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Astronomers Obtain Highly Detailed Image of the 'Red Square' Discussion at PhysOrgForum

Astronomers Obtain Highly Detailed Image of the 'Red Square'
Astronomers today announced the arrival of a new member in the pantheon of exotically beautiful celestial objects. Christened the "Red Square" by Peter Tuthill, leader of the team, the image was compiled with data from the 200-inch Hale Telescope at Palomar Observatory, owned and operated by the California Institute of Technology, and the Keck-2 Telescope atop Mauna Kea, Hawaii.
The findings will appear April 13 in the journal Science in an article titled "A symmetric bipolar nebula around MWC 922," written by Tuthill from the University of Sydney and coauthor James Lloyd of Cornell University.

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"Discoveries as beautiful--and interesting--as this one don't come around very often in astronomy," said Tuthill, "and it took some of the world's most advanced telescopes, together with a good dose of luck, to find this jewel hidden among the myriad stars in the galaxy."

"The key to finding it was in the revolutionary new imaging technology of adaptive optics, which acts like a myopia cure for a telescope," agreed Lloyd. "Startlingly clear images capable of revealing objects like this are now possible without the blurring."

The pair were studying a hot star called MWC 922 in the constellation Serpens (the serpent mythologically associated with the origin of medicine). The image shown here combines data taken in near-infrared light (1.6 microns) and shows a region 30.8 arcseconds on a side around MWC 922. As the outer periphery of the nebula is very faint compared to the core, the image has been processed and sharpened to display the full panoply of detail and structure.

"The thing that really takes your breath away is the astonishing degree of symmetry within the intricate linear forms," said Tuthill. "If you fold things across the principle diagonal axis, you get an almost perfect reflection symmetry. This makes the Red Square nebula the most symmetrical object of comparable complexity ever imaged."

The overall architecture of twin opposed conical cavities (commonly known in astronomy as a "bipolar nebula") is seen to be adorned with a remarkable sequence of sharply defined linear rungs or bars. This series of rungs and conical surfaces lie nested, one within the next, down to the heart of the system, where the hyperbolic bicone surfaces are crossed by a dark lane running across the principle axis. One particularly fascinating feature visible in the images is a series of faint radial spokes, like teeth of a comb, pointing away from the center. "Structures such as this are rarely seen in nebulae, and the high degree of regularity in this case may point to the intriguing possibility that these bands are shadows cast by periodic ripples or waves on the surface of an inner disk close to the star at the heart of the system," said Lloyd. But the most compelling and important implication for astronomy comes from the three-dimensional structure implied by the Red Square images.

"If you can really get a mental grasp of the three-dimensional geometry implied by the Red Square images," said Tuthill, "then it is fascinating to take a second look at one of the most famous astronomical images of them all: SN1987A." An image of the supernova as seen by the Hubble Space Telescope is to the right, showing the beautiful and unexpected ring system revealed around SN1987A--the only naked-eye supernova since the discovery of the telescope.

"We are not saying that the star MWC 922 at the heart of the Red Square is about to explode as a supernova," said Lloyd, "but we're not ruling it out either, and if it did it would certainly put on quite a show as it kindles the outer reaches of its nebula."

Whatever the fate of the central star, the remarkable series of bars seen in the Red Square make it the best astrophysical laboratory yet discovered for studying the physics of generating the mysterious sharp polar-ring systems like that around SN1987A.

According to Tuthill, "This is just the beginning-a system as complex and fascinating as this is bound to keep us guessing for years to come."

The image was made possible by the Palomar Adaptive Optics System, built by Caltech Optical Observatories and Jet Propulsion Laboratory, and captured by its companion infrared camera, built by Cornell University.

Source: Caltech
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There is a discussion of this story at PhysOrgForum entitled: "Red Square"!!!!!
There are 3 replies in that topic. The last post was on 15-Apr-2007
The first 4 posts are :

On 13-Apr-2007 by IAMoraes

Best thing to do first would be to logically-or one side of the nebula to the other (ok, ok: superimpose) to know if it is possible to have a good estimate of how many spokes it has.
On 14-Apr-2007 by fleem
Nice pic.

Just some notes: When a quickly spinning star explodes, the expelled dust creates (because of the spin and also the strong magnetic field) a symmetric hourglass/barbell/tubular pattern who's axis is the same as the star's spin. Consider all the barbell nebulas we see out there. I believe we are viewing this from the side of the hourglass, so those spokes are actually the 'wall' of the hourglass.
On 14-Apr-2007 by kaneda
To me it looks like it has exploded outwards in the "east and west" direction of spin and also sent out magnetically propelled jets in the "north and south" directions which from four points gives the optical illusion of a square.
On 15-Apr-2007 by IAMoraes
To me it looks like it has exploded outwards in the "east and west" direction of spin and also sent out magnetically propelled jets in the "north and south" directions which from four points gives the optical illusion of a square.

And that **is** the problem, Kaneda. An *explosion* of **ordered matter** is the equivalent of a laser beam that emits in more than 3 dimensions and less than 4 dimensions!

What about those 6-spike stars around it? Are those "illusions" too?

Note that the six-spike stars lie roughly in what we (from our point of view) could take as a curved line around the Red Square. We are still waiting for distance info on those... that they seem to lie in the same orbit is where the illusion is.
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