The case of the grown-up galaxy
May 20, 2010 by Pete Wilton
(PhysOrg.com) -- It seems, early on its life, our Universe was a place of extremes.
That’s the conclusion scientists are drawing from new infrared observations of a very distant, unusually bright and massive elliptical galaxy.
This galaxy [in the white square above] was spotted 10 billion light years away, and gives us a glimpse of what the Universe looked like when it was only about one-quarter of its current age.
Measurements show that the galaxy is as large and equally dense as elliptical galaxies that can be found much closer to us. Coupled with recent observations by a different research team - which found a very compact and extremely dense elliptical galaxy in the early Universe - the findings deepen the puzzle over how ‘fully grown’ galaxies can exist alongside seemingly ‘immature’ compact galaxies in the young Universe.
‘What our observations show is that alongside these compact galaxies were other ellipticals that were anything up to 100 times less dense and between two and five times larger - essentially ‘fully grown’ - and much more like the ellipticals we see in the local Universe around us,’ explains Michele Cappellari of Oxford University’s Department of Physics, an author of a report of the research in The Astrophysical Journal Letters.
‘The mystery is how these two different extremes, ‘grown up’ and seemingly ‘immature’ ellipticals, co-existed so early on in the evolution of the Universe.’
Elliptical galaxies, which are regular in shape, can be over ten times as massive as spiral galaxies such as our own Milky Way and contain stars which formed over 10 billion years ago. One way of checking the density of such galaxies is to use the infrared spectrum they emit to measure the spread of the velocities of their stars, which has to balance the pull of gravity.
Measurements of a distant compact elliptical galaxy have shown that its stars were dispersing at a velocity of about 500 km per second, consistent with its size but unknown in local galaxies.
The new study, using the 8.3-m Japanese Subaru telescope in Hawaii, found a ‘fully grown’ elliptical with stars dispersing at a velocity of lower than 300 km per second, much more like similar galaxies close to us.
‘Our next step is to use the Subaru telescope to find the relative proportion of these two extremes, fully grown and compact ellipticals, and see how they fit in with the timeline of the evolution of the young Universe,’ Michele tells us. ‘Hopefully this will give us new insights into solving this cosmic puzzle.’
More information: http://iopscience. … rg/2041-8205
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May 20, 2010
Rank: 1.4 / 5 (5)
a.) Dispersed to compact (H => He => C => . . . Fe => Neutron Star), or
b) Compact to dispersed (Neutron Star =(neutron-emission)=> N =(decay)=> H).
With kind regards,
OLiver K. Manuel
Emeritus Professor
Nuclear & Space Studies
Former NASA PI for Apollo
May 20, 2010
Rank: 1 / 5 (2)
May 20, 2010
Rank: 5 / 5 (2)
Doppler shift contradicts this.
The issue with that thought process is the fact that over time with the Universe expanding that distant objects would vanish from view rather easily and over relatively short timescales if they were reflections of our own or other known constructs.
May 20, 2010
Rank: 2.5 / 5 (2)
Yeah, figured as much, I do slightly question the doppler shift phenomenon. I do agree that our understanding of it is probably right, but we can really only say for certain that things 'appear' to be this way.
May 20, 2010
Rank: 2 / 5 (1)
May 20, 2010
Rank: 3 / 5 (2)
We know the universe is expanding, we know the speed of everything we look at, we know that further object move faster and are accelerating, we have mapped out great portions of the entire universe, etc..
With all this 'stuff' we've collected, can anyone tell we where we are in relation to the center of the universe, center is used under the assumption that the universe is somewhat spherical. I mean, are we on an edge, in the middle, about where? Or, is it possible that the universe is a hell of a lot larger than we think it is and we are limited in the 13.7 billion light year range? Is that as far as we can see, or is that really the edge of normal matter?
Also, if the universe is 13.7 billion light years across, then that had to be the case 13.7 billion years ago, right? so how big would it really be currently, say if you were a giant 1000 bigger than the universe? I suspect magnitude affects everything, this property has been ignored.
May 20, 2010
Rank: 3.5 / 5 (2)
May 20, 2010
Rank: 3.5 / 5 (2)
May 20, 2010
Rank: 1 / 5 (2)
Oh man we have a long way to go, so primitive are we I suspect highly these barriers we currently face such as light speed and black whole theory are nothing more than a facade, perhaps evolutionary tests set forth by the great creator, if there is one, to evolve our intellect.
