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Stellar Evolution (Nebula (Protostar (Main Sequence Star (Red Giant (Stars…
Stellar Evolution
Nebula
Protostar
Main Sequence Star
Red Giant
Stars with less mass
Stars with more mass
supernova
blackhole
neutron star
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it begins when a supernova happened and leaves just the core. The matter expels and explodes.On the cold side of the h-r diagram because it's no longer burning.The neutron star never demolishes. If the star is smaller it with become a neutron star if it is bigger it will become a black hole.
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this stage starts when a star goes supernova. In this stage the matter implodes on itself. It will be the top bottom right of the h-r diagram. this stage only ends when When the star runs out of gravity. If the star is big in mass or not it will change what happens.
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It begins when a star is at the end of its lifetime it explodes because it runs out of elements to make. It all gets pushed out and explodes from the core. It’s much much higher than the red supergiant on the h-r diagram. It ends when there is only a neutron star left. If the neutron star is big in mass it will become a black hole
White Dwarf
Black Dwarf
A white dwarf stops emitting heat and light. It is one the way bottom right because it is really cold and it doesn’t exist yet.
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A red giant turns into a white dwarf because it is nearing the end of it’s life. The hydrogen burned off and it vanishes. The gravity makes the star collapse. A white dwarf is one of the coldest. It appears on the bottom left of the diagram. A white dwarf stops emitting heat and light. It will turn into a black dwarf but 97% of white dwarfs die white dwarfs.
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Planetary Nebula
When the sun sheds some of its outer layers, the shell of diffuse gas will turn into a planetary nebula
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This stage begins when a star is coming to the end of its lifetime.the star runs out of hydrogen and makes heaver elements, The matter spreads out from the core and gets hotter because it can’t make elements anymore. It ends when either the star explodes or all of the mass leaves and it becomes a white dwarf. If it's smaller in mass it becomes a white dwarf and if it is bigger it will explode and become a black hole.
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It begins when its fully grown up kinda in adulthood. The elements are pulled together and stay together for a long time. On the H-R diagram it can be anywhere from the left to the right. It ends when the star gets older and becomes a red giant. Nothing affects it.
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The stage begins because a nebula creates some stars it is when light atoms squeeze under pressure. They have helium and hydrogen to get lithium. The elements get pulled together by gravity. On the H-R diagram they are all the way to the right. That means they are colder and the brightness isn’t that high. The stage ends because it grows up into a main sequence star. It then becomes into a main sequence star.
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The dust and gas condense into giant clouds. The hydrogen gas is being pulled together by gravity and it starts to spin. On the H-R diagram it is all the way to the right. When they start forming even more there are spots in the nebula and a star begins to form and the nebula that was once there turns into many stars. The stars become into a protostar.
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