Примеры использования Planetary nebulae на Английском языке и их переводы на Русский язык
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Concentrated levels of O III are found in diffuse and planetary nebulae.
Many, but not all, planetary nebulae exhibit an observed bipolar structure.
This gas floats away into space and forms beautiful and striking clouds,which are called planetary nebulae although they have nothing to do with planets.
Young planetary nebulae have the highest densities, sometimes as high as 106 particles per cm3.
Nearly all stars will eventually become planetary nebulae, including the Sun.
Planetary nebulae are generally faint objects, and none are visible to the naked eye.
They wanted to find out why these stellar leftovers(planetary nebulae)sometimesdidn't form rings, but strange shapes.
Planetary nebulae were found by visual spectroscopy at Dun Echt and during an Andes expedition.
Nova remnants when compared to supernova remnants or planetary nebulae generate much less both in energy and mass.
Planetary nebulae are created when a red giant star ejects its outer envelope, forming an expanding shell of gas.
Under the Morgan-Keenan spectral classification scheme, planetary nebulae are classified as Type-P, although this notation is seldom used in practice.
Planetary nebulae are created when an aging star blows away its outer layers of gas in a gigantic cosmic bubble.
Optical telescopes are used to look at planets, stars,galaxies, planetary nebulae and protoplanetary disks, amongst many other things.
Planetary nebulae get their shape from their star and their surroundings, such as whether the star has planets or other stars orbiting it.
Observations of the central stars in at least four planetary nebulae have confirmed that they do indeed possess powerful magnetic fields.
The temperatures observed in HH objects are typically about 8000-12,000 K,similar to those found in other ionized nebulae such as H II regions and planetary nebulae.
Starting from the 1990s,Hubble Space Telescope images revealed that many planetary nebulae have extremely complex and varied morphologies.
Densities, on the other hand, are higher than in other nebulae, ranging from a few thousand to a few tens of thousandsof particles per cm3, compared to generally less than 1000/cm3 in H II regions and planetary nebulae.
He contributed significantly in studies of star clusters, stellar populations,carbon stars, planetary nebulae, Wolf-Rayet stars, stellar classification and supernova remnants.
The"Dust in born-again Planetary Nebulae", and"Edge-on Dust Disks in Planetary Nebulae" programmes received observing time on the Infrared Space Observatory(ISO) satellite.
Stellar variability(i.e. asteroseismology) on, inter alia, T Tauri, Be and B, W CMa, δ Scuti, Ap- and Am-type stars, red giant anddwarf stars, planetary nebulae and post-novae;
The first project aims at observing the centres of some old, evolved planetary nebulae(PNe) harbouring a hot central star which has recently ejected highly processed hydrogen-poor material.
Among the several different types of emission nebulae are H II regions, in which star formation is taking place andyoung, massive stars are the source of the ionizing photons; and planetary nebulae, in which a dying star has thrown off its outer layers, with the exposed hot core then ionizing them.
The research at the Centre focuses on:Astrochemistry Astrophysical masers The Cosmic Microwave Background Gravitational lenses Theoretical astrophysics and cosmology Planetary nebulae Pulsars Stellar physics(including star formation and solar plasmas) Development of telescope receivers The Jodrell Bank Observatory, located near Goostrey and Holmes Chapel in Cheshire, has played an important role in the research of meteors, quasars, pulsars, masers and gravitational lenses, and was heavily involved with the tracking of space probes at the start of the Space Age.
Following the recognition that the B phenomenon could occur in several distinct types of star, four sub-types were named: B supergiants(sgB) pre-main sequence B stars(HAeB),a subset of the Herbig Ae/Be star stars compact planetary nebulae B stars(cPNB) symbiotic B stars(SymB) Around half of the known B stars could not be placed in any of these groups and were called unclassified B stars unclB.
Not all planetary nebulas take the shape of a butterfly, however.
This object was the first planetary nebula to be discovered; by Charles Messier in 1764.
NGC 7662 is a popular planetary nebula for casual observers.
V605 Aquilae, in the constellation Aquila,is the variable central star of the planetary nebula Abell 58.
This ejected material formed an immense cloud of material called a planetary nebula.