Sentences with phrase «of a planetary nebula»

NIRES Principal Investigator Keith Matthews of Caltech (left) with W. M. Keck Observatory Director Hilton Lewis (right) after successfully achieving «first light» with a spectral image of planetary nebula NGC 7027.

This is a false color image of the planetary nebula NGC 6778.

[2] The shapes of the planetary nebula images were classified into three types, following conventions: elliptical, either with or without an aligned internal structure, and bipolar.

Astronomers once would have called the orderly, spherical Abell 39 a textbook example of a planetary nebula - but the Hubble Space Telescope has forced scientists to rewrite the textbooks.

As big planetary nebulae are the most common, we will use our new scale in making an unbiased census of planetary nebulae in the Milky Way, which will then help answer some important research questions.»

The astronomers suggest that the orderly behaviour of the planetary nebulae could have been caused by the presence of strong magnetic fields as the bulge formed.

«NGC6778,» adds another of the authors, Hektor Monteiro, of the University fo Itajubá, Brazil, «is one of the planetary nebulae with the brightest recombination lines.

To try to corroborate this theory, an image of the emission of a planetary nebula in the recombination lines of oxygen has been obtained with the GTC.

Invisible dark matter may have started out as hot white dwarfs like this one in the middle of planetary nebula NGC 2440.

Astronomers were thrilled when they first saw the Hubble images of the planetary nebulas ngc 7027 and crl 2688, also known as the Egg nebula.

«Bizarre alignment of planetary nebulae.»

When the shape of the outer shock changes, the shape of the planetary nebula changes as well.

Many of these planetary nebulas have a funny kind of inverted mirror symmetry, with their tops and bottoms reflected and then reversed, as in the letter s.

Last year astronomers using Cray supercomputers in the United States and the Netherlands performed hundreds of planetary nebula simulations, which revealed a rich array of behavior in the shock wave layer cake.

After a few hours or weeks, depending on how super the supercomputer is, a thousand years of planetary nebula history is waiting in the computer's memory to be studied in detail.

A couple of longtime students of planetary nebulas, Bruce Balick of the University of Washington and Adam Frank of the University of Rochester, recently summed up the impact of the Hubble images.

The ESO's Very Large Telescope (VLT) has captured a beautiful image of a planetary nebula known as NGC 7009, or the Saturn Nebula, as part of a wider study attempting to unravel the processes that give these vast cosmic clouds of dust and glowing gas their distinctive shape.

The spectacular structure of the planetary nebula contains the outer layers of a star that were expelled into interstellar space.

An artist's impression of the heart of planetary nebula Henize 2 - 428, where researchers have identified two white dwarf stars destined to merge and create a Type Ia supernova

Gemini North image of the planetary nebula M97, also known as the Owl Nebula, imaged by the Gemini Multi-Object Spectrograph (GMOS) as part of a Canadian contest for high school students.

The stars which are even older have dissipated into a more diffuse background; this includes intermediate population I stars, older star clusters and the younger representatives of the planetary nebulae.

Dense knots of gas and dust seem to be a natural part of the evolution of planetary nebulae.

With this image of NGC 6210, the Hubble telescope has added another bizarre form to the rogues» gallery of planetary nebulae: a turtle swallowing a seashell.

The star lies at a center of a planetary nebula, formed after the star's red giant stage about 8,300 years ago.

A good example of a planetary nebula is the Eskimo Nebula, which is located about 5,000 light - years from Earth in the constellation Gemini.

Astronomers had also hoped that the Hubble images would uncover companion stars thought to be responsible for some of the more bizarre shapes of planetary nebulas.

Hubble's Wide Field Planetary Camera 2 captured this image of planetary nebula NGC 2440 on Feb. 6, 2007.

NGC 3132 is a striking example of a planetary nebula.