May 20, 2010
Rank: 1.6 / 5 (7)
May 20, 2010
Rank: 5 / 5 (4)
Flat universe: http://en.wikiped...universe
Age of universe: http://en.wikiped...universe
(These topics have been discussed here many times before, hence the links. Answers to these two questions are not that hard to find!)
May 21, 2010
Rank: 1 / 5 (2)
Halton Arp had the answer.
Redshift is partiality an indicator of age not distance.
May 21, 2010
Rank: 1 / 5 (6)
Assume galaxy A gets created at time t=0 at a distance L="2 light days" from earth.
Assume earth lies near the centre of the universe and hence relative to galaxy A is deep inside a gravity well.
Then the universe gets expanded spherically outwards from the centre.
This produces redshift as seen from earth.
Furthermore during the expansion energy gets converted to matter and Galaxy B gets created well within the vicinity of Galaxy A.
Now as the expansion proceeds, time passes much faster in the vicinity of Galaxy A and B relative to earth. Fast enough that light from B can reach earth in our time frame.
But galaxy B would then still be younger than Galaxy A whilst both appearing at relatively the same distance from earth, in this case at 10 Billion light years.
This would also mean that no matter how deep we look into space we'll find the same mature/younger pattern of galaxy formation.
Just a thought. Kick it around as U like
May 21, 2010
Rank: 1 / 5 (6)
This would then tend to debunk the idea of looking everywhere and finding thing looking the same.
Besides which the universe has now clearly been shown to have galaxies in definite structured pattern, not one smooth uniform dispersion.
The newer findings from the SDSS and WIMP efforts would indicate that the universe might have a polar axis. So going with the patterns we've found all around us so far, it would not be too far fetched to imagine that the universe is spinning about a polar axis. This might just also help account for different valus of redshift seen in quasars since redshift can also be observed in object moving tangentially relative to the observer.Kick2.
May 21, 2010
Rank: 5 / 5 (5)
Just one question for you: who died and made Earth the center of the universe?
Geocentrism is just soooooo Dark Ages, mate... Welcome to the 21st century, and get with the program!
May 21, 2010
Rank: 1 / 5 (6)
I'm somewhat dissappointed at your reply. I was expecting a more considered comment from you of all people.
If you follow the evidence gathered so far and consider what it implies you'll surely come to the same conclusion as I've done above.
If however you allow philosophical notions to overrule your thoughts you'll reply as you did.
I didn't say earth is at the centre of the Universe, I said it's NEAR the centre for the simple reason that if it were not, we wouldn't be able to see quantization patterns in the redshift measurements. This can be shown mathematically.
If there isn't dissenting voices within the program, soon new ideas would die a quiet death.
Anyway, I did invite people to kick it around so I suppose kicking me around goes with it!!! Have fun while you're at it ;-)
May 21, 2010
Rank: 1 / 5 (5)
I was rather hoping you'd come up with your own explanation for how it is that these galaxies are mixed up like this. That would have spawned much greater fruitful discussion than simply shooting mine down.
So how do you explain why there are mature and young galaxies so close together in the early universe?
May 21, 2010
Rank: 4.7 / 5 (6)
The redshift quantization thing is old and debunked.
There is no center of the universe, since the universe is presumably infinite in extent (or at least that's the simplest assumption, until some empirical datum contradicts it), and no location in space is privileged in any way. This total equivalence of all inertial reference frames, incidentally, is at the heart of the theory of Relativity.
As for anomalous maturity being observed a long time ago in a galaxy far, far away... Well, it did have about 3.5 billion years or so, since the Big Bang, to achieve its observed state. And perhaps it indicates a particularly dense clump of dark matter, or a particularly violent blip in pre-inflation quantum foam, or maybe just a plain old statistical outlier (sample a few billion galaxies, and you're bound to find a couple oddballs.) As the article mentions, further observation and tallying is warranted...
May 21, 2010
Rank: 1.3 / 5 (6)
So at least we agree that right now anyone's guess is as good as the next until more information becomes available. Hence I'll happily stick with mine. It has a nice simplicity to it that rings with my simple mind.
