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Why do type 2 supernovae occur in massive stars when the core reaches a critical mass of iron?
Type 2 supernovae occur in massive stars when the iron core reaches a critical mass because fusion of iron absorbs energy rather than releasing it. This causes a buildup of inert iron in the core, leading to a collapse due to lack of outward pressure to counteract gravity. The collapse triggers a powerful explosion, resulting in a Type 2 supernova.
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What is the difference between Type I and Type II supernovae?
supernovae are classified by the lines in their spectra (which indicate which elements are present). type I supernovae have no hydrogen lines, having been caused by the explosion of a star with no hydrogen envelope. type II supernovae have hydrogen lines, indicating that the exploding progenitor star had retained a significant amount of its hydrogen before its supernova. type I supernovae are further classified based on the presence of silicon lines, which are present in type Ia supernovae but not types Ib and Ic.
Which class of violently exploding stars whose luminosity after eruption suddenly increases millions of times?
One class of violently exploding stars that experience a sudden increase in luminosity after eruption are supernovae. Supernovae occur when a massive star reaches the end of its life cycle and undergoes a catastrophic explosion, briefly outshining an entire galaxy. These events are crucial for the dispersal of heavy elements and the formation of new stars.
What role did supernova play in creating the natural elements?
It is precisely the supernovae that created those elements and dispersed them into space.It is precisely the supernovae that created those elements and dispersed them into space.It is precisely the supernovae that created those elements and dispersed them into space.It is precisely the supernovae that created those elements and dispersed them into space.
When does supernova occur?
A supernova occurs when a massive star reaches the end of its life cycle and undergoes a catastrophic explosion. This explosion can outshine an entire galaxy for a brief period of time before fading away.
How is it the super novas after the big bang didn't form black holes but rather elements?
There are two explanations. First, when a massive star forms a black hole, usually only a small portion of the star's mass actually goes into the black hole. Most of the rest is blasted away in a supernova, enriching the surrounding space with heavier elements. Second, there are also pair-instability supernovae. Such supernovae occur in extremely massive stars with a very low content of heavier elements, which likely existed in the early universe. Pair-instability supernovae will blow away the entire star, leaving behind no black hole or neutron star remnant.
Where are supernovae?
Supernovae are massive explosions that occur when a star uses up its gas and explodes so they will only occur once a star has died.
What is the difference between Type I and Type II supernovae?
supernovae are classified by the lines in their spectra (which indicate which elements are present). type I supernovae have no hydrogen lines, having been caused by the explosion of a star with no hydrogen envelope. type II supernovae have hydrogen lines, indicating that the exploding progenitor star had retained a significant amount of its hydrogen before its supernova. type I supernovae are further classified based on the presence of silicon lines, which are present in type Ia supernovae but not types Ib and Ic.
Which class of violently exploding stars whose luminosity after eruption suddenly increases millions of times?
One class of violently exploding stars that experience a sudden increase in luminosity after eruption are supernovae. Supernovae occur when a massive star reaches the end of its life cycle and undergoes a catastrophic explosion, briefly outshining an entire galaxy. These events are crucial for the dispersal of heavy elements and the formation of new stars.
What is a star exsplosion which increases the stars lumionosity to 1000 times that of a nova?
A supernova is an explosive event that can increase a star's luminosity to as much as 1000 times that of a nova. Supernovae occur when a massive star reaches the end of its life and undergoes a catastrophic collapse, releasing an immense amount of energy in the process.
What role did supernova play in creating the natural elements?
It is precisely the supernovae that created those elements and dispersed them into space.It is precisely the supernovae that created those elements and dispersed them into space.It is precisely the supernovae that created those elements and dispersed them into space.It is precisely the supernovae that created those elements and dispersed them into space.
Do most of the supernova explosions occur in a star cluster happen during the first 100 million years?
Yes, most supernova explosions in star clusters occur within the first 100 million years of the cluster's formation. This is primarily because massive stars, which end their lives as supernovae, have shorter lifespans and evolve rapidly. Consequently, the high rate of massive star formation in young clusters leads to a significant number of supernovae happening in this initial period. After this time, the rate of supernova occurrences decreases as the massive stars have already exploded.
When does supernova occur?
A supernova occurs when a massive star reaches the end of its life cycle and undergoes a catastrophic explosion. This explosion can outshine an entire galaxy for a brief period of time before fading away.
What are the key differences between a type 1a supernova and a type 2 supernova?
Type 1a supernovae occur in binary star systems where one star is a white dwarf that accumulates material from its companion until it reaches a critical mass, causing a thermonuclear explosion. Type 2 supernovae happen when a massive star runs out of fuel and collapses under its own gravity, leading to a powerful explosion. The key difference is the mechanism of the explosion: type 1a is caused by thermonuclear reactions, while type 2 is due to gravitational collapse.
What kind of star go through supernova?
Supernovae occur in stars that have reached the end of their life cycle and have run out of nuclear fuel to support their core. This typically happens to massive stars with at least eight times the mass of the sun.
Is a red dwarf star made from a supernova?
No, red dwarf stars are not made from supernovae. Red dwarf stars are low mass stars that form from the gravitational collapse of gas and dust in interstellar clouds. Supernovae, on the other hand, occur when massive stars reach the end of their life cycle and explode.
What are the key characteristics and implications of pair instability supernovae?
Pair instability supernovae are massive stellar explosions caused by the sudden collapse of a star's core due to the production of electron-positron pairs. These supernovae are unique because they occur in stars with extremely high mass, typically over 130 times the mass of our sun. The key characteristics of pair instability supernovae include the absence of a compact remnant like a black hole or neutron star, as the entire star is completely destroyed in the explosion. This type of supernova also produces large amounts of radioactive nickel, which can be detected in the aftermath of the explosion. The implications of pair instability supernovae are significant for understanding the evolution of massive stars and the production of heavy elements in the universe.
How is it the super novas after the big bang didn't form black holes but rather elements?
There are two explanations. First, when a massive star forms a black hole, usually only a small portion of the star's mass actually goes into the black hole. Most of the rest is blasted away in a supernova, enriching the surrounding space with heavier elements. Second, there are also pair-instability supernovae. Such supernovae occur in extremely massive stars with a very low content of heavier elements, which likely existed in the early universe. Pair-instability supernovae will blow away the entire star, leaving behind no black hole or neutron star remnant.
