Sunday , April 18 2021

Six super districts found in the sun of light! Becoming the second closest alien planet to the solar system |



Let's applaud us! After half a century of discussion, the study led by the Carnegie Institute of Science took 20 hours and finally proved that there is a super district called Barnard Star b, 6 light years away from Earth. 99%. If other independent studies succeed in other detection methods, Barnard Star b will be the second closest alien planet to the solar system.

The nearest solar system to the solar system is the South Gate II (Alpha Centauri, also known as the Alpha Centauri), about 4.3 light-years away, and the closest outer planet to the Earth is the South Gate II system. In the Proxima Centauri b carried by Proxima Centauri, the orbital period is only 11.86 days.

Now the Carnegie Institute of Science's astronomy team has collected 20 years of research, and the opportunity to discover a new world is 99%, a super-world Barnard star, only 6 light-years away. (Barnard's star b, or GJ 699 b)!

Barnard 's star is Barnard' s Star, a very small red dwarf star, about 14% of the sun 's mass near the beta star of the constellation just six light – years from Earth, as the name implies. For example, it is the fastest star on all known stars called the Runaway Star and is self-motivated. It is 1x faster than Ursa Major's flight star.

▲ A hypothetical picture of the super district "Barnard Star b" around the parents. (Source: ESO)

During the 1960s and 1970s, astronomer Peter van de Kamp argued that the Barnard Star should have a giant planet of gas. The main reason for this is mainly because of the discovery of Barnard's self-motion perturbation. Bernard's stars move about every 230 days, suggesting that a giant planet will be affected by the orbiting gravity. Some astronomers accepted their claim, but other groups of astronomers opposed the claims of Peter van der Camp, including George Gatewood and Heinrich Eichhorn.

So far, the Carnegie Institute of Science team has a high degree of assurance that it supports the viewpoint of Peter van der Camp.

The researchers used a radial velocity method to detect planets using seven instruments, such as the HARPS (Hight Range Radial Velocity Planet Searcher) and the Very Large Telescope's UV (Ultra Large Telescope). Ultraviolet and Visual Echelle Spectrograph (UVES), the European great telescope's CARMENES spectrometer.

The principle of spinning velocity is in the process of orbiting the star, and if the mass is large enough, the planet's gravity causes a slight shake of the parent star, and not only the gravitational force of the star affects the planet but also the planet's gravity is. Affects stars.

The newly discovered Barnard star b orbital period is 233 days, which corresponds to Barnard's stellar perturbation period. The mass of this giant planet is at least 3.2 times the Earth's mass and the surface temperature is about 150 ° C. Because the energy emitted by the Nader stars is only 0.4% of the sun, Barnard's star b will be the second closest sun on Earth, but the habit may still be better than the closest neighbors.

This test should also be confirmed by other independent research groups, such as the Lingri method, but a team at the Carnegie Institute of Science confirms that the planet is 99% accurate. The next generation of space and ground telescopes, such as the James Web Space Telescope, will be operational in 2020, with some direct imaging of the Barnard Star b and NASA's large field infrared sky telescope (wide field) infrared surveying telescope (WFIRST) Gaia etc.

This new paper was published in Nature.

Note: The self-motion of a star indicates that the position of the star relative to the center of mass of the solar system varies with time.

(Source: Southern Observatory of Europe)

Extended reading:


Source link