics, and a whole lot more complex in its expression.Phobos said:[moderator hat]
Note: Discussion of the article is ok, but a deeper debate about a Steady State model should be presented to the Independent Research forum.