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.
A white dwarf is what stars like the Sun become after they have exhausted their nuclear fuel. Near the end of its nuclear burning stage, this type of star expels most of its outer material, creating a planetary nebula. Only the hot core of the star remains.
White dwarf stars, so called because of the white colour of the first few that were discovered, are characterized by a low luminosity, a mass on the order of that of the Sun, and a radius comparable to that of Earth.
A white dwarf star, also called a degenerate dwarf, is a stellar core remnant composed mostly out of electron-degenerate matter. A white dwarf is quite dense, its mass may be comparable to that of the Sun, while its volume could be comparable to that of Earth.A white dwarf star, also called a degenerate dwarf, is a stellar core remnant composed mostly out of electron-degenerate matterdegenerate matterWhen gas becomes super-compressed, particles position right up against each other to produce degenerate gas that behaves more like a solid.https://en.wikipedia.org › wiki › Degenerate_matterDegenerate matter – Wikipedia. A white dwarf is quite dense, its mass may be comparable to that of the Sun, while its volume could be comparable to that of Earth.
White dwarf stars — and their far-future versions known as black dwarfs — are stellar remnants, rather than true stars themselves. Even when matter accretes on the surface of a white dwarf and flares up with fusion, creating a nova, it cannot be considered a star.
What is true about a white dwarf?
A white dwarf is what stars like the Sun become after they have exhausted their nuclear fuel. Near the end of its nuclear burning stage, this type of star expels most of its outer material, creating a planetary nebula. Only the hot core of the star remains.
What characteristics does a white dwarf have?
White dwarf stars, so called because of the white colour of the first few that were discovered, are characterized by a low luminosity, a mass on the order of that of the Sun, and a radius comparable to that of Earth.
Which is the best description of a white dwarf star?
A white dwarf star, also called a degenerate dwarf, is a stellar core remnant composed mostly out of electron-degenerate matter. A white dwarf is quite dense, its mass may be comparable to that of the Sun, while its volume could be comparable to that of Earth.
Is a white dwarf a true star?
White dwarf stars — and their far-future versions known as black dwarfs — are stellar remnants, rather than true stars themselves. Even when matter accretes on the surface of a white dwarf and flares up with fusion, creating a nova, it cannot be considered a star.
What is a fact about white dwarf?
White dwarfs typically have a radius just . 01 times that of our own sun, but their mass is about the same. Stars like our sun fuse hydrogen in their cores into helium. White dwarfs are stars that have burned up all of the hydrogen they once used as nuclear fuel.
What are the characteristics of a white dwarf star?
White dwarf stars, so called because of the white colour of the first few that were discovered, are characterized by a low luminosity, a mass on the order of that of the Sun, and a radius comparable to that of Earth.
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.
Are white dwarfs solid?
Observations have revealed that dead remnants of stars like our Sun, called white dwarfs, have a core of solid oxygen and carbon due to a phase transition during their lifecycle similar to water turning into ice but at much higher temperatures.
What is unique about white dwarf stars?
White dwarf stars are believed to represent the final evolutionary state of stars that are not massive enough to end their lives in super or hyper novae events. Also known as “degenerate stars”, white dwarfs consist of electron-degenerate matter that no longer produces fusion energy.
Are white dwarfs brightest?
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.
How would you describe a white dwarf star?
A white dwarf is what stars like the Sun become after they have exhausted their nuclear fuel. Near the end of its nuclear burning stage, this type of star expels most of its outer material, creating a planetary nebula. Only the hot core of the star remains.
Are white dwarf stars cool and dim?
White dwarfs are hot (10,000K), dim stars.
What is a white dwarf star quizlet?
White Dwarf. a star, approximately the size of the earth, that has undergone gravitational collapse and is in the final stage of evolution for low-mass stars, beginning hot and white and ending cold and dark (black dwarf)
Is a white dwarf brighter or dimmer?
In order of increasing luminosity, from dimmest to most luminous would be: white dwarf, Sun, red giant, blue supergiant.
Is a white dwarf a real star?
White dwarfs are stars that have burned up all of the hydrogen they once used as nuclear fuel. Fusion in a star’s core produces heat and outward pressure, but this pressure is kept in balance by the inward push of gravity generated by a star’s mass.
Why is a white dwarf not a star?
