Binary system with triple stars also contains a planet

Binary system with triple stars also contains a planet

While using Kilodegree Extremely Little Telescope (KELT), astronomers have managed to find an exoplanet in a triple star system. The exoplanet (a gas giant) revolves around a star and there is another binary system nearby. Scientists recently discovered a planet of the size of a Jupiter that is orbiting one of the stars and it has been named KELT-4Ab.

The three stars are named as KELT-A, KELT-B and KELT-C and the planet called KELT-4Ab orbit KELT-A. When seen from the planet, KELT-A appears 40 times bigger to the sun when seen from earth. This happens because KELT-A is far too closer to newly discovered planet.

On the other hand, other two stars KELT-B and C orbit each other and appear very smaller when seen from the new planet. KELT-A is also brighter than other two stars and serves as sun to the planets orbiting it.

The new discovery gives a chance to understand how the plant managed to orbit around its sun this close. KELT-4Ab is a gas giant which takes approximately three days to make to orbit KELT-A. The other two stars take nearly 30 years to orbit one another and both together take around four thousand years to orbit KELT-A. The description of the new star was given in the astronomical journal.

The triple-star system offers a unique opportunity for scientists trying to understand how it is that gas giant KELT-4Ab manages to orbit so close to their star. With the Kilodegree Extremely Little Telescope and several other telescopes, astronomers have led to the discovery of a distant star which is actually a binary.

The KELT-4 system lies about 685 light-years away in the constellation Leo. Earlier believed to have only one star, but it contains more stars.


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