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Blob
2006-Jun-28, 08:59 PM
The protoplanetary disk around the young star HD 142527 has been found to consist of two banana-shaped arcs facing each other.
Two teams of astronomers using the Subaru telescope on Mauna Kea found a gap in the ring that could be the result of planetary formation, or a much dimmer companion star; and an extended arc that could have formed during a recent encounter with another star.
The gap corresponds to a distance of the orbit of Uranus and Neptune in our own solar system. The protoplanetary disk extends out to beyond 100 astronomical units, or three times the distance between Neptune and the Sun.

Read more (http://staff.science.uva.nl/~verhoeff/poster.pdf) (related material)

Blob
2006-Jun-28, 10:28 PM
Two images of HD142527

Position(2000): RA =15 56 41.8 Dec = -42 19 23

A COMICS image of HD142527's protoplanetary disk at 24.5 microns. The right had panel overlays contours of CIAO's near-infrared results on top of the COMICS image.
(COMICS is the camera and spectrograph on the Subaru telescope)
Credit naoj

And a (the black one) 14'1 x 14'1 sized view.
File image

Ara Pacis
2006-Jun-29, 12:50 AM
banana shaped... could be thought of as serpentine shaped... I see it now...

Snakes on a Planet

publiusr
2006-Jun-29, 09:42 PM
I like "HD goes bananas!" better.

Ara Pacis
2006-Jun-29, 11:43 PM
The Banana Splits?

Blob
2006-Jun-30, 12:04 AM
>> banana splits
Hum,
The 80s kid show?
Tra la la la,

i prefer `isigubudu` - `two horns of a Zulu attack`, er, only because i play quake.