Sentences with phrase «emission nebula»

Composed primarily of hydrogen, much of it ionized (heated or energized) by radiation from the nearby superstar Herschel 36, M8 is known as an emission nebula.

The Bubble Nebula is an emission nebula located in Barnard's Galaxy.

The nebula is in fact a combination of an emission nebula (the lower part), a reflection nebula (the upper part) and an open cluster.

Immediately south of the star cloud, separated by a dark band, is the emission nebula IC 1283 - 1284, with two adjacent reflection nebulae, NGC 6589 and NGC 6590, all these nebulae associated with the little conspicuous open cluster NGC 6595.

Like the main nebula M42, this is an emission nebula, shining by the light emitted from its atoms, after being excited by the high - energy radiation of massive, very hot young stars within it.

The Trifid Nebula is a brilliant red emission nebula that appears to be divided into three regions by dark dust alleys.

The first object I centred into my eyepiece proved to be M16 in Serpens Cauda, a large star cluster (NGC 6611) and emission nebula (IC 4703), The Eagle Nebula.

This beautiful object, a combination of an emission nebula (NGC 6618) and open cluster (also NGC 6618), was discovered by Chesaux in the spring of 1746, before it was rediscovered by Messier in June of the same year.

This is a bright emission nebula which supposedly looks like the shape of the state of California (but is about 1 trillion times longer).

The Orion Nebula is an emission nebula.

The European Southern Observatory's Very Large Telescope located at the Paranal Observatory, Chile, has captured a stunning vista of an emission nebula known as LHA 120 - N55, or N55 for short.

IC 4701 is also a fairly large (but much fainter) emission nebula in this region.

It is part of an enormous cloud of molecular gas and dust obscuring background light from nearby emission nebula IC 434, producing the silhouette.

Monday, April 4, 2011: The distinctive sky feature LBN 114.55 +00.22, seen here, emits light, and therefore astronomers class it as an emission nebula.

This map shows the entire emission nebula, which extends across four degrees of the sky, which at a distance of 1900 light years corresponds to a diameter of 130 light years.

The dark nebula, now glowing, becomes an emission nebula.

«The giant emission nebula is an important piece of the puzzle since it signifies a tremendous amount of dense cool gas,» said Fabrizio Arrigoni - Battaia, a PhD student at the Max Planck Institute for Astronomy who was involved in the discovery.

The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a glowing emission nebula with a greenish hue and is situated below Orion's Belt.

NGC 2035 is an HII region, or emission nebula, consisting of clouds of gas that glow due to the energetic radiation given off by young stars.

With a diameter of nearly 1500 light - years, this is one of the largest nearby emission nebulae known.

Accordingly, the vast, cloud - like objects that glow with this light from hydrogen (and other) atoms are known as emission nebulae.

During the first close approach just prior to four billion years in the future, the sky is ablaze with new star formation, which is evident in vast numbers of emission nebulae and open young star clusters (Image: NASA / STScI)

The two galaxies had previously been catalogued as emission nebulae - Stewart Sharpless listed them as objects 191 and 197 in his Catalogue of H II Regions published in 1959.

Because emission nebulae consist almost entirely of ionized hydrogen, they are usually referred to as H II regions.

Diffuse emission nebulae are often called H II regions because they are mainly consisted of ionized hydrogen, H II - the roman number after the element symbol (here H) designating the ionization level: «I» would stand for neutral atoms, the «II» here means first ionization, i.e. the hydrogen atoms have lost their single electron, and for other elements higher numbers (ionization levels, or numbers of lost electrons) would be possible (e.g., He III, O III or Fe V).

With three observatories, two equipped with 14 inch computer - controlled telescopes, and the third with Star Chairs bearing powerful astronomical binoculars, Arkaroola's visitors can observe sibling planets, distant galaxies, globular clusters, emission nebulae and more.

Not exact matches

More accurate distances between the most common type of «planetary nebulae» and the Earth can be estimated simply with three sets of data: firstly, the size of the object on the sky taken from the latest high resolution surveys; secondly, an accurate measurement of how bright the object is in the red hydrogen - alpha emission line; and thirdly, an estimate of the dimming toward the nebula caused by so called interstellar - reddening.

«To do this,» explains Antonio Cabrera Lavers, head of astronomy at the GTC and one of the authors of the paper, «we have used for the first time the blue tunable filter of OSIRIS to take a deep image centred on the emission from the recombination lines of one of the oxygen ions in the planetary nebula 6778.»

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.

Human vision can sense the nebula's relatively bright, greenish emissions from ionized oxygen, but nothing else.

This comes from emissions of gases in the nebula, which are energised by the neutron star at the centre.

The researchers described several lines of evidence supporting the existence of a hidden AGN energizing the nebula, including the dynamics of the gas and emissions from other elements besides hydrogen, notably helium and carbon.

In a survey for Lyman - α emission at redshift z ≈ 2, we discovered a physical association of four quasars embedded in a giant nebula.

In this test, one Japanese 7 - m antenna and one 12 - m European antenna were used to receive emissions from Mercury and the Orion Nebula.

The RCW catalog identifies a large faint nebula, RCW 4, at the northern edge of the hydrogen - alpha emission surrounding the CMa OB1 association.

The emission colored in blue shows X-ray emission from a hot plasma cloud in the extended regions of the Orion Nebula, detected by the XMM - Newton satellite.

The light of the nebula here is primarily due to emission from twice - ionized oxygen, and its central star can be seen as the slightly bluer star very close to the center of the nebula.

The slowing of the pulsar's spin also supplies the energy needed to account for the nonthermal, or synchrotron, emission from the Crab Nebula, which ranges from X-rays to gamma rays.

For comparison, this pulsar's radio emission is some 250 times weaker than that from the famous pulsar in the Crab Nebula (the remnant of an explosion in the year 1054 recorded by Chinese astronomers and possibly also by Native Americans of the Anasazi tribe in modern - day Arizona and New Mexico).

The left image is a three - color composite, taken in blue, green, and red emission lines from glowing gas in the nebula.