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Photo: eso.org
The planet was born near the star PDS 70
Astronomers received the first direct image of the emerging planet moving into the protoplanetary disk of the young star.
Scientists first made a snapshot of the emerging planet. It is in the protoplanetary disk of a young dwarf star PDS 70.
This achievement expands knowledge of the formation of planetary systems and also helps to test the theory of planetary formation. Correspondent.net tells the details.
The Emerging Planet Will Help Scientists
July 2 in the Journal Astronomy and Astrophysics Publishes Observations of A young dwarf star PDS 70, located 370 light-years away from the solar system For example, Proxima Centaure's proximity is almost 4.22 light-years away.
It was named PDS 70b, since astronomers give names to planets opened by the name of a star around which the planet rotates, adding tiny letters to the Latin alphabet starting with "b . "
PDS 70 star around which the emerging planet is spinning // Photo: ESO
The Max Planck Institute of Astronomy study indicates that the discovery of the planet is confirmed one of the main astronomical theories – that the planets were born from gas dust discs.
The mass PDS 70 is estimated at 0.76 mass of the Sun, its age reaches 5.4 million years. Star Planet was opened in 2006; The average radius of the disc is 140 astronomical units.
In 2016, near the star, scientists discovered a bright spot of light and tear marks in a protoplanetary disk that surrounds it. Such a phenomenon indicates the presence of an object whose gravity is sufficient to absorb the surrounding material. It was the birth of a new planet.
"Seeing this is every astronomer's dream," said Andre Müller, a member of the research group.
Near-infrared observations revealed the emerging planet PDS 70b, surrounded by its own accretion disk. His movement created a space in the protoplanetary disk around the star.
The mass of the planet is estimated from 2 to 17 masses of Jupiter, a radius of 1.4 to 3.7 radius of Jupiter, the temperature of the outer layers – from 1000-1600 Kelvin, which is warmer than 39. around any planet in the Solar System. ]
The planet is located at a distance of 22 astronomical units from a star that coincides with the distance from Uranus to the Sun; A revolution around the star PDS 70b takes place in 118 Earth years.
The opening will allow us to return to the previously studied stages of formation of other planets – and to discover the mechanism of their appearance.
In addition, the processes that take place around the PDS 70b planet will allow astronomers to simulate the way the solar system has appeared.
Scientists believe that, despite the weight differences between Jupiter and PDS 70b, the mechanism of birth of these celestial bodies should be similar.
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