White dwarfs typically have a radius just .01 times that of our own sun, but their mass is about the same. Stars like our sun fuse hydrogen in their cores into helium. White dwarfs are stars that ...

If a white dwarf cools completely, to the point that it no longer emits any light or heat, it becomes a black dwarf, a dense ...

What can binary stars comprised of two different types of stars teach astronomers about stellar evolution? This is what a ...

Helium-rich subdwarf O stars (He-sdOs) are hot compact stars in a pre-white dwarf evolutionary state. They are the natural ...

thought to be in the process of gravitational contraction before its arrival at the main sequence where it will begin to fuse hydrogen into helium. White dwarf—The hot, collapsed core of a red ...

At their hottest, the stars will have hydrogen atmospheres, but as the stars cool over time they tend to have helium atmospheres. But typical white dwarfs don't have one side of the star devoted ...

The peculiar double-faced nature of this white dwarf might be due to the interplay of magnetic fields and convection, or a mixing of materials. On the helium side, which appears bubbly ...

Caption The figure represents the temporary hydrodynamic development (projection in the X-Y plan) of the binary system made up of a helium white dwarf and the core of a red giant, from the zero ...