Systems With Dust Disks

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This is a list of star systems detected with debris disks of varying kinds.

  • HD 131488 System - A star containing a temperate dust belt made up of an unknown new material. Belt caused by planetary collisions. One of first systems found with a cold belt that also contains a warm belt. The sixth star found with belt in terrestrial planet zone. One of the smaller stars to have such disks.
  • 2M1207 System - A Planemo orbiting a brown dwarf 172 ly away. The planemo is possibly the first "planet" imaged. A disk around the Brown Dwarf was known, but recently a disk around the Planemo was also detected. It is believed to be glowing hot from a recent collision with a Uranus sized planet. The planemo probably didn't form the way planets do, but rather, in the same manner as binary stars do.
  • 4U 0142+61 System - The first Neutron Star to have a debris disk detected, possibly forming planets.
  • AU Microscopii System - First red dwarf found with a circumstellar disk and the nearest planetforming disk. Also the first system where particle size in disk determined. Constraints on where planets could exist was recently published.
  • BD +20 307 System - Sunlike star with a warm dust disk which may be signs that an Earth-like planet is forming there.
  • Beta Pictoris System - First star found to have a circumstellar disk and the source of most interstellar meteorites in the Solar System and the nearest star with a planet that has been visually detected (61 ly). Contains the youngest known exo-planet, which shows that Jupiter-like planets can form much quicker than previously believed. It is the closest-in exoplanet photographed and is at 8 AU and 7-11 Jupiter Masses and orbits in 20 years. This planet was first hinted at by studying dust disks in 2003 and first photographed in 2003, but it was not confirmed and was lost. It was imaged again in 2008, and became the first imaged exoplanet confirmed to move around its star in 2010. It has an effective temperature of 1,100 to 1,700C, showing that it is still warm and has retained much of its heat from its formation. Evidence of a planetary transit in 1981 was found in record. It was originally thought that a second planet must have caused a tilt in one of the disks, but now it known that the first planet is. Some data suggests the planet is unusually wide, perhaps evidence of a ring system around it. The planet is traveling through a relatively dust-free gap in the debris disk, and thought to be clearing it. The planet is losing momentum as it travels through the debris disk.
  • Cassiopeia A System - A supernova remnant and the brightest extrasolar radio source in the sky. Planets may be forming in the debris field.
  • Cha 110913 System - First planemo (possibly a tiny brown dwarf) found with a protoplanetary disk. Not Nibru and we won't die in 2012.
  • CoKu Tau 4 System - Young star with protoplanetary disk. It was once thought that the youngest known planet could be forming in the hallowed out center, but it turns out that this was due to the center star being a binary star.
  • CW Leonis System - A dying red giant star which has the first evidence for water in another solar system. The water is believed to be the remnants of a Kuiper Belt.
  • Epsilon Eridani System - Nearest single non-red dwarf star to the Sun and the second nearest system with a confirmed planet. The planet is a very elliptical Jupiter-like world. It also has two asteroid belts and a kuiper belt, with evidence of planets in between.
  • Fomalhaut System - Fomalhaut dust disk is observed in unprecedented detail. It appears reminiscent of the "Eye of Sauron" from the Lord of the Rings films. A planet suspected of causing a sharp gap in the ring was suspected and imaged, becoming the first undisputed exoplanet imaged and the first planet since Neptune to be predicted prior to its discovery. The planet orbits about 115 AU and is between Neptune and 3x Jupiter's mass in an eccentric orbit. Planet b was shown to deviate slightly from its predicted path, stirring up some controversy about the planets' existance. Material surrounding the planet may have been imaged, rather than the planet itself, which some say should bump it off the directly imaged list. Also, the Hubble instrument that detected it is damaged and will not be fixed, making it unobservable for a time.
  • G29-38 System - The first White Dwarf found to have a dust disk in 1987 and remains the only one detected for a long time. This disk is now believed to be the result of an asteroid collision.
  • GD 362 System - White dwarf star around which the remains of a shredded earthlike planet may have been detected.
  • HD 98800 System - Infant quadruple star system with a debris disk around only one of its stars and has evidence of planets.
  • HD 100546 System - First protostar found to have a circumstellar disk. There is also evidense for a forming Jovian planet.
  • HD 113766 System - System found to likely be forming an Earth-like planet. This is the first system detected that contains planetesimals. It is also a peculiar binary system where one star has a debris disk, but the other does not.
  • HD 117176 System - One of the six extrasolar systems known to have planets to be first shown to also have a dust disk by Spitzer.
  • HD 128311 System - An orange dwarf star with two jovians (a Jupiter analog detected in 2005 and an eccentric giant in the outer habitable zone) possibly in 1:2 resonance and a dusk disk detected by Spitzer.
  • HD 139664 System - Old nearby sunlike star with narrow kuiper belt similar to solar system's.
  • HD 170146 System - Dust disk much larger than the Solar System's imaged in great detail by Spitzer and Hubble.
  • HD 23514 System - 100 Million year old system in the Pleiades Cluster that contains warm dust which is likely the result of the impact of two earth-like protoplanets.
  • HD 33636 System - One of the six extrasolar systems thought to have planets to be first shown to also have a dust disk by Spitzer. The "planet" was later shown to be a star.
  • HD 50554 System - One of the six extrasolar systems known to have planets to be first shown to also have a dust disk by Spitzer.
  • HD 52265 System - One of the six extrasolar systems known to have planets to be first shown to also have a dust disk by Spitzer. Planet independently discovered by CORALIE and Carnegie teams and is roughly Jupiter-sized in a hot eccentric orbit.
  • HD 53143 System - Old nearby sunlike star with wide kuiper belt similar to solar system's.
  • HD 69830 System - First planetary system found that does not have a Jupiter-sized planet around a normal star (K0 spectrum). Contains 3 Neptunians and the first discovered asteroid belt that is like the size and age as the Sun's. The debris from this belt that was detected was from the breakup of an asteroid, is 20 times as massive as our own, and would cause zodiacal lights 1000 times brighter than we see from Earth. The smallest and outermost planet may be a 10 ME super Earth, is within the habitable zone, and is an inner shepherd for the asteroid belt. Halo 3 features a fictitious moon around this planet.
  • HD 82943 System - Yellow dwarf with two large orbit-crossing Jovians locked in 1:2 orbital resonance that would span the inner solar system, which were disccovered by the Swiss team by 2001. The planets have nearly identical mass (1.8 MJ). Shown to have a dust disk by Spitzer.
  • HD 97048 System - A young star in the Chamelion I Dark Cloud discovered to have a "Flaring" disc of dust.
  • Helix Nebula - The nearest planetary nebula. The dust observed may be from thousands of comets banging into each other.
  • IRAS 4 System - Embrionic star where water source was detected.
  • KH 15D System - System in NGC 2264 that was recently found to "wink", possibly due to a circumstellar disk.
  • LkCa 15 System - One of the two youngest stars (about a million years old) detected with evidence for a planet-forming circumstellar disk. Has an outer dust disk (which would envelop the Solar System) and a thin inner dust disk (which would fit inside Mercury's orbit). The inner disk is somewhat lopsided. Planet b was later detected, the youngest and first direct photograph of a protoplanet. It is a giant planet orbiting at Uranus-like distances and appears as a blue dot. It is about 1,000C and surrounded by a red structure about 500C, which could be material colliding into the protoplanet or being ejected from it. Its mass, and planetary status, still needs to be determined.
  • Mira System - Well known binary star. It was found that material from the dying red giant was being syphoned off by the white dwarf in the system, beginning a new planetary system.
  • Ophiuchus Mixed Up Disk System - The first solar system observed with the inner disk rotating in the opposite direction as the outer disk (not sure what its name is).
  • OTS 44 System - Very low mass Brown Dwarf found to have a circumstellar disk.
  • R 126 System - One of two hypergiant stars (also R 66 System) in Large Magellanic Cloud that have detected dust disks and are possibly forming planets.
  • R 66 System - One of two hypergiant stars (also R 126 System) in Large Magellanic Cloud that have detected dust disks and are possibly forming planets.
  • Stephenson 34 System - Binary Red Dwarf star discovered to have a very old planetary disk. Why haven't planets already formed around it?
  • Tau Ceti System - The nearest single G-class yellow dwarf to the sun. It has five super-Earth sized planets in orbit around it, discovered using a new and very powerful but also controversial technique, and an outer debris disk with ten times more material than our solar system's Kuiper belt has.

