Hubble sees a spiral within a spiral

May 28, 2012
Credit: ESA/Hubble & NASA

(Phys.org) -- NASA's Hubble Space Telescope captured this image of the spiral galaxy known as ESO 498-G5. One interesting feature of this galaxy is that its spiral arms wind all the way into the center, so that ESO 498-G5's core looks like a bit like a miniature spiral galaxy. This sort of structure is in contrast to the elliptical star-filled centers (or bulges) of many other spiral galaxies, which instead appear as glowing masses.

Astronomers refer to the distinctive spiral-like bulge of galaxies such as ESO 498-G5 as disc-type bulges, or pseudobulges, while bright elliptical centers are called classical bulges. Observations from the , which does not have to contend with the distorting effects of Earth's atmosphere, have helped to reveal that these two different types of galactic centers exist. These observations have also shown that is still going on in disc-type bulges and has ceased in classical bulges. This means that galaxies can be a bit like Russian matryoshka dolls: classical bulges look much like a miniature version of an , embedded in the center of a spiral, while disc-type bulges look like a second, smaller located at the heart of the first — a spiral within a spiral.

The similarities between types of galaxy bulge and types of galaxy go beyond their appearance. Just like giant elliptical galaxies, the classical bulges consist of great swarms of stars moving about in random orbits. Conversely, the structure and movement of stars within disc-type bulges mirror the arrayed in a galaxy's disc. These differences suggest different origins for the two types of bulges: while classical bulges are thought to develop through major events, such as mergers with other galaxies, disc-type bulges evolve gradually, developing their spiral pattern as stars and gas migrate to the galaxy’s center.

ESO 498-G5 is located around 100 million light-years away in the constellation of Pyxis (The Compass). This image is made up of exposures in visible and infrared light taken by Hubble’s Advanced Camera for Surveys. The field of view is approximately 3.3 by 1.6 arcminutes.

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User comments : 8

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Tuxford
1 / 5 (6) May 29, 2012
Again, looks like a pinwheel firework. But no, it just can't be.....it can't, it can't, it can't.....Whew! That was close.

http://phys.org/n...eel.html

This structure is not a problem if new matter is ejected preferentially along from the poles of a slowly rotating core, seeding the galaxy from within, growing from the inside out.

http://phys.org/n...ace.html
kevinrtrs
1 / 5 (10) May 29, 2012
[
These observations have also shown that star formation is still going on in disc-type bulges and has ceased in classical bulges.
If you don't have a clue as to how stars can form, how on earth can you make such a definitive statement as this one?
The researchers clearly assume that the phenomena they're observing is one of star formation - but they have no supporting evidence for it because no one understands how stars form in the first place. This kind of assumption is definitely not scientific, in fact it borders on pseudo-science. The statement was made based on a certain theory but the theory has no substance to it, hence the statement was made purely on faith.
barakn
not rated yet May 29, 2012
Often you can tell a crank by the company he keeps.
jsdarkdestruction
5 / 5 (5) May 29, 2012
since tuxford has felt the need to promote laviolette's theory in every astronomy article possible i feel i should show just what it is we are dealing with when it comes time to consider laviolettes cosmological theories.
here are some works from tuxfords idol laviolette, it illustrates how based in reality his worldview really is.this is a book he wrote.
First time proof of the existence of interstellar radio signals of intelligent origin being sent to us.
Evidence that pulsars are part of a vast network of ETI communication beacons.
This exhaustive study presents first time proof that astronomers have been receiving radio signals of intelligent origin. As early as 1967 and continuing to the present, radio astronomers have been carefully studying and cataloging unusual interstellar beacons called pulsars thinking them to be stars of natural origin.Dr. LaViolette, who has been researching pulsars for 27 years, shows that, up to now, the nature of these radio sources has been grossly
jsdarkdestruction
5 / 5 (5) May 29, 2012
misunderstood. He has discovered that a number of very unique pulsars are nonrandomly distributed in the sky and mark key Galactic locatations that have particular significance from an ETI communication standpoint. He also presents evidence of unusual geometric alignments among pulsars and intriguing pulse period relationships. Equally compelling is the message they are sending-a warning about a past Galactic core explosion disaster that should help us avert a future global tragedy.

Contains extensive analysis of pulsar data, revealing new ideas about the origins and functions of pulsars

Provides proof of an extraterrestrial communication network

Includes information about the formation of crop circles and force-field-beaming technology
jsdarkdestruction
5 / 5 (5) May 29, 2012
see, this is what i mean about science fiction fantasy based worldview that laviolette employs in his cosmological theories. and all the others fields of science he's claimed to make breakthroughs in because of it while having no training in the fields he claims to have proven wrong.
Terriva
1 / 5 (5) May 29, 2012
Hubble sees a spiral within a spiral
This is not the first evidence of fractal character of galaxies, which fits the dense aether model well. Before some time I noted, that the density fluctuations inside of massive galaxies are similar to the fluctuations of dark matter between galaxies. The galaxies are forming the nodes of dark matter foam and the stellar clusters inside of galaxies could form them too. They all should share the structure of nested dodecahedrons, corresponding the hypersphere packing geometry of Lie E8 group.

rubberman
5 / 5 (3) May 30, 2012
"If you don't have a clue as to how stars can form, how on earth can you make such a definitive statement as this one?"

Perhaps stars are just Gods snowballs. He wanders through space looking for good packing "snow" and when he finds stuff that's just right him and jesus have at it, a supernova occurs when jesus beans God in the head....

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