what are the details of the death of a very massive star and low massive star?

Question

thanks!

Answer 1

Very massive stars keep fusing heavier and heavier elements until their cores are made up of iron. When iron fusion begins, more energy is absorbed by nuclear reactions than is released. Robbed of the ability to support itself, the core implodes immediately into a neutron star or for extremely massive stars, a black hole. Either way, the outer layers will be blasted into space at up to 18,000 miles per second, radiating enough energy to outshine all the other stars in the host galaxy put together. When massive stars self destruct, the blasts that destroy them are called supernovae.

Medium and low mass stars die quietly rather than explosively as supernovae. However they can't fuse carbon and oxygen because they lack the mass to do it. Instead the stars expand into red giants, then become unstable and cast off their outer envelopes, leaving an intensely hot core that collapses until it's electrons start bumping into each other. At that point the star stabilizes and becomes a white dwarf. Very low mass stars simply convert their entire supply of hydrogen into helium, then become a white dwarf without expanding into red giants along the way.

Answer 2

A massive 20 solar mass star lives for about 10 million years,uses up all it's fuel and explodes as a super nova.
A one solar mass star continues burning it's fuel for billions of years and slowly dies out.
Our sun is a one solar mass entity,it has lived for More than 4 billion years and will likely be around 6 billion years from now.
It will be an old cinder of itself. Cool,eh?

Answer 3

Very massive stars will end their life as Neutron star or black hole while low mass stars will end their life as white dwarf
high mass stars that is 10times mass as Sun will explode in a supernova and their end it may form black hole or neutron star.
Small stars will become white dwarfs

Answer 4

Hi. Details? Depends critically on the starting mass. But essentially the more mass, the more fuel is needed to overcome the crushing gravity, and the shorter the lifespan.

Answer 5

stars with masses lower than 1.4 solar masses will become red giants and white dwarves. stars with masses greater than 1.4 solar masses will become neutron stars, or if their mass is high enough, they will become black holes. Supposedly stars with masses lower than 1.4 cannot generate enough heat to fuse elements heavier than carbon or oxygen and will swell up, blow off their outer layers and leave a white dwarf core to burn out like an incense stick. Stars with masses greater than 1.4 continue fusing until they reach iron, which takes more energy to fuse than it releases from its fusion. Ideal gas laws state that the inward force of gravity becomes greater than the expansion of the star's gases due to heat, so the star collapses on itself and will generate lots of heat from the compression and release its outer layers in a supernova. the leftover core is compressed into a neutron star or (in stars with masses greater than approx. 5 solar masses) a black hole

Answer 6

Why would we answer this when you dont bother to select a best answer, You just leave them open then they have to go to voting, I see a few of your homework questions left to be voted on,, If you ask questions then select a best answer when your done,

Answer 7

Time to do some reading. Your textbook will have information, so do several websites:
- astronomy.com
- space.com
- wikipedia