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Credit: NASA/CXC/SAO/M. White; Image processing: NASA/CXC/SAO/N. Cloud
Astronomers using the Chandra X-ray vehicles from NASA have “shrinking” a distant, Jupiter size “shrinking” world “while bombing with severe radiation.
The extrasolar planet or “exoplanet” is called 1227 b and is a cosmic baby at only 8 million years (remember, the earth is around 4.5 billion years old). And incredibly the world circles its star at a distance of only 8.2 million miles, a fraction of the distance between the sun and mercury, with one year that only lasts 28 days. This proximity means that the star with the name TOI 1227 and about 330 light years removes the planet with powerful X -rays.
This radiation removes the atmosphere of the exoplanet. In fact, the atmosphere of TOI 1227 B in around 1 billion years should have completely disappeared. This will reduce the exoplanet to nothing more than a small, rocky and barren core.
X -ray data from Chandra, which measures the amount of X -rays from Toi 1227, that of the exoplanet toi 1227b. The planet loses a mass equivalent to a full earth atmosphere every 200 years Credit: NASA/CXC/RIT/A. Varga et al.
The team behind this research estimates that TOI 1227 B ultimately lost the equivalent of the mass of two earths through the conclusion of his transformation. From now on, the world has a trade fair around 17 times the earth.
“It is almost unfathomable to imagine what is happening with this planet,” said Attila Varga, student team leader and researcher at the Rochester Institute of Technology (RIT). “The atmosphere of the planet simply cannot withstand the high X -ray dose that she receives from her star.”
While the parent star of this exoplanet is less solid than the sun (with about 10% of the mass of our star) and is cooler and weak in the optical light, it is actually brighter than our star in X -rays.
“A crucial part of the understanding of planets outside of our solar system is to take into account energetic radiation such as X-rays that they receive,” said team member and RIT scientist Joel Kastner in the explanation. “We believe that this planet is largely inflated or inflated from the star due to the continued attack of X -rays.”
An illustration of the Chandra X-ray observatory from NASA | Credit: NASA/CXC
The team used Chandra to determine how much X -rays roasted toi 1227 b. The researchers then used computer modeling to evaluate the effects of this radiation on the exoplanet and its atmosphere. This showed that the world loses the equivalent of the entire atmosphere of the earth about every two centuries from its own atmosphere.
“The future for this baby planet does not look great,” said Alexander Binks, member of the studio team and researcher at Eberhard Karls University of Tübingen. “From here toi 1227 b can shrink to about a tenth of its current size and lose more than 10 percent of its weight.”
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The researchers estimated the age of Toi 1227 B using the estimates of the speed of his host star through space and compared them at the speed of the nearby star populations with known age groups. The team also compared the surface brightness of Toi 1227 with models of star development.
Toi 1227 B stands out from other exoplanets aged less than 50 million years, since under the set it seems to have the longest and a guest star with the lowest mass.
The research of the team was accepted for publication in the Astrophysical Journal and appears as a form on the repository site Arxiv.
