Neutron Star
This is a neutron star. It results from a supernova whose remnant core is not dense enough to form a black hole. The neutron star is only 10 to 20 kilometers across, but the matter is packed so densely that some protons and electrons are forced together and some electrons remain in a fluid around the star. Other terms for this material are neutronium or "degenerate matter" because normal atoms and elements do not exist within the star, but rather neutron-rich and normally unstable nuclei.
Neutron stars. Pulsars. And occasionally black holes.
Depending on the original mass, either a neutron star or a black hole.
Depending on the original mass of the star and the precise nature of the supernova, the result may be a neutron star or a black hole.
Neutron Star
A supernova may convert to a neutron star
black dwarf
A supernova is a star that has exploded into dust and gas. A white-dwarf is a small, hot, dense star nearing the end of its life, that did not have enough mass to go supernova. So the answer is "none".
The sun is neither a supernova nor a white dwarf. The sun is a main sequence star. A supernova is not a kind of star: it is the explosion of a massive star.
A white dwarf supernova can only happen in binary pairs where the white dwarf rips matter from the larger star and eventually becomes unstable and it collapses in on itself.
No. When the sun dies it will expel its outer layers in a series of gradual pulses and leave behind a white dwarf.
A red giant, otherwise the star that is dieing will just shrink into a white dwarf and eventually disappear.
Neutron Star
Neutron Star
Neutron Star
I think that's a pulsar.
A supernova is a star that has exploded into dust and gas. A white-dwarf is a small, hot, dense star nearing the end of its life, that did not have enough mass to go supernova. So the answer is "none".
When the layers escape into space, this is classified as a planetary nebula. What usually is left behind is a white dwarf.
White Dwarf, Sun, Red Giant, Supernova
It can be as old as 10 billion years. Then it increases to the size of a giant and supernova. After that it turns into a small dense white dwarf.
The sun is neither a supernova nor a white dwarf. The sun is a main sequence star. A supernova is not a kind of star: it is the explosion of a massive star.
A white dwarf supernova can only happen in binary pairs where the white dwarf rips matter from the larger star and eventually becomes unstable and it collapses in on itself.
White Dwarf.
The white dwarf collapses under its own gravity. This starts very rapid nuclear fusion reactions. It explodes as a supernova and "stuff" is scattered into space. Essentially nothing of the white dwarf, as an object, remains.