Debris disk
Star Spectral class Distance ( ly ) Orbit ( AU )
Epsilon Eridani K2V 10.5 35-75
Tau Ceti G8V 11.9 35-50
Vega A0V 25 86-200
Fomalhaut A3V 25 133-158
AU Microscopii M1Ve 33 50-150
HD 181327 F5.5V 51.8 89-110
HD 69830 K0V 41 < 1
HD 207129 G0V 52 148-178
HD 139664 F5IV-V 57 60-109
Eta Corvi F2V 59 100-150
HD 53143 K1V 60 ?
Beta Pictoris A6V 63 25-550
Zeta Leporis A2Vann 70 2-8
HD 92945 K1V 72 45-175
HD 107146 G2V 88 130
Gamma Ophiuchi A0V 95 520
HR 8799 A5V 129 75
51 Ophiuchi B9 131 0.5-1200
HD 12039 G3-5V 137 5
HD 98800 K5e ( ? ) 150 1
Known belts
Belts of dust or debris have been detected around many stars , including the Sun , including the following :
A debris disk (American English), or debris disc (Commonwealth English), is a circumstellar disk of dust and debris in orbit around a star. Sometimes these disks contain prominent rings, as seen in the image of Fomalhaut on the right. Debris disks have been found around both mature and young stars, as well as at least one debris disk in orbit around an evolved neutron star. Younger debris disks can constitute a phase in the formation of a planetary system following the protoplanetary disk phase, when terrestrial planets may finish growing. They can also be produced and maintained as the remnants of collisions between planetesimals, otherwise known as asteroids and comets. By 2001, over 900 candidate stars had been found to possess a debris disk. They are usually discovered by examining the star system in infrared light and looking for an excess of radiation beyond that emitted by the star. This excess is inferred to be radiation from the star that has been absorbed by the dust in the disk, then re-radiated away as infrared energy. Debris disks are often described as massive analogs to the debris in the Solar System. Most known debris disks have radii of 10-100 astronomical units (AU); they resemble the Kuiper belt in the Solar System, but with much more dust. Some debris disks contain a component of warmer dust located within 10 AU from the central star. This dust is sometimes called exozodiacal dust by analogy to zodiacal dust in the Solar System.