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Home » First Ever Image of a Multi-Planet System around a Sun-like Star
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First Ever Image of a Multi-Planet System around a Sun-like Star

BryarBy BryarJanuary 23, 2023Updated:January 23, 2023No Comments2 Mins Read
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This image, captured by the SPHERE instrument on ESO’s Very Large Telescope, shows the star TYC 8998-760-1 accompanied by two giant exoplanets, TYC 8998-760-1b and TYC 8998-760-1c. This is the first time astronomers have directly observed more than one planet orbiting a star similar to the Sun. The two planets are visible as two bright dots in the centre (TYC 8998-760-1b) and bottom right (TYC 8998-760-1c) of the frame. Other bright dots, which are background stars, are visible in the image as well. By taking different images at different times, the team were able to distinguish these planets from the background stars.    The image was captured by blocking the light from the young, Sun-like star (top-left of centre) using a coronagraph, which allows for the fainter planets to be detected. The bright and dark rings we see on the star’s image are optical artefacts.
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There are a huge number of planets circling other stars, but just a few have been directly imaged. The existence of the remainder is concluded from their effects on their stars.

The largest optical telescope on the planet has now spotted a new planetary system, the very first time more than a single planet has been imaged close to a star such as our Sun. Astronomers utilized the European Southern Observatory’s Very large Telescope (VLT) to watch the Sun-like star TYC 8998-760-1, 300 light-years from Earth. Making use of the VLT’s Spectro Polarimetric High-contrast Exoplanet Research (SPHERE) instrument, that has an optical mask known as a coronagraph to block out a star’s light, they could see two planets orbiting it (pictured above), as reported in the Astrophysical Journal Letters. In the above image (center left), a bit of light can be seen from the star, as can the 2 giant planets (right) in addition to a scattering of background stars.

This image, captured by the SPHERE instrument on ESO’s Very Large Telescope, shows the star TYC 8998-760-1 accompanied by two giant exoplanets, TYC 8998-760-1b and TYC 8998-760-1c. This is the first time astronomers have directly observed more than one planet orbiting a star similar to the Sun. The two planets are visible as two bright dots in the centre (TYC 8998-760-1b) and bottom right (TYC 8998-760-1c) of the frame. Other bright dots, which are background stars, are visible in the image as well. By taking different images at different times, the team were able to distinguish these planets from the background stars.    The image was captured by blocking the light from the young, Sun-like star (top-left of centre) using a coronagraph, which allows for the fainter planets to be detected. The bright and dark rings we see on the star’s image are optical artefacts.

The photographs will help astronomers find out how planetary systems change over time. TYC 8998-760-1, at only 17 million years , is a child version of our 4.5-billion-year-old Sun, but their orbiting planets could not become more different. The 2 recently found exoplanets are fourteen as well as six times the size of Jupiter, our biggest planet, and orbit sixteen and thirty two times farther out than Saturn. If this system is likely to develop into something like ours over the next several billion years, astronomers have got some explaining to do.

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