Single Stars
 
 
A magnetic cataclysmic binary/variable of  the DQ Her type See also
A magnetic cataclysmic binary/variable of  the AM Her (or polar) type
A polar cataclysmic binary/variable with a brown dwarf orbiting a white dwarf
Intermediate Polar (2002)  This picture shows a magnetic cataclysmic variable called an intermediate polar. The white dwarf and its magnetic field are spinning around very quickly where the centre of the accretion disc would be, removing its central regions. In its place is a 'curtain' of gas, accreting from the inner edge of the disc and flowing onto the magnetic poles of the white dwarf.