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The artist’s impression of superior external planets. | Credit
An external reconnaissance satellite was found in Chile in Chile.
“It is a small addition to the already long list of well -known planets, but such discoveries are necessary to improve our understanding of the mechanisms of planet formation and development,” said Jose Rodriguez of the Porto Institute of Astronomical Physics, which led the study in A: statement. “a lot [planets] There will be a need to turn our hypotheses into scientific certainty. “
the ExoplanetTOI-512B, 218 Light years far. It was identified for the first time before Ties In 2020, which witnessed the crossing of the planet, or moving regularly in front of its star, it prevents some of the star’s light from reaching our point of view in the universe. Based on the amount of light banned, astronomers measured the radius to-512B to be 1.54 times Earth size.
To confirm that TOI-512B is a real planet, not a false positive resulting from activity on the star, espresso (Electle Spectrograph for Exoplanets rock and stable spectral observation) tool Very large telescope Measuring the radial speed of the world star. This is the “style” in the star rotation resulting from the danger of the planets that wandered on the star. Espesso measurements of TO-512B mass determination to be 3.57 times the number of Earth.
Knowing that its radius and mass, astronomers can then calculate the average TO-512B density, and define it for a large density of 5.62 grams per cubic centimeter. This is more intense than landWhich is average density of 5.52 grams per cubic centimeter.
If TO-512B is the size of the Earth with this density, we will conclude a strong rock planet-but to-512B is larger and more large than the Earth, so the story is more complex.
TOI-512B stars every 7.1 days at a distance of 9,863,797 km (6,129,079 miles). This means that it becomes a fairly hot weather – it is very close to its star in A suitable area for housingReceive 112 times from the heat from its star as the Earth does. Its size also puts the least called researchers.Hot Neptune Desert“
Astronomers find external planets of countless sizes and masses, but it seems that there is a dramatic scarcity in the worlds between about 1.8 and 2.4 times the radius of the Earth. This is the aforementioned desert, and one theory is that Neptune-The worlds rich in gas and ice migrate to their star, and the star radiation blows their atmosphere, which removes a lot of gas and leaves a smaller world at the end of the operation.
The Star Toi-512, in the constellation of the southern hemisphere in Columba, the dove. | Credit: Jose Rodriguez
Another possibility is that the remaining heat of the planet formation leaks from the inside and to its thick gas, and heating it so that it can escape more easily. This is indicated as the loss of the basic powered mass.
TOI-512B could have been a Neptune-like world who lost most of the gas. Based on its density, mass and size, the Rodrigues team designed what the inner structure of the planet might be. They concluded that the best suitable model describes a small inner heart that makes up 13 % of the planet’s mass, a cloak that contributes 69 % and a water layer of up to 16 % of the planet’s mass, with 2 % remaining on the engraved gas layer now. Compare this to the ground, where the mass diameter of the water is only 0.02 %.
However, if TOI-152B is reduced by star radiation, there will be no water or atmosphere at all. Instead, the Rodrigues team indicates that a group loss that works with basic energy is the best explanation, especially for TOI-152b of 8.235 billion years (albeit with uncertainty of 4.386 billion years), because the collective act of basic energy is a process that can last in billions of years.
This does not mean that all the planets that pass through the Neptune’s hot desert lose their gas envelopes in this way. Its invasive layer is likely to be removed by one or both solar radiation and the losing mass of the basic energy, depending on the planet and the star. As Rodriguez mentioned at the beginning of this article, astronomers need many examples before they can start drawing solid conclusions.
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The study also excluded a second candidate planet that was hurt in TESS notes. As for follow -up, the planet may be far and very difficult for James Web telescope for space To perform the spectral analysis of transit – that is, studying the planet’s atmosphere when this planet operates its star and some stars light is filtered through the air – with the presence of the Rodriguez team, indicating that this process with JWSt may be “boring”. Instead, they suggest the end of the Andes (Aramezon High Sifting) at 39 meters (128 feet) (128 feet) next (128 feet) Very large telescope At the European Southern Observatory in Chile may have better luck.
The results were published about TOI-512B on March 25th Astronomy and astronomical physics.
