Helium star
= Helium star
A helium star has lost most of its hydrogen-rich envelope and is made predominantly of helium. If massive enough, its core can ignite helium; a lower-mass stripped core instead becomes a <helium white dwarf>.
= Helium star
A helium star has lost most of its hydrogen-rich envelope and is made predominantly of helium. If massive enough, its core can ignite helium; a lower-mass stripped core instead becomes a <helium white dwarf>.