NASA's Hubble Finds Most Distant Galaxy Candidate Ever Seen in Universe

quoted:

The tiny, dim object is a compact galaxy of blue stars that existed
480 million years after the big bang.

There was also a recent news article about a green patch in a
gravitational accretion zone created by the movements of a cluster of
galaxies. Small gravitational gradients were enough to cause large gas
clouds to start collapsing to form galaxies on a large scale, stars on a
medium scale, comets on a small scale.

More than 100 such
mini-galaxies would be needed to make up our Milky Way ....

That fits with recent simulations that large galaxies spiral and bigger
were assembled by merging a lot of smaller dwarf galaxies. I wonder
what this implies about the large black holes at so many galatic cores.
Why would they all have merged to form single ones in the center? Cores
should have a lot of large black holes not a single one based on this
model of galactic evolution.

This observation was made with the Wide Field Camera 3 starting just a
few months after it was installed in the observatory in May 2009,
during the last NASA space shuttle servicing mission to Hubble. After
more than a year of detailed observations and analysis, the object
was positively identified in the camera's Hubble Ultra Deep
Field-Infrared data taken in the late summers of 2009 and 2010.

Here's something I like -

Astromoners figured out something to look for that had meaning. THey
searched in the existing data for it and they found it.

How many other lessons are to be found in the existing data? One view
of science is that someone proposes a way to tell order from chaos and
when they apply their suggestion to the data it works. From then on
science evolves the model and/or revolts against the model by proposing
competing models that explain the data better. The key event is the
first conversion of random data into ordered data by the first model.

The proto-galaxy is only visible at the farthest infrared wavelengths
observable by Hubble. Observations of earlier times, when the first
stars and galaxies were forming, will require Hubble's successor, the
James Webb Space Telescope (JWST).

Nice, infrared telescopes. I started my career doing ground link
software on the original InfraRed Astromony Satellite. Fortran on a
mainframe back in the time of yore.

"After 20 years of opening our eyes to the universe around us, Hubble
continues to awe and surprise astronomers," said Jon Morse, NASA's
Astrophysics Division director at the agency's headquarters in
Washington. "It now offers a tantalizing look at the very edge of the
known universe -- a frontier NASA strives to explore."

So much data. More potential for figuring out stuff to look for and
then finding it in the existing images.

Doug Freyburger wrote:

That fits with recent simulations that large galaxies spiral and bigger
were assembled by merging a lot of smaller dwarf galaxies. I wonder
what this implies about the large black holes at so many galatic cores.
Why would they all have merged to form single ones in the center? Cores
should have a lot of large black holes not a single one based on this
model of galactic evolution.


Large Black Holes (LBH's) orbiting around each other. Spiraling slowly in
towards each other. Thinking about the matter trapped between. Getting ejected
out into space? An explanation for galactic sized jets?

Dave

David Spain wrote:
Doug Freyburger wrote:

That fits with recent simulations that large galaxies spiral and bigger
were assembled by merging a lot of smaller dwarf galaxies. I wonder
what this implies about the large black holes at so many galatic cores.
Why would they all have merged to form single ones in the center? Cores
should have a lot of large black holes not a single one based on this
model of galactic evolution.

Large Black Holes (LBH's) orbiting around each other. Spiraling slowly in
towards each other.

I wonder that the spiralling in part. Two black holes would orbit each
other or be at mutual escape velocity. It would take 3+ for any 2 to
collide. To me that suggests that there are a *ton* of gigantic black
holes out in intergalatic space. Dozens per sizable galaxy. Hundreds
for the large ones. A 2 body problem that results in the collision of 2
also results in the escape of 1 so they can't be the centers of globular
clusters.

Thinking about the matter trapped between. Getting ejected
out into space? An explanation for galactic sized jets?

A star ripped apart would do that. It would take ripping apart a lot of
stars for the jet to last.

Doug Freyburger wrote:
A star ripped apart would do that. It would take ripping apart a lot of
stars for the jet to last.

I get the feeling I wouldn't want to be a close observer....

;-)

Dave

David Spain wrote:
Doug Freyburger wrote:

A star ripped apart would do that. It would take ripping apart a lot of
stars for the jet to last.

I get the feeling I wouldn't want to be a close observer....

;-)

Where close is measured in tens or hundreds of parsecs. What's the best
way to watch a supernova? With a telescope in a different galaxy!
Ripping a star apart like that would be far worse than a supernova.

Doug Freyburger wrote:
Where close is measured in tens or hundreds of parsecs. What's the best
way to watch a supernova? With a telescope in a different galaxy!
Ripping a star apart like that would be far worse than a supernova.

Let us hope all such instances are (and remain) appropriately red-shifted....

Dave

David Spain wrote:
Doug Freyburger wrote:

Where close is measured in tens or hundreds of parsecs. What's the best
way to watch a supernova? With a telescope in a different galaxy!
Ripping a star apart like that would be far worse than a supernova.

Let us hope all such instances are (and remain) appropriately red-shifted....

In Larry Niven's "Tales of Known Space" science fiction universe the
Milky Way has gone Seifert and the shock wave will arrive in about 20K
years. This is something I very much want to see exclusively from far
enough to have a large red shift. Reading about it in new novels in an
SF franchise (I have been going through the Ring World prequel novels
recently, recommended) is one thing. Dying of radiation poisoning along
with all of the rest of life on the planet is very much another thing.

On 1/31/2011 9:21 AM, Doug Freyburger wrote:

In Larry Niven's "Tales of Known Space" science fiction universe the
Milky Way has gone Seifert and the shock wave will arrive in about 20K
years. This is something I very much want to see exclusively from far
enough to have a large red shift. Reading about it in new novels in an
SF franchise (I have been going through the Ring World prequel novels
recently, recommended) is one thing. Dying of radiation poisoning along
with all of the rest of life on the planet is very much another thing.

My pet worry is that the core of our galaxy is going to eject a giant D
cell battery just like the core of the Andromeda Galaxy will in the
distant futu http://www.plan59.com/av/av042.htm
We are going to need all the uranium we can find if that occurs to power
our Orion generation ships to flee the Milky Way Galaxy.

Pat