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When a star loses its outer layer, it typically undergoes a process known as stellar mass loss. This can occur during various phases of a star's life, especially in the red giant phase or in the case of supernovae. The ejected material forms a nebula, while the remaining core may become a white dwarf, neutron star, or black hole, depending on the original mass of the star. This loss of outer layers also contributes to the enrichment of the interstellar medium with heavier elements forged in the star's core.
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Is a star's outer layer hot and dense?
Yes, a star's outer layer, called the photosphere, is hot and dense. This is where most of the visible light and heat emitted by the star originate. The temperature and density of the photosphere vary depending on the type and age of the star.
What causes the star to eject its outer layer?
Stars eject their outer layers during the final stages of their lives due to the depletion of nuclear fuel in their core. The core contracts, while the outer layers expand and may eventually be expelled in events like supernovae or planetary nebulae formation.
What are the three inner layers of a star?
The three inner layers of a star, specifically in the context of a typical main-sequence star like the Sun, are the core, radiative zone, and convective zone. The core is the innermost layer where nuclear fusion occurs, producing energy. Surrounding the core is the radiative zone, where energy is transferred outward through radiation. The outer layer, the convective zone, allows for convective currents that transport energy to the star's surface.
Which star expands due to fusion?
As a star ages and runs out of fuel in its core, it can expand in size as it transitions into a red giant. During this phase, fusion reactions occur in the outer layers of the star, causing it to expand and cool. This expansion happens when the star exhausts its hydrogen fuel and begins fusing helium in its core.
Which stage does a stars lose most of its mass?
A star loses most of its mass during the later stages of its life, particularly during the red giant phase and eventually during a supernova explosion. The star sheds outer layers of gas and dust, releasing a significant amount of its mass back into space.
Is the Photosphere the outer layer on a star?
Magnetosphere is the layer above the photospere.
When a red giant loses its outer layer and the core shrinks to one millionth of its original size what type of star is formed?
When a red giant loses its outer layer and the core shrinks, it can form a white dwarf. White dwarfs are dense, Earth-sized remnants of low to medium mass stars that have exhausted their nuclear fuel.
Is a star's outer layer hot and dense?
Yes, a star's outer layer, called the photosphere, is hot and dense. This is where most of the visible light and heat emitted by the star originate. The temperature and density of the photosphere vary depending on the type and age of the star.
Where on a star is the photosphere?
The photosphere is the outer part of the star that is visible, inside which the star becomes opaque to visible light. The photosphere is the layer below the star's atmosphere (the chromosphere, and so forth).
What happens during the life cycle of a star with two or three stellar masse?
A low mass star begins as the helium fuses into carbon and the core collapses. The outer layer of the star are expelled and form a new planetary nebula. The core remains as a white dwarf and cooled to become a black dwarf.
When red giant loses its outer layers and the core shrinks to one-millionth of its original size what type of star is formed?
white dwarf
When a red giant loses its outer layers and the core shrinks to one-millionth of its original size what type of star is formed?
white dwarf
When a red giant loses its outer layers and the core shrinks to one millionth of its original size what type of star is formed?
white dwarf
When a red giant loses its outer layers and the core shrinks to one - millionth of its original size what type of star is formed?
A white dwarf.
What is formed when an average size star uses up it's fuel and it outer layer expands?
A Red Giant
How do different scientists spectra to figure out the composition of a star's outer layer?
The color of the light radiated by the spectra can show the internal composition as well as the gases burning on the outer layer. Red stars are colder and blue stars are hotter.
What happens to a small star when it runs out of fuel?
It loses its outer layers because it has expanded to the point where gravity can no longer hold it together. The inner part of the star becomes a white dwarf, called a white dwarf because it is still glowing with the remaining heat of the dead star. It eventually becomes a black dwarf, where it has radiated all its energy out and no longer glows.