Two of the planets in the Tau Ceti system are located on opposite edges of a very liberally described habitable zone, analogous to Venus and Mars. No planet has as yet been detected near the middle of the habitable zone, in a situation similar to Earth.

  • TW Hydrae System - The nearest planet forming age star discovered with a protoplanetary disk. Also the nearest classical T-Tauri star, 176 ly and 10 million years old. It is one of the oldest protoplanetary disks known, and if it ever would form planets, that time would be now. It was thought to have contained the youngest known exoplanet and first known one within its protoplanetary disk, but this was later chalked up to the rotation of starspots. Gives astronomers a glimpse of what the Solar System may have been like in its infancy and test planetary formation theories. Large amounts of water have been detected in this system. They occur in the outer parts of the system where comet formation is easy. It is formed from photodesorption, which liberates water molecules from rocks. They could provide enough water for a thousand Earths. This is the first time the amount of water could be measured.
  • UX Tau System - Of of the two youngest stars detected with evidence for a planet-forming circumstellar disk. Ring-like gaps where planets may be forming were detected.
  • Vega System - Nearby star with one of the first detected circumstellar disks. Recently, it was surmised that this disk was caused by a collision between Pluto sized objects.
  • Zeta Leporis System - A massive young star around which the first direct evidence for an asteroid belt were detected in 2001.

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