The material in a white dwarf no longer undergoes fusion reactions, so the star has no source of energy. As a result, it cannot support itself by the heat generated by fusion against gravitational collapse, but is supported only by electron degeneracy pressure, causing it to be extremely dense.
More Answers On Which Statements Are True Of A White Dwarf
Which statements are true of a white dwarf – Which.wiki
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.
Select all the correct answers. Which statements are true of a white …
Which statements are true of a white dwarf? It has a red shell. It is the result of the core collapse of a low-mass star that sheds its outer layers. It emits massive amounts of light compared with other stars. It strongly attracts all matter or energy that comes near it. It cools down to become a black dwarf. Advertisement Answer 4.9 /5 37
Which statements are true of a white dwarf? It has a red shell. It is …
lovingheart 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.
Which statements are true of a white dwarf? – Brainly.com
05/18/2017 Biology High School answered Which statements are true of a white dwarf? Advertisement zachcllns is waiting for your help. Add your answer and earn points. Answer 5.0 /5 5 gordie9young Answer: It cools down to become a black dwarf and It is the result of the core collapse of a low-mass star that sheds its outer layers.
White dwarf – Wikipedia
A white dwarf star, is a stellar core remnant composed mostly of electron-degenerate matter. A white dwarf is very dense: its mass is comparable to that of the Sun, while its volume is comparable to that of Earth. A white dwarf’s faint luminosity comes from the emission of residual thermal energy; no fusion takes place in a white dwarf.
. Select all the correct answers. Which statements are true of a white …
Which statements are true of a white dwarf? It has a red shell. It is the result of the core collapse of a low-mass star that sheds its outer layers. It emits massive amounts of light compared with other stars. It strongly attracts all matter or energy that comes near it. It cools down to become a black dwarf. Answers: 3 Show answers
PH-109 Test 3 Study Questions from Quizes Flashcards | Quizlet
Which of the following statements about white dwarfs is true? Select one: a. They don’t allow any light to escape. b. They first appear at the center of a planetary nebula. c. The larger their mass, the larger their radius. d. They can be the remains of massive stars. e. They are smaller than neutron stars.
Why is there an upper limit to the mass of a white dwarf? A)… ask 8
A) White dwarfs come only from stars smaller than 1.4 solar masses. B) The more massive the white dwarf, the greater the degeneracy pressure and the faster the speeds of its electrons. Near 1.4 solar masses, the speeds of the electrons approach the speed of light, so more mass cannot be added without breaking the degeneracy pressure.
Chapter 18 study quizzes Flashcards | Quizlet
Which statement about accretion disks is not true? The primary factor determining whether a white dwarf has an accretion disk is the white dwarf’s mass. (The primary factor is not mass, but rather it is whether the white dwarf is in a close binary system where gas from its companion can spill over.)
Chapter 14 Flashcards | Quizlet
A) White dwarfs come only from stars with masses less than 1.4 solar masses. B) The more massive the white dwarf, the greater the degeneracy pressure and the faster the speeds of its electrons. Near 1.4 solar masses, the speeds of the electrons approach the speed of light, and no more mass can be supported.
ch. 18-black hole, white dwarfs, neutron stars Flashcards – Quizlet
C) As gravity overwhelms the neutron degeneracy pressure, it will become a white dwarf. D) It will slow down, the magnetic field will weaken, and it will become invisible. E) The neutron degeneracy pressure will eventually overwhelm gravity and the pulsar will slowly evaporate. Answer: D 22) How do we know that pulsars are neutron stars?
White dwarfs ‘appear more youthful than they actually are’, study says …
A white dwarf is the remains of a smaller star that has run out of nuclear fuel. While large stars – those exceeding ten times the mass of our sun – suffer a spectacularly violent climax as a …
Quiz CH 14 Flashcards | Quizlet
Spell Test PLAY Match Gravity Which of the following statements is most correct about white dwarfs and neutron stars. Click card to see definition ? More massive white dwarfs are smaller than less massive white dwarfs. Click again to see term ? 1/70 Previous ← Next → Flip Space Sets with similar terms Chapter 13 study quizzes 42 terms balbrycht
what is the primary composition of a white dwarf? – Lisbdnet.com
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.
