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High mass main sequence stars do in fact become red giants. These massive red giants are called red supergiants. They are usually between 10 and 40 solar masses and are 50,000 to 400,000 times as luminous. The best known example is Betelgeuse in the famous Orion constellation. These stars only live for about 5 to 15 million years so they are usually rare.
First you have to understand that all stars go through the main sequence stage. Main sequence means converting Hydrogen to Helium via Fusion. After that the mass and density of a star denotes what it becomes. Our sun will become a Red Giant, but will not go Nova. Stars like VY Canis Majoris will go Nova, and probably be either a Neutron Star or a Black-hole. High mass Stars are already beyond the Red Giant stage.
What else can I help you with?
Does It takes less and less time to fuse heavier and heavier elements inside a high-mass star?
Yes, it takes less time to fuse heavier elements inside a high-mass star because the higher the mass of the star, the higher the core temperature and pressure, which accelerates nuclear fusion reactions. As the star runs out of lighter elements to fuse, it progresses to fusing heavier elements at a faster rate until it reaches iron, at which point fusion stops and the star undergoes a supernova explosion.
How Heavier elements in the universe were formed by .?
Heavier elements in the universe were primarily formed through nuclear fusion processes in stars. During their lifecycles, stars fuse lighter elements, like hydrogen and helium, into heavier elements in their cores. When massive stars exhaust their nuclear fuel, they undergo supernova explosions, which scatter these heavier elements into space, enriching the interstellar medium. Additionally, processes like neutron capture during these explosive events contribute to the creation of even heavier elements.
What were the heavier elements in the universe for by?
Heavier elements in the universe were primarily formed through processes such as stellar nucleosynthesis and supernova explosions. Inside stars, lighter elements like hydrogen and helium fuse under extreme temperatures and pressures to create heavier elements up to iron. Elements beyond iron are generally formed during supernova events, where the extreme conditions allow for rapid neutron capture processes (r-process). These heavier elements are then released into space, contributing to the formation of new stars, planets, and ultimately, life.
Why can't a star fuse chemical elements beyond iron?
It sure can - and some stars do, to a minor degree. However, it can no longer gain energy from this fusion - it costs energy to create heavier elements. --- To fuse Iron, you would need a huge amount of heat and pressure, higher than what can be provided by even the massive stars is existence. The upper limit of a stars mass puts this limit on what materials it can fuse. Elements heavier than Iron are created during a supernova explosion, the death of a massive star.
What conditions of a supernova cause elements that are heavier than iron to form?
Because for a star to fuse elements heavy elements (iron and heavier) it would actually consume energy rather than liberate it. That doesn't work well to keep the star "alive." The explosion of the supernova itself can create these heavier elements because of the heat of the blast.
What fuel is used by red giant stars?
After using up its hydrogen-1, the star becomes a red giant. It will start fusing helium-4 into heavier elements. It may also fuse heavier elements, to get other elements that are yet heavier.
Does It takes less and less time to fuse heavier and heavier elements inside a high-mass star?
Yes, it takes less time to fuse heavier elements inside a high-mass star because the higher the mass of the star, the higher the core temperature and pressure, which accelerates nuclear fusion reactions. As the star runs out of lighter elements to fuse, it progresses to fusing heavier elements at a faster rate until it reaches iron, at which point fusion stops and the star undergoes a supernova explosion.
What does nucleur fusion create inside stars?
First hydrogen nuclei fuse to form helium, and then as the star ages heavier and heavier elements are formed.
How Heavier elements in the universe were formed by .?
Heavier elements in the universe were primarily formed through nuclear fusion processes in stars. During their lifecycles, stars fuse lighter elements, like hydrogen and helium, into heavier elements in their cores. When massive stars exhaust their nuclear fuel, they undergo supernova explosions, which scatter these heavier elements into space, enriching the interstellar medium. Additionally, processes like neutron capture during these explosive events contribute to the creation of even heavier elements.
What happens with fusion of heavier element?
When heavier elements undergo fusion, they release energy in the form of light and heat. This process can only occur in extreme conditions, such as the high temperatures and pressures found in stars or during a thermonuclear reaction. Fusion of heavier elements can lead to the formation of even heavier elements and can release a tremendous amount of energy.
Did gravity pulled the atoms together to form heavier elements?
Yes, gravity plays a role in pulling atoms together in stars to form heavier elements through nuclear fusion. In the intense pressure and temperature conditions of a star's core, lighter elements like hydrogen fuse together to form heavier elements like helium, carbon, and oxygen.
How are elements heavier than hydrogen formed?
Elements heavier than hydrogen are formed through nuclear fusion processes in stars. When lighter elements fuse together in the intense heat and pressure within a star's core, they can form heavier elements. This process continues throughout a star's life until elements up to iron are created. Elements heavier than iron are formed through supernova explosions or in the collisions of neutron stars.
What were the heavier elements in the universe for by?
Heavier elements in the universe were primarily formed through processes such as stellar nucleosynthesis and supernova explosions. Inside stars, lighter elements like hydrogen and helium fuse under extreme temperatures and pressures to create heavier elements up to iron. Elements beyond iron are generally formed during supernova events, where the extreme conditions allow for rapid neutron capture processes (r-process). These heavier elements are then released into space, contributing to the formation of new stars, planets, and ultimately, life.
Define the stellar theory?
If your referring to Stellar Nucleosynthesis, then its when stars fuse the smaller elements (Hydrogen,Helium) to make the heavier elements (iron, gold, silver,zinc, etc).
Why do fuel is required for fusion?
Technically, any elements less massive than iron can fuse together; however, practically it is easier to fuse the lightest elements (Hydrogen, Helium...), which also give higher energy yields. Any elements which are heavier than iron (or are iron) will not fuse, and instead decay via nuclear fission.
What is the process that produces elements in a stars?
Elements in stars are produced primarily through nuclear fusion processes. In the core of a star, hydrogen atoms fuse to form helium under immense pressure and temperature, releasing energy in the process. As stars evolve, they can fuse heavier elements, creating carbon, oxygen, and even heavier elements in more massive stars. Eventually, during supernova explosions, these elements are dispersed into space, contributing to the formation of new stars and planets.
What is the source of all the elements in the universe that are more massive that iron?
The only thing that can fuse lighter elements into something heavier than iron is the explosion of a super-nova star. The problem is something called the "packing fraction". If you fuse light elements like hydrogen into heavier elements like helium, it generates energy; this is how a star works. When the star gets old, it collapses a little, heats up a LOT, and begins to fuse helium into carbon. This releases energy too, but not as much. As you fuse heavier and heavier elements, you get less and less energy out - until you get to iron. From the standpoint of nuclear reactions, iron is as "dense" as things get. Fuse elements together into something heavier than iron, and you must put energy IN to drive the reaction. So in a dying star, getting hotter and hotter and fusing heavier and heavier stuff, at some point it starts fusing iron - and this sucks energy OUT OF the star. Instead of the core of the star feeding energy out to the rest of the star, the core starts sucking energy from the rest of the star into the core, as iron becomes heavier elements like gold, lead, uranium, and even heavier exotic elements. So the middle levels of the star explode in two directions in the supernova - IN, to feed energy to the core to continue the generation of heavy elements, and OUT, to blow the remainder of the star into space. Some of the core elements collapse into a neutron star or a black hole, while the remainder of the core material is blown out into space. Millions or billions of years later, that gold dust or lead dust or uranium dust will fall into another planetary nebula, and form planets - planets like Earth. Every atom of ANYTHING heavier than helium has been through a star - and every atom heavier than iron has escaped from the core of a supernova explosion!
