Astronomers find stars that rip planet-forming disks: techno Thomas

FOR Astronomers have first discovered strange structures around three stars that show that they are destroying a planet-forming disk. These young objects in the GW Orionis system deflect the disk of material where the planet was born and create misaligned or tilted rings.

This system is located approximately 1,300 light years away in the constellation of Orion. Two stars orbit each other every 241 days, with the third orbiting the other two in 11.5 years.

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Launch from IFL Science, Friday (09/04/2020), simulations of the first team showed that the misalignment in the orbits of the three stars created a curvature in the previously flat disc.

Observation using the SPHERE VLT instrument, reconstructed the disc in three dimensions, showing the image of the deeper ring in the rest of the disc. Thus, it is clear that the interior is dramatically curved and that the rings at a sharper angle are separated from it.

Stefan Kraus, professor of astrophysics at the University of Exeter in the UK, said at the same time that the ALMA (Atacama Large Millimeter / Submillimeter Array) enabled research to measure the exact shape of the rings that form the image. By combining this information, the researchers obtained a three-dimensional shape, the orientation of the rings that are not parallel and the surface of the disk is curved.

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The largest outer ring ever seen on a planet-forming disk. The misaligned inner ring contains 30 earth masses of dust, which is certainly enough to form a planet.

“We think that the existence of a planet between these rings is necessary to explain why the disk was torn,” said Jiaqing Bi, author of the article, in the statement. Further exploration of GW Orionis will be needed to confirm this.

(han)