White Dwarfs Facts, Information and Photos | National Geographic
A teaspoonful of their matter would weigh as much on Earth as an elephant—5.5 tons. White dwarfs typically have a radius just .01 times that of our own sun, but their mass is about the same …
White Dwarfs – Astronomy
White dwarfs are the burned-out cores of collapsed stars that, like dying embers, slowly cool and fade away. They are the remnants of low mass stars, among the dimmest objects observable in the Universe. They are low to medium (less than ten solar mass) Main Sequence stars which have burned through their reservoirs of both hydrogen and helium …
what is the primary composition of a white dwarf? – Top Tips
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.
Chapter 18 Flashcards | Chegg.com
The white dwarf will explode completely as a white dwarf supernova A neutron star is the remains of a star that died in a massive star supernova (if no black hole was created) (neutron stars form only as the result of iron core collapse in massive star supernovae) A typical neutron star is more massive than our Sun and about the size (radius) of
Ch. 13 Flashcards | Chegg.com
Which of the following statements about electron degeneracy pressure and neutron degeneracy pressure is true? Electron degeneracy pressure is the main source of pressure in white dwarfs, while neutron degeneracy pressure is the main source of pressure in neutron stars
ch 14 – Subjecto.com
The white dwarf that remains when our Sun dies will be mostly made of _____. carbon. Which statement about accretion disks is not true? The primary factor determining whether a white dwarf has an accretion disk is the white dwarf’s mass. According to present understanding, a nova is caused by _____.
ASTR 3220 Final Exam Solutions
Which of the following statements about white dwarfs is NOT correct? (a) white dwarfs contain helium or carbon (b) white dwarfs have high surface gravities (c) white dwarfs are about the size of the earth (d) white dwarfs are in hydrostatic equilibrium (E) white dwarfs are in thermal equilibrium . 6. If both stars in a close binary system lie completely inside their Roche lobes, then (A) mass …
Chapter 18 Flashcards | Chegg.com
Brown dwarfs, white dwarfs, and neutrons stars are all kept from collapsing by degeneracy pressure. True The upper limit to the mass of a white dwarf is 1.4 solar masses.
XLVIII. The density of white dwarf stars | SpringerLink
The density of the white dwarf stars is reconsidered from the point of view of the theory of the poly tropic gas spheres, and gives for themean density of a white dwarf (under ideal conditions) the formula ρ=2.162 × 106 × (M/⊙)2.
Imagine the Universe!
The white dwarf HZ 43 was observed by the X-ray satellite ROSAT. X-rays come from inside the visible surface of the white dwarf. This region is very dense and can be as hot as 100,000 degrees in a very young white dwarf. A white dwarf’s outer layers contain just helium and hydrogen and so are essentially transparent to the X-rays that are …
DOC
18.2 True/False Questions. 1) Brown dwarfs, white dwarfs, and neutrons stars are all kept from collapsing by degeneracy pressure. Answer: TRUE. 2) The upper limit to the mass of a white dwarf is 1.4 solar masses. Answer: TRUE. 3) More massive white dwarfs are smaller than less massive white dwarfs. Answer: TRUE
ASTR 3220 Final Exam – University of Colorado Boulder
Which of the following statements about white dwarfs is NOT correct? (a) white dwarfs contain helium or carbon (b) white dwarfs have high surface gravities (c) white dwarfs are about the size of the earth (d) white dwarfs are in hydrostatic equilibrium (e) white dwarfs are in thermal equilibrium . 6. If both stars in a close binary system lie completely inside their Roche lobes, then (a) mass …
White Dwarfs Facts, Information and Photos | National Geographic
A teaspoonful of their matter would weigh as much on Earth as an elephant—5.5 tons. White dwarfs typically have a radius just .01 times that of our own sun, but their mass is about the same …
10 Interesting Facts about White Dwarf Stars – Astronomy Trek
Almost all white dwarfs stars have the same mass. While white dwarf stars fall into a wide range of masses, from as little as 0.17 to as much as 1.3 times the Sun’ mass, most white dwarfs weigh in at between 50% to 70% of the Sun’s mass, with an average of around 60%. In practice, this means that while white dwarf stars are typically about …
White dwarfs: Facts about the dense stellar remnants | Space
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. White dwarf …
Living near a White Dwarf – Scientific American
A white dwarf is a hot, dense, metallic crystal ball, roughly the size of the Earth—1.4 Earth radii in the case of WD 1856+534—that is slowly cooling off because it no longer has a central …
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