White Trillion
White Trillion
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White Trillion
Is the core of the white dwarf star @ NGC 2440 1 trillion degree's Fahrenheit?
I was wondering this because if the surface of our sun is 10,000 F and the core being 27,000,000 wouldn;t that make the core of the white dwarf 970,759, 620 based on its surface temperature being about 359,540.6° Fahrenheit? I was using the relative difference between the surface of our sun and core to get the core of the dwarfs temp's with its surface temp.
A white dwarf is the core remnant of a star.
Your approach does not work because the Sun and a dwarf do not work the same and do not have the same layers.
The Sun produces energy at the core and this energy travels outward. That is why the core is so much more hotter than the "surface". There are convection layers between the outer core and the surface, to carry the energy.
A dwarf star does not produce energy at the centre. The whole star is the core of an older star that has gotten rid of his other layers. When our Sun gets rid of its outer layers (during and around the red giant phase), it will be left with only 40% of its original mass, in the form of it core. The convection layers (with a high temperature gradient) will be gone.
It will continue to emit light, due to the accumulated heat. The centre of the core will still be in the millions of degrees for a while, and it will cool down with time. The "surface" of the dwarf is originally hotter than the present surface of the Sun, simply because the new surface will be the surface of the core.
There will be a lot less difference between the "surface" and the centre of the dwarf, as there is between the surface and the core of our present Sun.
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