Dark matter and dark energy sounds just too much like the problem that occurred with trying to explain mercury's orbit not so long ago - until the theory of relativity showed there was a better explanation.
I'm excitedly waiting to see how this pans out. Pity it'll probably take a few years to get more information [ unless someone is able to automate these observations and a computer spews out data like a fountain ].
Have fun and don't stray too close to any dark matter - it might just annihilate you!
May 21, 2010
Rank: 5 / 5 (4)
That isn't what he's saying. He's saying "we're not sure", not "anything is possible". and as an aside, there is no center to the Universe.
May 21, 2010
Rank: 5 / 5 (5)
Would that be in the northern part of the universe or the southern?
Kidding aside, the notion of a center of the universe is akin to talking about the center of the surface of the Earth. Just where is the center of the surface of the Earth?or the surface of a sphere? Sort of a non-starter (as is, BTW, quantization of redshifts).
Just a thought. Kick it around as U like.
May 21, 2010
Rank: not rated yet
Take a rubber sheet, like a balloon. Draw some dots on it randomly. Blow it up. Measure the change in distance from dot to dot on the balloon as the balloon expands.
Everything moves, not just the "center". The Universe is like this according to observation and theory. Space isn't being created, it's stretching.
May 21, 2010
Rank: 1 / 5 (7)
http://www.pitt.e...ples.jpg
Note that the same effect appears like if the source would be surrounded by dense "dark" matter, which slows down the waves around their source. The very same model therefore explains both omnidirectional expansion of space-time, both dark matter.
May 21, 2010
Rank: 1 / 5 (7)
For example, the Pioneer anomaly attributed to dark matter manifests by weak deceleration, the value of which is given by product of Hubble constant and speed of light with some 10 percent error. I presume, this is not just a coincidence.
a = (8 +- 1) x 10^{-10} meters/second^2 = H x c
Two spacecrafts (Pioneer 10 and Pioneer 11) were launched in 1972 and 1973. Nevertheless, the radio measurements of the position of the spacecrafts during the last years of their existence seem to show that there is the week decceleration towards the Sun.
http://en.wikiped..._anomaly
In this way, the Pioneer anomaly could become the first experimental test of both concept of statical Universe, both dense aether theory. A similar decelleration was observed later for another spaceprobes at sufficient distance from Sun.
May 22, 2010
Rank: 5 / 5 (3)
May 23, 2010
Rank: 1 / 5 (2)
Maybe we would be looking at our images in the past, repeated millions of times, and that space topology could explain the red shift, and the strange rotation of the galaxies that we blame on dark matter.
In such topology, light energy should diffuse over time
May 23, 2010
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So you're saying the Universe is just wicked awesome at lazertag? Don't get stoned before you post. It isn't helping your understanding of the content.
Dave's not here man.
May 23, 2010
Rank: 1 / 5 (1)
My English is bad. I mean I ask. Is unnecessary to be non-respectful.
May 23, 2010
Rank: 5 / 5 (1)
May 23, 2010
Rank: 1 / 5 (1)
Don't pretend that my English is justification for your behavior.
May 23, 2010
Rank: not rated yet
If you wrote what you meant it's not your English that allows for ridicule, but the content. If you wrote and became confused because of some language barrier, follow frajo's instructions so we can get your actual meaning.
I believe it to be the former not the latter, and you're trying to insinuate racism.
May 23, 2010
Rank: 1 / 5 (2)
Even more aggression?
You turned a discussion on physics into an personal attack. You insinuated that I are on drugs ("stoned"), and now you attack me again ("insinuate racism").
I recommend you to read the Comments Guidelines. And I hope that this web site honor those guidelines.
May 23, 2010
Rank: not rated yet
No, you turned a discussion on physics into a weird philosophical statement on the mechanics of light, and as such you're promoting pseudoscience. No, those are not attacks, those are statements of observation.
If they do your pseudoscientific statements will be removed. Please do try to grow up and when engaged in debate, please bring some logic and talking points with you. Pseudoscience deserves ridicule. Sorry you feel it doesn;t.
May 23, 2010
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May 23, 2010
Rank: 1 / 5 (1)
Sorry, I mean the user named Skeptic_Heretic behavior. I don't mean your behavior, Frajo, and apologize.
