Credit: P. Marenfeld and NOAO/AURA/NSF

Circumbinary Disk (Artist Concept)

This artist concept shows a debris disk that has been observed around an unusual class of interacting binary stars. The type of cataclysmic variable system being studied consists of a highly magnetic white dwarf star (a "dead" remnant star formed from the core of a star like our Sun when it exhausts the available fuel to support nuclear fusion) and a very low-mass, cool object similar to a brown dwarf. The two objects orbit so closely -- about the distance from Earth to the Moon -- that they make a complete revolution about each other in only 80-90 minutes. The white dwarf is Earth-sized but weighs about 60 percent of the mass of the Sun, while the companion star is Jupiter-sized but has about 40-50 times the mass of Jupiter.

Related Link:

• NOAO Press Release

The Spitzer Space Telescope is a NASA mission managed by the Jet Propulsion Laboratory. This website is maintained by the Spitzer Science Center, located on the campus of the California Institute of Technology and part of NASA's Infrared Processing and Analysis Center.