The most massive ones. The exact amount of mass requires varies, depending on the type of supernova, and on the element mix of the initial star.
Unlike the other types of supernovae, Type Ia supernovae generally occur in all types ofgalaxies, including ellipticals and they show no preference for regions of current stellar formation - they can occur anywhere in the Milky Way Galaxy.The reason for this is that Type 1 supernovae occur when the remnant of a small star (a white dwarf) accreets enough mass (by gas capture from, or merger with another star) to exceed the Chandrasekhar limit of about 1.38 solar masses. When this mass is exceeded carbon fusion is reignited in the stellar core and the star explodes and as white dwarf stars are to be found everywhere in Galaxies and Globular clusters, the potential for Type 1 supernovae is universal. That said, obviously you would not expect to find White Dwarf stars in current star forming areas (because the dwarf forms at the end of a stars main sequence life). However Galactic rotation mixes old stars with new stars relatively quickly and this separation rapidly blurs.
Stars are expected to end up as white dwarves, neutron stars, or black holes. If you are interested in the stages before that (when the star still produces power), that include red giants, and supernovae.
Supernovae are when very massive stars finally come to the end of their life. They are important events as during the very short period in which the explosion occurs, temperatures and pressures are sufficient to fuse atoms, making heavier elements. Any elements with a nucleus heavier than the iron nucleus would have had to be formed during a supernova explosion.
Less massive stars end up as white dwarfs. More massive stars end up as a supernova or a neutron star or for the really massive stars...as a black hole. As a star ends its time in the main sequence it either becomes a Red Giant and end its life as a White Dwarf or becomes a White Super Giant and ends its life in an explosion (supernova) and if it's really dense it becomes a neutron star or a black hole as mentioned above.
Main sequence stars turn into red giants towards the end of their lives, as the hydrogen fuel gets used up.
Massive Stars.
Very large ones.
many stars die as a supernova. not really able to determine which types, because they die at random, but if they dont die as supernovas, they just collapse and disappear into one point in the sky.
Unlike the other types of supernovae, Type Ia supernovae generally occur in all types ofgalaxies, including ellipticals and they show no preference for regions of current stellar formation - they can occur anywhere in the Milky Way Galaxy.The reason for this is that Type 1 supernovae occur when the remnant of a small star (a white dwarf) accreets enough mass (by gas capture from, or merger with another star) to exceed the Chandrasekhar limit of about 1.38 solar masses. When this mass is exceeded carbon fusion is reignited in the stellar core and the star explodes and as white dwarf stars are to be found everywhere in Galaxies and Globular clusters, the potential for Type 1 supernovae is universal. That said, obviously you would not expect to find White Dwarf stars in current star forming areas (because the dwarf forms at the end of a stars main sequence life). However Galactic rotation mixes old stars with new stars relatively quickly and this separation rapidly blurs.
Massive Stars.
Stars are expected to end up as white dwarves, neutron stars, or black holes. If you are interested in the stages before that (when the star still produces power), that include red giants, and supernovae.
No, but some stars can end their lives by becoming a black hole.
They are not. A supernova is an explosion of a star. Blue stars usually end their lives in such explosions.
Heavy stars go supernova at the end of their lives.
No. Supernovas are cataclysmic eruptions from massive stars that have come to the end of their lives. See related questions
They are not. A supernova is an explosion of a star. Blue stars usually end their lives in such explosions.
All stars fuse hydrogen into helium. Near the end of their lives, large stars progress to fusing helium into carbon.