What color star along the main sequence will likely end up in a supernova?

Answer 1

Bright white.

The temperature inside a new neutron star is about 1012 Kelvin. However, the huge number of neutrinos it emits carries away so much energy that the temperature falls to around 1 million Kelvin within a few years. Even then, most of the light generated is in X-rays. In visible light, they radiate approximately the same energy in all parts of visible spectrum, and therefore appear white.

Answer 2

A supernova will start of as brilliant bright white, as it cools different parts of it will show in different colours of the spectrum depending on the amount and type of matter.

See link for more information and pictures. Supernova are always white, because they are so incredibly hot and bright.

I am not sure how it would look to the naked eye, but actually, most of the energy emitted by a supernova is emitted as gamma rays - high-energy EM waves that are not visible to the naked eye.
brown

Answer 3

The "color" of a neutron star depends on how hot it is. A young neutron star is so hot it actually emits x-rays (Hence the quotes around color), which require a temperature around 10,000,000°K. As it cools, it emits lower and lower frequency photons, eventually emitting UV, visible, infrared and radar and longer wavelengths.

To the human eye, neutron stars are violet (As all "color" shorter than 400nm looks violet to humans until they cool to around 10,000°K and start emitting in the visible spectrum, although it would look white since it emits the visible spectrum all at the same energy levels. As it cools to around 100°K, it no longer emits visible light and would show its true surface "color."

Answer 4

Supernova are always white, because they are so incredibly hot and bright.

Answer 5

A blue star will most likely end in a supernova.