Tuesday , May 11 2021

6 Super Earth found in light years! It will become the nearest nearest ecoplanet of the solar system TechNevs

Give us applause! After half a century of discussion, a study run by the Carnegie Institute of Science in the United States lasted for 20 hours and finally proved that there is a super-Earth called Barnard Star b, only 6 light years from Earth. 99%. When other independent studies succeed with other detection methods, Barnard Star b will become the next closest exoplanet of the Solar System.

At present, the closest star system of the Solar System is a 3-star system with South Gate II (also known as Alpha Centauri, English name Alpha Centauri), which is about 4.3 light-years away, and the closest planet on Earth is the South Gate II system. In Prokima Centauri b, which carries Prokima Centauri, the orbital period is only 11.86 days.

Now, the Astronomical Team of the Carnegie Institute of Science has compiled 20 years of research data, and the surprise is that we have a 99% chance to discover a new world: Super Baronard star only 6 light years. (Barnard star b, or GJ 699 b)!

Barnard's star, as they call it, is Barnard's star, a very small red dwarf star, about 14% of the mass of the sun, which is near the beta constellation star, only 6 light years from Earth. He is highly regarded for his characteristics, for example, it is the fastest star in all known stars, sometimes called Runaway Star, and is self-motivated. It's 1 times faster than the flying star Ursa Major.

▲ Imaginary picture of the artistic "Barnard Star b" around the parent star. (Source: ESO)

During the sixties and seventies, astronomer Peter van de Camp once claimed that Barnard Star should have a gas giant planet, mainly because he discovered the perturbation of Barnard's self-movement. About every 230 days, Barnard's star will outstrip, suggesting that it might be affected by the gravitational power that its huge planet has on orbit. Some astronomers accepted his claims, but another group of astronomers watched the opposition of Peter van der Camp, including George Gatwoud and Heinrich Eichhorn.

So far, the Carnegie Institute of Science has a high degree of confidence to support Peter Van der Kamp's position.

The team used a radial speed detection method for planets using a total of seven instruments, such as the ESO 3.6-meter telescope with high accuracy of radial speeds of the search engine planet (HARPS) and the UV light telescope Ultraviolet and Visual Echelle Spectrograph (UVES), the CARMENES spectrometer of the European Large Telescope .

The principle of radial velocity is that the planet is in the orbit of the star, and if its mass is large enough, the planetary gravity is sufficient to cause a mild momentum to an older star, not only that the gravitational force of the star affects the planet, but the gravity of the planet will be reversed. Affecting stars.

The newly discovered Barnard star of the orbital period is 233 days, which coincides with the perturbation period of Barnard's star. The team estimates that the mass of this giant planet is at least 3.2 times greater than the surface of the Earth, and the surface temperature is about minus 150 ° C. The energy broadcast by Star Nader is only 0.4% of the Sun, so Barnard's star b will become the second closest to Earth, but the degree of habit can still be better than the nearest neighbor.

The test will also have to be confirmed by other independent research groups, such as the Lingri method, but the Carnegie Institute of Science team confirms that the planet is 99% accurate. The next generation of space and terrestrial telescopes will be put into operation after 2020, such as the James Webb of the Space Telescope, and some may even directly paint Barnard Star b and its spectrum, such as the NASA's large telescope with a large terrain infrared telescope (wide field) Infrared telescope (VFIRST), ESA Gaia, etc.

The new article was published in the journal Nature.

Note: The star's self-movement refers to a change in the position of a star in relation to the center of the mass of the solar network over time.

(Source: Source: European Southern Observatory)

Extended Reading:

Source link