Sentences with phrase «become white dwarf stars»

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.

Not exact matches

Therefore, the white dwarf is left over after adding mass to a star, which becomes the blue straggler.»

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

It was named in honor of Indian - American physicist Subrahmanyan Chandrasekhar who is known for determining the mass limit for white dwarf stars to become neutron stars.

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.

These icy bodies apparently survived the star's evolution as it became a bloated red giant and then collapsed to a small, dense white dwarf.

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

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».

Other Sloan researchers have identified a new class of white dwarfs, the cores left over after sun - size stars die, and have sighted elusive brown dwarfs, objects too big to be planets but not quite massive enough to ignite fusion reactions and become stars.

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.

Halo stars die by becoming red giants and then white dwarfs — dense stars little larger than Earth.

If a star started out with 1.4 times the mass of the sun or less, it will become a dense white dwarf, packing the mass of the sun into an Earth - sized volume.

White - dwarf stars (circled) cool as they become older.

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.

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.

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.

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».

When the mass of the remnant core lies between 1.4 and about 2 solar masses, it apparently becomes a neutron star with a density more than a million times greater than even that of 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.

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.

David Aguilar, Harvard - Smithsonian Center for Astrophysics — larger «day» and «night» images At maximum brightness, Mira would light up a hypothetical planetary companion, but at its most dark, the giant star's small, hot white dwarf companion would become visible (more discussion with illustration).

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).

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.

A planetary nebula is a phase of stellar evolution that the sun should experience several billion years from now, when it expands to become a red giant and then sheds most of its outer layers, leaving behind a hot core that contracts to form a dense white dwarf star.

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-...]

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.

The works have cosmological associations — «stars expanding their energy and becoming black holes, white dwarfs, and neutron stars,» Eversley explained at the time — but also prompt us to consider the symbolic values of color itself, even as identity - driven associations.

When Eversley made these works, he wanted to evoke «stars expanding their energy and becoming black holes, white dwarfs, and neutron stars.»