Sentences with phrase «helium white dwarf star»
Not exact matches
H1504 +65 is the hottest white dwarf on record — and the only known star lacking helium and hydrogen.
http://www.sciencemag.org/
«It tells us that nature has found a way that we didn't know to make white dwarf stars without the usual hydrogen or helium surface layers,» Dufour says.
The first so - called helium nova, the possible result of a large white dwarf sucking material from a hydrogen - deficient companion star, may be a precursor to a supernova
Radiation from the white dwarf star, the white dot in the center of the ring, is exciting the helium to glow.
«The formation of such a binary system containing an extremely low mass helium white dwarf has to be the result of interactions and mass loss between the two original stars,» said Howell.
Astrophysicists at UC Santa Barbara are the first scientists to identify two white dwarf stars in an eclipsing binary system, allowing for the first direct radius measurement of a rare white dwarf composed of pure helium.
As US 708 traveled around the white dwarf, the dead star would have stolen its helium.
One of the stars in the newly discovered binary is a relatively rare helium - core white dwarf with a mass only 10 to 20 percent of that of the sun.