Sentences with phrase «extremely massive stars»

The star may represent a brief transitory stage in the evolution of extremely massive stars.

«Many astronomers, including our group, have already provided a great deal of evidence that long - duration gamma - ray bursts (those lasting more than two seconds) are produced by the collapse of extremely massive stars.

Current theories suggest that the seeds of these black holes were the result of either the growth and collapse of the first generation of stars in the Universe; collisions between stars in dense stellar clusters; or the direct collapse of extremely massive stars in the early Universe.

«People most often associate stellar explosions with ancient stars, like a nova eruption on the surface of a decaying star or the even more spectacular supernova death of an extremely massive star,» Bally says.

Not exact matches

The extremely strong gravity of a massive neutron star in orbit with a companion white dwarf star puts competing theories of gravity to a test more stringent than any available before

Measuring the proportion of massive stars is extremely difficult — primarily because of their scarcity — and there are only a handful of places in the local Universe where this can be done.

For the last few years, he has studied a gaggle of extremely fast - moving stars, stellar runaways that were long ago flung out of the Milky Way by the massive black hole at its center.

Bursts probably occur after a hypernova, an extremely rare explosion of a star so massive it can barely support its own bulk.

The galaxies — which would appear as flat, rotating disks — are brimming with extremely bright and massive blue stars.

Extremely bright exploding stars, called superluminous supernovae, and long gamma ray bursts also occur in this type of galaxy, he noted, and both are hypothesized to be associated with massive, highly magnetic and rapidly rotating neutron stars called magnetars.

When a massive star goes supernova, its core collapses into an extremely compact object: either a dense neutron star or a black hole.

An ancient star a mere thousand light - years from Earth bears chemical elements that may have been forged by the death of a star that was both extremely massive and one of the first to arise after the big bang.

Massive stars that collapse upon themselves and end their lives as black holes, like the pair LIGO detected, are extremely rare, O'Shaughnessy said.

The discovery is «extremely important in terms of understanding the evolution of the most massive stars,» says x-ray astronomer Michael Corcoran of NASA's Goddard Space Flight Center in Greenbelt, Maryland.

Two teams of astronomers led by researchers at the University of Cambridge have looked back nearly 13 billion years, when the Universe was less than 10 percent its present age, to determine how quasars — extremely luminous objects powered by supermassive black holes with the mass of a billion suns — regulate the formation of stars and the build - up of the most massive galaxies.

It is unfortunate, then, that some of the easiest planets to detect are the so - called hot Jupiters: massive bodies hugging tight to their host stars and therefore subject to extremely high (and probably life - negating) temperatures.

Extremely turbulent environments can disrupt the normal procession of material onto a protostar, while intense radiation — from massive nearby stars and supermassive black holes — can blast away the parent cloud, thwarting the formation of all but the most massive of stars.

«The massive stars have extremely high winds associated with them and the winds are colliding and swirling at very high speeds, which make the gases in this environment very hot.

Both of these techniques work best when the planets are either extremely massive or when they orbit very close to their parent stars.

Supernovae (singular: supernova) are the rare and extremely powerful explosions of massive stars late in their evolutionary histories.

If so, then it's possible that most, if not all, of the galaxy's extremely metal - poor stars surviving to the present day originally formed as part of a binary pair, a byproduct of the formation of a massive star.

Stars much more massive than the Sun end their normal lives in violent supernova explosions, leaving behind an extremely dense neutron star.

Astronomers believe that these are spinning neutron stars (extremely dense objects formed from the collapse of massive stars) with strong magnetic fields that emit radio signals in one direction.

A supernova is the name given to the birth of an extremely bright, brilliant star, caused by the spectacular explosion of a massive star at the end of its life.