I tried to edit, but my computer rebooted and the time to edit expired.
May 23, 2010
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May 23, 2010
Rank: 1 / 5 (2)
You offend me again. You don't have any "observation" that my comment on universe topology is consequence of drugs.
May 23, 2010
Rank: 1 / 5 (4)
http://www.pitt.e...ples.jpg
Therefore the key for understanding of omnidirectional expansion of space-time with distance we can find on the surface of every pool... (after all, in the same way, like the explanation of at least dozen of another well known phenomena, which contemporary physics cannot explain in transparent & consistent way).
Don't feed the arrogant trolls, who are only want to fragment discussion - just use a "report abuse" link. After all, this is why such feature exists here.
May 23, 2010
Rank: not rated yet
Hubble's doppler shift showing alternate wave length changes over time of like object shows that you must be incorrect as mathematically it doesn't work. Now if you hadn't been ripping the bong, and actually read anything about cosmology, you'd be typing what I'm typing and probably telling it to another who came up with a similarly ignorant idea.
No, no one can see that because it isn't true.
May 23, 2010
Rank: 1 / 5 (1)
As I understand, the expansion of the universe increases the wavelength of light, thus distributing the energy, and reducing the amplitude.
Nonetheless, experimental data do not match exactly the theory of the expansion, so it requires an extra element, which is possibly the dark matter and energy.
I wonder about the possibility to explain it with an extra curvature on space. If we discard that we occupy a special place on the universe, that curvature should act like a lens, increasing the perceived size of far galaxies, and thus misleading us into believing that they rotate faster than in reality.
That effect also should reduce the wavelength of far galaxies light.
If the universe were “round” (closed), then we should be able to observe periodic structures on the universe.
May 23, 2010
Rank: 1 / 5 (3)
Ancient civilization described this geometry by Ouroboros archetype, whereas modern physics talks about Mobius loop or Klein bottle geometry, instead. For example the electron can be described by Mobius loop of standing photon wave.
http://members.ch...tron.pdf
In this way, the energy travels inside of electron in the same way, like the light through the whole observable Universe and dense aether theory makes such understanding rather trivial.
May 23, 2010
Rank: 5 / 5 (1)
That is contrary to observation, as is everything Alizee suggests.
May 23, 2010
Rank: 1 / 5 (1)
"Nope, both wavelength, both amplitude changes with distance, as everyone can see"
should be had posted as a quote.
This web page is crashing my Firefox 3.6.3
Sorry for the confusion.
May 23, 2010
Rank: 1 / 5 (2)
It only confuses XML parser by some non-ascii characters. It's your private problem only, as these characters are filtered out from the thread automatically for future.
Just hit the refresh button and continue in posting. I'm using the very same version of browser without any problem here.
May 23, 2010
Rank: 1 / 5 (4)
Briefly speaking, our space-time appears nonlinearly curved from the same reason, by which the ripples are nonlinearly dispersing at the water surface.
This effect is strictly relative, though - it means, some remote observer would see our portion of Universe red-shifted and curved in the same way, like we can see the remote parts of Universe. From general perspective of gravitational waves in extra-dimensions (..which is unfortunately unavailable for us, tiny creatures..) our part of Universe would probably appear nearly as flat, like the water surface.
Of course, this model has an incredible number of testable cosmological implications. It could change the whole way, which we are looking at the Universe.
May 23, 2010
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May 23, 2010
Rank: 1 / 5 (2)
Einstein (attributed): "If the facts don't fit the theory, change the facts".
May 23, 2010
Rank: 5 / 5 (2)
That isn't a statement by Einstein. That is a statement attributed to Einstein by Ray Comfort. Also known as banana man for his ridiculous insistence that Bananas, the most modified fruit man kind has domesticated, was engineered for human use by god.
Start here http://helios.gsf...ems.html
I'm starting to think you were homeschooled, or perhaps unschooled like that wacko family in Massachusetts I heard about last year.
May 24, 2010
Rank: 1 / 5 (1)
Anyway, can you link some source of redshift observed for distant radiowave source?
May 24, 2010
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Without further evidence, you shouldn't have used it as a reference at all.
