From Manu Garcia: “Hubble offers a dazzling necklace”

Manu Garcia, a friend from IAC.

Manu needs a new happier picture.

The universe around us.
Astronomy, everything you wanted to know about our local universe and never dared to ask.

PN G054.2-03.4

A giant cosmic necklace glowing with the image Hubble Space Telescope NASA / ESA .

NASA/ESA Hubble Telescope

The object, aptly dubbed the Necklace Nebula is a planetary nebula recently discovered remains of a brilliant ordinary star like the Sun when it reaches the end of his life. The nebula is a bright ring is about two light years through dense knots dotted bright gas resembling diamonds in a necklace. Glowing knots due to absorption of ultraviolet light from the central star.

A pair of stars in close orbit produced the nebula, also called PN G054.2-03.4 . About 10,000 years ago one of the aging star swelled to the point that engulfed its companion star. The smaller star was orbiting within its larger companion, increasing the speed of rotation of the giant star so swollen spread so fast that a large part of its gaseous envelope to expand into space. Most of the gas escaped along the Ecuador star, producing a ring. Bright knots are dense clumps of gas in the ring.

The couple are very together, only a few million kilometers away appearing as a bright spot in the center of the image. The stars are spinning furiously around him completing an orbit in just over a day. By comparison, Mercury, the innermost planet of our solar system, orbits the Sun in 88 days.

The Necklace Nebula is located 15,000 light – years away in the constellation Sagitta (the Arrow). In this composite image, taken on July 2, the Wide Field Camera 3 Hubble captured the glow of hydrogen ( blue ), oxygen ( green ) and nitrogen ( red ).


NASA, ESA and the Hubble Heritage Team (STScI / AURA)

Originally published here on 15 August 2011.

See the full article here .

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