What is the life cycle for small, large and extra large stars?

Question

i would also like to know about a stars life and death?
Thanks! Your Help is Appreciated!

Answer 1

Main Sequence Stars - 10 to 20 Billion years life span
Orange Stars - 20 Billion years life span
Red Dwarf Stars - 60 Billion years life span

In Stars, hydrogen gas is collected into a large ball. The intense pressure of all that gas pressing down on the center of the ball, and the weight of all that gas cause a fusion process similar to that in a nuclear reactor which changes the hydrogen into helium. This fusion of hydrogen into helium gives off light radiation, heat radiation and many other types of radiation like X Rays and Gamma Rays. The hot helium in the core rises to the surface of the Star, and is replaced by more hydrogen sinking down to replace it. The process goes on for a very long time until a large percentage of the hydrogen is used up. At that time the Star becomes brighter and bigger and redder. The existing helium is fused into carbon and our Main Sequence Star or Dwarf becomes a Red Giant which absorbs everything in its local vicinity. Things like planets and moons of planets would all be absorbed into the Red Giant. This process takes about like 10 - 20 Billion years to begin happening. Our Sun, for example has only burned up a few percent of its available hydrogen and can be expected to burn as we see it for another 10 Billion years or so (I think).

Ref: Guide to Skywatching, David H. Levy, Fog City Press, San Francisco, Calif., 1994

Answer 2

Well the size of the star isn't the important thing (size can change over the course of a star's life), but the mass. The most massive stars are the class O stars. They are so large that they burn through their hydrogen very quickly. They can live very short lives, on the order of millions of years (short by astronomical standards). They tend to die in spectacular supernovae and leave behind black holes.

Essentially, the larger the star, the shorter it's lifespan on the main sequence. Stars the mass of the sun will spend about 10 billion years on the main sequence, and end their lives as white dwarves, eventually becoming black dwarves (none exist yet, as the universe is not old enough for them to exist). Larger stars will eventually collapse into neutron stars, very small and extremely dense stars.

More massive stars tend to turn into black holes at the end of their lives as described above.

Answer 3

the bigger, brighter and hotter a star, the more quickly it progresses through its life cycle. this is because the more matter a star contains, the gravitation trying to collapse that matter inwards is greater, and it takes much more energy for a large star to support itself against this collapse

a blue supergiant such as zeta puppis will only take a few million years to go from initial fusion to supernova and black hole. the sun, midway through the spectral range, will last for 10 billion years before becoming a white dwarf. finally, a red dwarf like proxima centauri is capable of lasting into the trillions of years before it will exhaust its hydrogen

most stars will end their lives by becoming white dwarfs, which are essentially glowing cinders. white dwarfs are highly compressed (about one ton of mass per tablespoon), so they very slowly radiate residual heat out into space, to eventually fade away into black dwarfs. if the white dwarf is heavy enough, gravity will overcome the weak nuclear force, causing every atom's electrons to merge with the protons, resulting in a neutron star. the largest stars' collapse is so violent, a black hole is created; an infinitely dense singularity attractive enough to prevent everything, including light, from escaping

Answer 4

it is the lifecycle of fantastic stars. yet they only bypass supernova and bypass away the two a neutron star or a black hollow. A nova is very a distinctive phenomenon. the properly suited lifecycle of hassle-free stars is this: Nebula->protostar->considerable sequence star->pink large->white dwarf + planetary nebula. You defined the lifecycle of very vast stars and because they are fairly uncommon the can purely be seen fantastic. A white dwarf isn't a celebrity in any respect. it fairly is the lifeless gleaming corpse of a large call. It doesn´t generate any potential. It´s warmth is the relax warmth from the gravitational crunch it experienced for the period of its dying. and because it would not generate any potential it won't be able to be seen a celebrity.

Answer 5

anywhere from a couple hundred years to thousands