Sentences with phrase «as a white dwarf»

The explosion was a Type Ia supernova, the most luminous variety, which occurred when a small, dense star known as a white dwarf blew up about 7000 light - years from Earth.

Specifically, the most energetic iron emission they studied is characteristic of so - called x-ray binary starsduos comprised of a dense stellar object such as a white dwarf star, a neutron star or a black hole that collects matter from a less dense companion, emitting x-rays in the process.

As Vega is so much bigger and hotter than Sol, however, the star will exhaust its core hydrogen after only another 650 million years or so (for a total life of around a billion years) and turn into a red giant or Cepheid variable before puffing away its outer layers to reveal a remnant core as a white dwarf.

Relatively small objects like our sun can live up to 10 billion years before briefly expanding into red giants and then slowly dying as white dwarfs.

As a white dwarf draws off hydrogen - rich material from a binary companion over millions of years, Gilfanov says, it experiences a steady process of nuclear fusion on its surface that gives off tremendous amounts of radiation.

Today the central star is of mag 16.6 and a high temperature of some 60,000 K, which will probably cool down as a white dwarf over the coming tens of billions of years.

The Sun is destined to perish as a white dwarf.

As white dwarfs age, they become cooler and fainter, becoming difficult even for sharp - eyed Hubble to detect.

«Tycho's Star» may have begun as a white dwarf that accreted too much mass from a close companion star and exploded as a Type - Ia supernova (more).

As the white dwarf pulls material from a companion star, the temperature increases, eventually triggering a runaway reaction that detonates in a violent supernova that destroys the white dwarf.

As the white dwarf accretes material from the nearby star, it's possible that could explode as a type la supernova.

According to current theory, two different mechanisms produce supernovae: First, stars considerably more massive than our Sun can most probably not evolve quietly into an end state as a white dwarf.

Despite the popularity of»90s classics like Wing Commander, X-Wing vs Tie Fighter, and Freespace, the combat space sim genre has been as dormant as a white dwarf for more than a decade.

A type Ia supernova arises from the explosion of an ultradense stellar remnant known as a white dwarf, but it is less than clear how the white dwarf comes to ignite in a thermonuclear blast.

But some scientists have suggested the fast - moving stars near the cluster centres could instead result from the gravity of many dim, dead stars such as white dwarfs or neutron stars.

Although the star should be only a few hundred million years old, it is so much bigger and hotter than Sol that it will exhaust its core hydrogen around only a billion years and turn into a red giant or Cepheid variable before puffing away its outer layers to reveal a remnant core as a white dwarf.

Planets orbiting more compact objects, such as white dwarfs, pulsars and black holes, might have even shorter years since they can get closer in.

The triad consists of an extremely dense, fast - rotating stellar corpse called a pulsar and two less massive dying stars known as white dwarfs.

It's close enough that researchers could confirm current theories indicating the supernova started out as a white dwarf — a small, collapsed stellar cinder.

One of these recently discovered pulsars, with a highly unusual orbit involving two other stars known as white dwarfs, can now help physicists test a different prediction of general relativity.

As the white dwarf is consumed in a runaway reaction, it explodes, expelling its remains in a vast cloud — a nebula.

These eventually disperse and leave behind hot, compact objects known as white dwarfs.

The stellar corpses — highly dense objects known as white dwarfs — were spotted inside a dense cloud of gas and dust known as a planetary nebula.

In most instances, especially among low - mass stars, the distended outer envelope of the star simply drifts off into space, while the core settles down as a white dwarf.

Hence, they provide excellent prospects for life in the distant future, a trillion years from now, long after the Sun will die and turn into an Earth - size cold remnant, known as a white dwarf.

It may be only about 225 to 250 million years old (Liebert et al, 2005; and Ken Croswell, 2005), but being so much bigger and hotter than Sol, the star will exhaust its core hydrogen within only a billion years and turn into a red giant or Cepheid variable before puffing away its outer layers to reveal a remnant core as a white dwarf.

«You can see bulges in distant galaxies, but you can not resolve the very faint stars, such as the white dwarfs.

When that happens, it will be known as a white dwarf, and will remain so for the billions of years it takes to cool down... twinkling in the night sky, hopefully for beings on the other side of the galaxy to admire and make a nightly wish upon.