One of the most strange, one of the over 4,000 exoplanets discovered so far, is Vasp -189B. This ultra-hot Jupiter revolves so close to its star that its surface temperature can be up to 3,200 ° C, which is heated enough to evaporate for iron. Now, astronomers using Cheops Space Telescope have examined the atmosphere of the WASP-189B and found that it is strange like the planet below.
It is not easy to examine the atmosphere of an exoplanet, but in this case, the researchers were able to see the light coming from a very hot star near the pass. “We measured the light coming from the host star of the planet and passed through the planet's atmosphere,” Bibiana Prithin explained in A, the lead writer of the study. statement“The gases in its atmosphere absorb certain wires, similar to ozone, which absorbs some sunlight in the Earth's atmosphere, and thus release their characteristic 'fingerprint'. [the HARPS spectrograph]We were able to identify the related substances. ,
The team found signs of gases including iron, chromium, vanadium, magnesium and manganese. A substance that was indicated and especially complicated is Titanium oxide, which can function in the way the ozone works in the Earth's atmosphere, which absorbs ultraviolet radiation. There were differences between the predictions that the team had predicted and what they were actually found, which suggests that the exoplanet's atmosphere can be affected by complex and strong winds, which contain different layers that are made of various gases.
While there are layers in the Earth's atmosphere, when studying the exoplanet atmosphere, the perception is often that they will be more simple. But this research shows that the matter is not necessary. “In the past, astronomers often assumed that the atmosphere of the exoplanet is present as a uniform layer and tries to understand it,” said co-writer Jens Hoizmakers. “But our results suggest that even intensely radiated huge gas planets have complex three-dimensional structures.”
“We are convinced that these and other types of planets are able to be able to fully understand the same, including more similar to the earth, we need to appreciate their three-dimensional nature of their atmosphere,” co-author Kevin Heng agreed. “This requires innovations in data analysis techniques, computer modeling and fundamental atmospheric theory.”
Published in research journal Nature astronomy,
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