Astronomers discover hottest giant planet
WASHINGTON: Astronomers have discovered the hottest planet with a temperature of more than 4300 degrees Celsius.
In fact, the planet, called KELT-9b is hotter than most stars, according to a study published in the journal Nature.
“This is the hottest giant planet ever to be discovered,” said Scott Gaudi, a professor at Ohio State University in Columbus who led a study.
KELT-9b is 2.8 times more massive than Jupiter, but only half dense.
It is far from habitable, but Gaudí said there is good reason to study the universe that is not likely to be extreme.
“As has been pointed out by the recent findings of the collaboration MEarth, the planet around Next Centauri and amazing system discovered around TRAPENSE-1, the astronomical community clearly focuses on the search for terrestrial planets around small stars and cooler as Our sun, “said Gaudi.
“They are an easy target and there are many things to learn on potentially habitable planets orbiting around very weak stars in general.” Because the host star KELT-9b is larger and hotter than the Sun, it complements These efforts and provides a kind of touchstone for understanding how planetary systems form around hot massive stars, “he said.
Because the planet is locked on its star – like the moon is to Earth – one side of the planet always faces the star, and one side is in perpetual darkness.
Molecules such as water, carbon dioxide and methane can not form the day of the day as they are bombarded by too much ultraviolet radiation.
Night properties remain mysterious – molecules may form there, but probably only temporarily.
“It is a planet by one of the typical definitions of mass, but its atmosphere is almost certainly different from any other planet we have seen just by the temperature of its days,” said Gaudí worked on this study during the sabbatical year in the NASA Jet Propulsion Laboratory, in Pasadena, California.
Its star, called KELT-9 is even stronger – in fact, it is likely that the planet derailed through evaporation. It was only 300 million years old, it is young in time stars.
It is more than twice as big, and almost twice as hot as our sun.
Since the planet’s atmosphere was constantly exploited with high ultraviolet radiation, the planet can even generate a planetary material evaporated like a comet tail.
“KELT-9 radiates in the form of ultraviolet rays that can completely evaporate the planet,” said Keivan Stassun, a professor at Vanderbilt University, Nashville, Tennessee.
The planet KELT-9b encountered the extremely small Kilodegree telescope, or KELT.
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