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 ...

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 ...

3 on the preprint server arXiv. Helium-rich subdwarf O stars (He-sdOs) are hot compact stars in a pre-white dwarf ...

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 ...

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 ...

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

Using ESA's XMM-Newton satellite and NASA's Chandra spacecraft, German astronomers have observed a supersoft X-ray source ...