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Newly Discovered Young Galaxy Creates 4,000 Stars Per Year
Astronomers using NASA's Spitzer Space Telescope have found a galaxy producing an average of up to 4,000 stars per year. They contrast this with the Milky Way, which only produces an average of 10 each year. Nicknamed "Baby Boom," it is a young starburst galaxy, and its stellar birth rate conflicts with a commonly accepted model for the growth of a galaxy. Quoting:
"'The question now is whether the majority of the very most massive galaxies form very early in the universe like the Baby Boom galaxy, or whether this is an exceptional case. Answering this question will help us determine to what degree the Hierarchical Model of galaxy formation still holds true,' [said Peter Capak of NASA's Spitzer Science Center] 'The incredible star-formation activity we have observed suggests that we may be witnessing, for the first time, the formation of one of the most massive elliptical galaxies in the universe,' said co-author Nick Scoville of Caltech, the principal investigator of the Cosmic Evolution Survey,
"Rare 'Star-Making Machine' Found in Distant Universe" is the title of it, on NASA's website. The first paragraph makes it clear that it's intended to be "in the distant reaches of the universe," but it's still strange phrasing. Really got my hopes up there for a bit.
Also, to be more specific, this Galaxy was creating 4,000 stars per year 12.3 Billion years ago, when the universe was only 1.3 Billion years old. Also, they don't know the number to be 4,000 stars: it's in the range of 1,000 to 4,000 stars per year, based on how bright it is.
Everything is subjective.
If general relativity says that a clock ticks faster the deeper it is in a gravity well, and at the beginning of the universe all that matter was closer together, maybe time just flew faster for star formation. Was the value of "year" used in the article, to put a new spin on an old phrase, adjusted for inflation?
Older galaxies are outsourcing their star production needs to this one.
That's faster than American Idol!
Have gnu, will travel.
"My God, it's full of stars!"
-- Boycott Shell
If I read the article right, this would seem to say that we are witnessing this galaxy forming approximately 12.3 billion light years ago. As to the answer of whether or not this galaxy is exceptional, I guess the most interesting answer may be if this galaxy is 'currently' producing stars at the same rate as the Milky Way (~10 per year). Unfortunately, the only way I can see to figure that out is to wait another 12.3 billion years. I don't know about you guys, but I'm starting stocking up on beer now.
They contrast this with the Milky Way, which only produces an average of 10 each year.
I live in the most boring galaxy!
It's only delaying the inevitable...
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2. ???
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IIRC, that model works like quantum tunneling and would require the speed of light to drop everywhere in the universe at the same moment without decelerating to the lower velocity. I think I read somewhere that if that happened, (and IMHO the model makes a lot of sense, but I don't care one way or the other) you wouldn't be able to see it, since everything slows down relative to everything else. However, you could see the difference if you compared the speed of light to previously known values.
As an aside, I have read in a few different places that there is some evidence that the speed of light is exponentially decaying.
If I mod you up, it doesn't necessarily mean I agree with what you've said, sorry.