2023-07-09 17:50:49
The study identified 11 chemical elements in the atmosphere of a very hot exoplanet WASP-76 b, and the results showed that the overall composition of the planet reflects the formation of the protoplanetary disk from which it was formed, and that the high-temperature elements formed by evaporating rocks in the atmosphere, and interestingly, that The team also found the absence of some elements that require high temperatures to evaporate. Note, leading to the hypothesis that WASP-76 b may have swallowed material from a Mercury-like planet. An international team led by Stéphane Pelletier, a student at the University of Montreal’s Trottier Exoplanet Research Institute, recently announced a detailed study of the superhot giant exoplanet WASP-76 b. Using the Gemini-North telescope, the team was able to detect and measure the abundances of 11 chemical elements in the planet’s atmosphere. Among them are rock-forming elements unknown to giant planets such as Jupiter or Saturn in mountain systems. The team’s research has been published in the journal Nature. “It’s rare for an exoplanet hundreds of light-years away to teach us something regarding our solar system that we can’t, and that’s the case with this study,” Pelletier said. WASP-76 b is an alien world that reaches extreme temperatures because it is 634 light-years away from its parent star, a massive star in the constellation of Pisces: Mercury is regarding 12 times closer to the Sun, similar in mass to Jupiter, but six times more massive, and almost “bulgy”. “Fully.” Since its discovery by the Wide-Angle Planet Search Program (WASP) in 2013, several teams have studied it and identified the various elements in its atmosphere. In a study published in the journal Nature in March 2020, the team also found an iron signature. And the hypothesis that iron rain might exist on the planet. Because it is so close to its star, WASP-76 b’s temperature is well over 2,000 degrees Celsius. At these temperatures, many of the elements that make up rock on Earth (such as magnesium and iron) vaporize and exist as gases. Studying the high altitudes of this alien planet provides unprecedented insight into the presence and abundance of rock-forming elements on giant planets, since these elements are low in the atmosphere and undetectable on cold giant planets like Jupiter. Discover. The abundances of several elements, such as manganese, chromium, magnesium, vanadium, barium and calcium, that Pelletier and his team measured in the atmospheres of exoplanets closely match those in stars like our sun. This abundance is not random: it is a direct product of the Big Bang, followed by billions of years of stellar nuclear formation, so scientists measure all stars to have roughly the same composition, but differ from the composition of rocky planets like Earth. It is created in a more complex way. The results of this new study show that giant planets can maintain an overall composition that reflects the composition of the protoplanetary disk from which they formed.
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