Tag: Disk

A strange dusty disk could hide a planet betwixt three stars

About 1,300 light-years away, a young triple-star system is warping and splitting a disk of dust and gas where planets could one day form. Unlike the flat disk that gave rise to the planets in our own Solar System, the system’s disk consists of three misaligned rings.



a star in the dark: ALMA, in which ESO is a partner, and the SPHERE instrument on ESO’s Very Large Telescope have imaged GW Orionis, a triple star system with a peculiar inner region. Unlike the flat planet-forming discs we see around many stars, GW Orionis features a warped disc, deformed by the movements of the three stars at its centre. This composite image shows both the ALMA and SPHERE observations of the disc. The ALMA image shows the disc’s ringed structure, with the innermost ring (part of which is visible as an oblong dot at the very centre of the image) separated from the rest of the disc. The SPHERE observations allowed astronomers to see for the first time the shadow of this innermost ring on the rest of the disc, which made it possible for them to reconstruct its warped shape.


© Provided by Popular Science
ALMA, in which ESO is a partner, and the SPHERE instrument on ESO’s Very Large Telescope have imaged GW Orionis, a triple star system with a peculiar inner region. Unlike the flat planet-forming discs we see around many stars, GW Orionis features a warped disc, deformed by the movements of the three stars at its centre. This composite image shows both the ALMA and SPHERE observations of the disc. The ALMA image shows the disc’s ringed structure, with the innermost ring (part of which is visible as an oblong dot at the very centre of the image) separated

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Why This Triple-Star System Is Warping, Tearing Its Planet-Forming Disk

KEY POINTS

  • GW Orionis is a unique star system with three stars
  • Researchers have found that its planet-forming disk is warped and broken into rings
  • Research teams are presenting suggestions as to what caused the disk to warp

Astronomers have found the first evidence of a multi-star system essentially tearing apart its planet-forming disk. Research teams are now suggesting possible reasons for the system’s warped disk.

Most stars like our sun are born with siblings. Some have even suggested that the sun was once a part of a binary system. In a new study published in the journal Science, a team of astronomers describes a multi-star system called GW Orionis with three stars, with the inner stars, GW Ori A and B, orbiting each other with a distance of 1 astronomical unit (au) and the outer star, GW Ori C, orbiting the two inner stars at a distance of

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