Sentences with phrase «to become a white dwarf»

A star becomes a white dwarf when it has exhausted its nuclear fuel and all that remains is the dense inner core, typically made of carbon and oxygen.

Our little yellow dwarf star will eventually become a white dwarf instead.

Once this fuel is used up, however, the remaining matter is crushed into the center of the star, which becomes a white dwarf.

Stars heat up and bloat into red giants before becoming white dwarfs, and the chance for life surviving this process on any planets around them is low, says von Hippel.

The behavior of a star now depends on its mass, with stars below 0.23 solar masses becoming white dwarfs, while stars with up to 10 solar masses pass through a red giant stage.

Coupled with the fact that 98 % of all stars become white dwarfs when they run out of nuclear fuel, he says that suggests «the fraction of stars that create rocky planets is high».

Such «barium stars» may be binaries, where a more massive companion has already thrown off its outer gas envelopes as a planetary nebula in becoming a white dwarf (see HD 147513 AB).

The most massive stars, with eight times the mass of the sun or more, will never become white dwarfs.

WISE 1828 +2650 is similar in appearance to the other Y - type object WD 0806 - 661 B. WD 0806 - 661 B could have formed as a planet close to its primary, WD 0806 - 661 A, and later, when the primary became a white dwarf and lost most of its mass, have migrated into a larger orbit of 2500 AU, and similarity between WD 0806 - 661 B and WISE 1828 +2650 may indicate that WISE 1828 +2650 had formed in the same way.

However, red dwarfs take trillions of years to consume their fuel, far longer than the 13.8 - billion - year - old age of the universe, so no red dwarfs have yet become white dwarfs.

This core will eventually become a white dwarf, with a mass similar to the Sun...

Sirius B manufactured lots of heavier elements which it puffed out into space and onto Sirius A before becoming a white dwarf.

These nebulae are formed during the last stages of a star's life when a red giant star casts of its outer layers in a process which leads to the star becoming a white dwarf.

Creating so much oxygen takes a fiercer nuclear furnace than is needed for a carbon - rich mixture, so the stars that became these white dwarfs must have been hot and massive.

As relatively small stars (those less than ten times the mass of our sun) near the end of their lives, they throw off their outer layers and become white dwarf stars, which are very dense.

Editor's note: This story was updated January 19, 2018, to clarify the types of stars that become white dwarfs.

Eventually that star, which now shines fiercely in ultraviolet wavelengths, will evolve to become a white dwarf, a dense star about as massive as our sun yet only slightly larger than Earth.

All four are so hot — 14,000 to 20,000 Kelvin — that they look blue, indicating that they became white dwarfs recently.

Old stars are coming unglued on the way to becoming white dwarfs — and astronomers confidently predict that in 5 billion years the sun will be an old star.

The detected water most likely came from a minor planet, at least 90 km in diameter but probably much larger, that once orbited the GD 61 star before it became a white dwarf around 200 million years ago.

A red giant will lose its outer layers to become a white dwarf.

Such a star may become a white dwarf or a neutron star, but if the star is sufficiently massive then it may continue shrinking eventually to the size of a tiny atom: this is the so - called «gravitational singularity».

The sun will eventually lose most of its mass as it becomes a white dwarf, and could come to resemble other burnt - out star systems spotted by NASA's Spitzer Space Telescope in a 2009 study.

For stars with less than 0.23 solar masses, [16] energy generation by nuclear fusion comes to a halt and it becomes a white dwarf.

Even for these more massive stars, however, if the residual mass in the core is less than 1.4 solar masses (the Chandrasekhar limit), the stellar remnant will become a white dwarf.

Stars, up to eight times the size of the sun, at the end of their life, collapse and become white dwarfs.

As time progresses after the formation of a cluster, the massive stars, which evolve the fastest, gradually disappear from the cluster, becoming white dwarf stars or other underluminous stellar remnants.

Eventually, it will shed its outer layers, and the remaining core will collapse to become a white dwarf.

Small stars, like the Sun, will pass through a planetary nebula phase to become a white dwarf, this eventually cools down over time leaving a brown dwarf.

Such a star may become a white dwarf or a neutron star, but if the star is sufficiently massive then it may continue shrinking eventually -LSB-...]

The Cat's Eye Nebula will gradually disperse over the next several thousand years and the progenitor star will eventually cool down and become a white dwarf.

CW Leonis is at a late stage of its evolution, blowing off its outer layer to eventually become a white dwarf.