2021-07-13

Astronomers discovered four exoplanets orbiting a pair of young stars

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Astronomers discovered four exoplanets orbiting a pair of young stars

These planets are described as not being newborn, but they have not settled down either. Astronomers hope that learning more about planets in the teenage stage can help them understand older planets in other systems. TOI 2076 and TOI 1807 are about 130 light-years from the earth, and there is a distance of about 30 light-years between them. These two stars are located in the northern constellations of Bougainvillea and Canis.

The two stars are too far apart to orbit each other, but they have a common motion, indicating that they are related or born from the same gas cloud. Both stars have experienced stellar flares, with much greater energy and more frequent flares than the sun produces. The two stars also produce ten times more ultraviolet light than when they reached the age of the sun.

Astronomers believe that the sun may have been equally active at some time in the past, and these systems can provide a window into the early conditions of our solar system. TOI 2076 was originally discovered by Alex Hughes in an undergraduate project at Loughborough University in the United Kingdom. The research team discovered three “mini-Neptunes”, which are the world orbiting stars between the diameters of the Earth and Neptune. The innermost planet is called TOI 2076 b, which is about three times the size of the Earth and orbits the star once every ten days. TOI 2076 c and d are a little more than four times the size of the earth, orbiting the star every 17 days.

TOI 1807 has only one known planet, called TOI 1807 b, which orbits its star every 13 hours. Astronomers say that exoplanets with such short orbits are very rare, and TOI 1807 b is the youngest example ever discovered.