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The nascent planet of the star PDS 70

Astronomers have obtained the first direct the nascent planets, moving in the protoplanetary disk of the young star.

Scientists first made a direct the nascent planet. It is in the protoplanetary disk of a young dwarf star PDS 70.

This achievement expands the knowledge of how planetary systems are formed and will also help to test theories of planet formation. Корреспондент.net tells details.


The emerging planet will help scientists

July 2 in the journal Astronomy and Astrophysics published the results of observations of the dwarf young star PDS 70, which is 370 light years from the Solar system. For example, the nearest star Proxima Centauri is about 4.22 light years.

About the study is described on the website of the European southern Observatory, whose Very large telescope (European Southern Observatory’s Very Large Telescope, VLT) two years ago and have recorded the birth of the planet.

It was called PDS 70b because astronomers name the planets open in the name of the star around which it revolves, adding lowercase letters of the Latin alphabet, starting with “b”.

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Star PDS 70, around which the nascent planet / ESO

In the study, which was conducted by the German Institute of astronomy, max Planck, said that the discovery confirms one of the main astronomical theory that planets are born from disks of gas and dust.

Mass PDS 70 is estimated at 0.76 solar masses, its age reaches 5.4 million years. The protoplanetary disk of the star was opened in 2006; the average radius of the disc 140 astronomical units.

In 2016, close to the star, scientists have discovered a bright point of light and the traces of the gap in the protoplanetary disk around it. This phenomenon indicates the presence of an object, the force of gravity which is sufficient to absorb the surrounding material. This was the birth of a new planet.

“See this is the dream of every astronomer,” said a member of the research group of Andre Mueller.

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Observations in the near infrared range has helped to open the nascent planet PDS 70b, surrounded by its own accretion disc. Her movement and created a gap in the protoplanetary disk around the star.

The mass of the planet was estimated from two to 17 Jupiter masses, radius, from 1.4 to 3.7 radius of Jupiter, temperature of the outer layers in the 1000-1600 degrees Kelvin, which is hotter any planet in the Solar system.

The planet is located at a distance of 22 astronomical units from the star, which coincides with the distance from Uranus to the Sun; one revolution around the star PDS 70b makes for 118 earth years.

The opening will allow you to return to previously studied stages of formation of other planets and to elucidate the mechanism of their appearance.

In addition, the processes occurring around the planet PDS 70b will enable the astronomers to simulate how any Solar system.

Scientists believe that despite differences in mass between Jupiter and PDS 70b, the mechanism of the birth of these celestial bodies should be similar.


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