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What would happen if a white dwarf gained enough mass to reach the 1.4 solar mass?
A) If enough mass is accreted by a white-dwarf star so that it exceeds the 1.4-solar-mass limit, it will undergo a supernova explosion and leave behind a black-hole remnant.
What happens if a white dwarf reaches the 1.4 Msunmsun limit?
If a white dwarf reaches the white dwarf limit of 1.4 Msun, it will ignite carbon fusion and explode completely. The luminosity of the white dwarf supernova fades quickly during the first few weeks and then declines gradually. Describe the mass, size, density of a typical neutron star.
How White Dwarfs Die | How the Universe Works
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What would happen if a white dwarf gained enough mass?
If a white dwarf does, however, gain enough mass through this process, it will collapse in a supernova type I. The supernova is probably too powerful to leave a neutron star behind; the white dwarf is blown apart. On the other hand, a neutron star which accretes too much mass will indeed collapse into a black hole.
What happens if its mass reaches the 1.4 solar mass limit?
What happens if the mass someday reaches the 1.4 solar mass limit? The white dwarf will explode completely as a White Dwarf Supernova.
What would happen if more mass was added to a 1.4 solar mass neutron star?
What would happen if more mass was added to a 1.4-solar-mass neutron star? All of its protons and electrons would turn into quarks. It would become a black hole, via a hypernova explosion.
What are white dwarfs quizlet?
What is a white dwarf? the corpse of a low-mass star, supported against the crush of gravity by electron degeneracy pressure.
When a white dwarf accretes enough material and reaches the 1.4 solar masses limit its temperature becomes hot enough for carbon fusion What happens next?
What happens to a white dwarf when it accretes enough material to reach the 1.4 Msun limit? It explodes. It collapses into a neutron star. It gradually begins fusing carbon in its core.
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Suppose a white dwarf is gaining mass because of accretion from a binary companion. What happens if its mass reaches the 1.4 solar mass limit?
Why is there a mass limit for white dwarf stars?
This is because the more mass a white dwarf has, the more its electrons must squeeze together to maintain enough outward pressure to support the extra mass. However, there is a limit on the amount of mass a white dwarf can have. Subrahmanyan Chandrasekhar discovered this limit to be 1.4 times the mass of the Sun.
What happens to the electron speeds in a more massive white dwarf and how does this idea lead to the white dwarf limit for mass?
What is the white dwarf limit? Electron speeds are faster in more massive white dwarf stars. The electrons can’t travel faster than the speed of light and so white dwarves are unable to stably exist above 1.4 solar masses, the amount of mass required for the electrons to go at the speed of light.
How much mass does a white dwarf lose?
This is highly dependent on the exact time dependence of the late, heavy mass loss and the alignment or otherwise of the planets at the time. Long answer: Stars with mass less than about 8 solar masses will end their lives as white dwarfs on a timescale which increases as their main sequence initial mass decreases.
What happens if you add mass to a neutron star?
The adding of mass to a neutron star from a companion results in an old situation. As the mass of the NS increases, it becomes smaller and smaller in diameter, as at larger masses the nuclei pack together ever more tightly.
What happens if a white dwarf and neutron star collide?
The supernova explosions of white dwarfs and the collisions of neutron stars create new elements on the periodic table. For all these reasons, white dwarfs and neutron stars are important laboratories for physics at the extremes of strong gravity, density, and temperature.
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When the mass of a star becomes more than 1.4 times the solar mass?
If the mass of the stellar remnant exceeds 1.4 solar masses then the electron degenerate pressure is insufficient to withstand the force of gravity. The core will thus continue to collapse and form either a neutron star or a black hole.
What happens if a white dwarf mass exceeds the Chandrasekhar mass?
Consequently, a white dwarf with a mass greater than the limit is subject to further gravitational collapse, evolving into a different type of stellar remnant, such as a neutron star or black hole. Those with masses up to the limit remain stable as white dwarfs. The limit was named after Subrahmanyan Chandrasekhar.
When a massive star dies greater than 8 times the mass of the Sun which two stellar remnants might it leave behind quizlet?
B) Any star that is more massive than 8 solar masses will undergo a supernova explosion and leave behind a black-hole remnant.
What would happen if mass were continually added to a neutron star that was 2.9 times the mass of the Sun?
What would happen if mass were continually added to a 2-M! neutron star? The star would eventually become a black hole.
How many solar masses is a white dwarf?
The Chandrasekhar limit of around 1.4 solar masses is the theoretical upper limit to the mass a white dwarf can have and still remain a white dwarf. Beyond this mass, electron pressure can no longer support the star and it collapses to an even denser state – either a neutron star or a black hole.
What can escape a black hole?
Black holes are the blackest things in the universe. Because of their enormous, space-bending gravity, everything that falls into them is instantly ripped apart and lost. Scientists have never seen a black hole, because nothing, not even light, can escape them.
What is the white dwarf limit quizlet?
Because nothing can move faster than light, a white dwarf cannot be more massive than 1.4Msun, the white dwarf limit. Also called the Chandrasekhar limit.
What is true about a white dwarf quizlet?
What is a White Dwarf? Cannot be larger than 1.4M sun. – Electrons would have to travel faster than the speed of light to exceed this. – Electrons respond to compression by moving faster, which makes the degeneracy pressure strong enough to resist the greater force of gravity.
Which is a true statement about a white dwarf a white dwarf?
The statements which are true with the white dwarf are it is the result of the core collapse of a low mass star that sheds its outer layers and it cools down to become white dwarf. Explanation: The white dwarf is one which is formed from the sun and sheds its outer layers in order to form a white nebula.
Is there a limit to how much mass you can add to a white dwarf?
We establish from foundational level that the generic mass limit of white dwarfs is 2.58 solar mass.
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What would happen if the Sun suddenly became a black hole without changing its mass?
Instead, the Sun will become a dense stellar remnant called a white dwarf. But if, hypothetically, the Sun suddenly became a black hole with the same mass as it has today, this would not affect the orbits of the planets, because its gravitational influence on the solar system would be the same.
What keeps a white dwarf from collapsing further?
Degeneracy pressure keeps a white dwarf from collapsing under its own gravity. The maximum mass that a white dwarf can support against collapse is 1.4 solar masses due to the Chandrasekhar limit.
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