A distant blue star hosts one of the most exoplanets known to science

A distant blue star hosts one of the most exoplanets known to science

Exoplanet WASP-189b has an artistic impression of orbiting its host star, which glows blue.

Exoplanet WASP-189b has an artistic impression of orbiting its host star, which glows blue.
Image: That’s it

The newly deployed CHEOPS space telescope has completed its first observations Exoplanet discovers some fascinating new information about Ultra-hot Jupiter, also known as WASP-189b.

Host Jupiters are Jupiter-like exoplanets located close to their host stars, hence their name. Ultra-hot Jupiters are basically the same, but, As you are Maybe ess hit, they are hotter. In 2018, astronomers will use ground-based WASP-STelescope in South Africa Found An ultra-hot Jupiter called WASP-189b, U.S.Like anything I’ve seen before.

Two years later, the brand is in usespanking-The new Characterizing Exoplanet Satellite (Chiops) space telescope and astronomers are looking into this celestial wonder with new eyes, modifying what we know about this extraordinary exoplanet, while at the same time beginning to make this European space telescope’s astonishing potential, just amazing. Observations made last April.

In fact, Chiopes are “very accurate” compared to Earth-based telescopes, explained Monica Lendl, an astronomer at the University of Geneva and author of a new study, in an email. “Since CHEOPS is observed from space, it does not have to look through the Earth’s atmosphere, So the light will not be disturbed due to air turbulence. ”

Chiopes, a collaboration between the European Space Agency and the Swiss Space Agency, is designed only to detect and observe exoplanets, and by immersing itself in the starlight it detects the potential sign of an exoplanet passing in front (i.e. transit mode). CHEOPS will also learn about previously discovered exoplanets, such as the WASP-189b here.

“Chiops have a unique” follow-up “role in studying such exoplanets,” said Kate Isaacs, a Chiops project scientist at Issa and co – author of the new study. “It searches for the orbits of the planets found on Earth and, where possible, will more accurately measure the size of the planets already known for their transmission of host stars.”

A new one Paper The first formal inquiry into the space telescope was published in Astronomy and Astronomy.

WASP-189b is located at 322 Lite-Libra in the Southern Hemisphere is years away in the constellation. This ultra-hot Jupiter is in orbit around the A-Type Star HD 133112 Glows blue. At a distance of just 4.7 million miles (7.5 million km) from the host star, the exoplanet would take 2.7 days to complete orbit. Given this attractive setting – about 5% off Sun to Earth – WASP-189b is too hot, new CHEOPS data revising previous estimates.

The illustration for an article on a distant blue star is one of the most exoplanets known to science

Image: That’s it

The temperature of WASP-189b is actually hard to find, Because this gas is giant Absolutely clear and causes conflicting data between himself and the host star. To overcome this, Lendl and her colleagues waited for the Nigutions, in which the planets passed their host stars from our point of view (as opposed to the transit method). This allowed scientists to better understand the brightness of the exoplanet, which allowed it to pick up its temperature.

“WASP-189b is one of the hottest gas giants known to exist,” Lendel said. “With CHEOPS, we can determine the daylight brightness of the planets and find that the light emitted by them corresponds to a planet with a temperature of 3,200 degrees Celsius. [5,800 degrees Fahrenheit]. ”

It is intense; Our sun is 2,000 degrees Celsius (3,630 degrees F) hotter than this burning exoplanet. In fact, WASP-189b is hotter than some red dwarf stars, cooking at temperatures below 3,000 degrees Celsius (5,430 degrees F). Any current life on this planet is possible Basically no, even iron turns to gas at this intensity.

Few planets are known to be hot. WASP-189b is also the brightest hot Jupiter known to scientists.

Researchers The mass of the exoplanet was modified and found to be about twice as heavy as Jupiter. They updated the diameter of WASP-189b, Finds that it is 1.6 The width of Jupiter, Or 139, 000 miles (224, 000 km), which is slightly larger than previous estimates.

Star, HD 133112, Not perfectly circular – it’s actually a kind of square, falling in the equator, It is very cold compared to the polar regions. The speed of the star Spining The resulting concentrated tidal forces contribute to this Strange shape, note the authors of the study.

Interestingly, WASP-189b is in an oblique orbit, which means that it does not have the equatorial plane of the star. Actually, it is Really Wrongly designed and zoomed in on the polar regions of the star. This is an important observation because exoplanet is likely to formrther out Over time it slowly migrated inside. This trek to the host star happened Either Due to the gravitational influence of other planets in the same system Or Researchers speculate on the effect of another star.

With the completion of WASP-189b observations, CHEOPS will now focus on the hundreds of other known exoplanets and their host stars, which will further control their mass, size, and orbit. As this inaugural inquiry makes clear, we can expect more from this exciting new space telescope.

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