May 24, 2010
Rank: 1 / 5 (2)
http://helios.gsf...ems.html
I found nothing, which could support your stance.
Touching, but this is not an evidence of your claim "all observations indicate a total redshift in all spectra of received EM".. In fact, you still didn't linked any, which could refute my prediction. You're just a crackpot, admit it.
May 24, 2010
Rank: 5 / 5 (1)
May 24, 2010
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"all observations indicate a total redshift in all spectra of received EM of relative "fixed" objects."
You intentionally left off the most important part of the statement. Example: Andromeda is showing a blue shift, because it is fast approaching. I would be wrong according to your quote. I am correct according to mine.
Grow up.
Aside from that, if EM worked as you say it did all airplanes in the sky better look out, because the ground stations CANNOT track them since all doppler radar systems have it backwards.
Seriously, this is basic understanding. What is your educational pedigree?
May 24, 2010
Rank: 1 / 5 (3)
Because it's not a theory - just an apparent lie, not supported by any evidence.
May 24, 2010
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So you think that the Doppler effect, which we use in many aspects of modern technology, is a lie.
You better not use anyhting that relies on radar, sonar, GPS, or any form of satelite, since those must all be lies as well.
May 24, 2010
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May 24, 2010
Rank: 1 / 5 (2)
(link 1, link 2 should be placed bellow)
May 24, 2010
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and the Theory of Electromagnetivity http://en.wikiped...agnetism
Seriously, go read something, what you're proposing is totally intellectually vacant for someone who claims to have a grasp of physics.
May 24, 2010
Rank: 1 / 5 (3)
You told me today, you're a member of AAAS. Are you definitely sure, you're helping science and reputation of physicists by now?
May 24, 2010
Rank: 4 / 5 (1)
Being a member does not mean their reputation is riding on you. If that was the case I doubt Physorg would allow you to have 1 account, let alone the 15 you do have now.
May 24, 2010
Rank: 1 / 5 (3)
It's as easy as it it. Whole history of science was followed by proponents of new ideas and by their fierce opponents - and you're just one of them.
May 24, 2010
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Or perhaps the paranoia is getting to you. You're showing signs 1 and 3 of crackpotism. Nice link, thanks for showing me that earlier. Paranoia, and conspiracy theories about an established institutional blacklisting.
May 24, 2010
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I'm sorry Alizee, you are not God, nor is God even God. The Universe isn't magic. Pythagoras didn't slaughter oxen as a sacrifice to learn the pythagorian theory. Most historians doubt pythagoras contributed to mathematics at all. He was a philosopher who primarily dealt in religion and nature. If pythagoras was responsible for the theorem, he developed it through philosophical science, as was quite common before we had industrial standards of measure, and later, atomic standards of measure.
May 24, 2010
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May 24, 2010
Rank: 1 / 5 (3)
Whereas for example Mr. Galileo supported the heliocentric model by order of Venus phases - such observation cannot be explained by another way, then just by heliocentric model. Therefore such bilateral connection not connected to another factors can serve as a the most robust evidence of theory.
May 24, 2010
Rank: 1 / 5 (2)
The refusal of theories isn't so free league, as many people believe. It has it's own rules, too.
May 24, 2010
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"If it correlates to two point only, it is better than correlating to many points. I think global warming is a scam so let's use that as an example. If I can prove something more fully, it makes less sense than if I can only prove pieces of it."
Post 2:
"I'm saying random things to sound impressive because I think I am impressive therefore I am indeed, impressive." *sips mountain dew in a dark lonely basement*
Post 3: "LaLALALALA I CAN'T HEAR YOU".
Thank you for using Alizee translation servicesae, where the extra ae is for Aether.
May 24, 2010
Rank: 5 / 5 (2)
May 24, 2010
Rank: 1 / 5 (3)
Or do you really believe, true oxen could recognize the moment, when a new truth will emerge? In this connection the question whether some Pythagoras has existed at all is completely irrelevant.
May 24, 2010
Rank: 1 / 5 (3)
The people can explain or even model the spreading of waves through elastic particle environment, where the model fits observation well - but which theory ever attempted for explanation of these same behavior for light waves in vacuum?
May 24, 2010
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May 25, 2010
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May 25, 2010
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May 25, 2010
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