Using data from NASA's Kepler mission, two teams of astrophysicists directed by Mauricio Ortiz, University of Heidelberg and Simona Ciceri the Max Planck Institute for Astronomy, found independently a new gas massive exoplanet that is almost six times more huge than Jupiter, but which has just about the same size.
The newfound exoplanet, called Kepler-432B, is situated about 2,850 light-years away from Earth. He is one of the densest and enormous exoplanet ever discovered. The planet has a mass 5.84 times the mass of Jupiter and circles its parent star, the red giant Kepler-432 in 52 Earth days. The profile of its orbit is uncommon for a planet like Kepler-432B which is in translation about a giant star.
"Most of the identified planets move about giant stars in large, circular trajectories. With its small and highly extended orbit, Kepler-432B is an odd planet between the bodies of the same type, "said Dr. Davide Gandolfi at the University of Heidelberg in Germany, a associate in the Ortiz team.
"The host star, Kepler-432, has used its nuclear fuel from its core and is expanded steadily. Its radius is four times larger than the radius of our sun, and it will be even bigger in the future. The orbit causes the planet get too near to the star Kepler-432 at times and other causes him get too far, thus making huge changes in temperatures throughout the year on this planet. Throughout the winter, the temperature in the Kepler-432B is nearly 500 degrees Celsius," said Dr. Sabine Reffert, also of the University of Heidelberg.
"In the small summer, the temperature can ranges easily to 1000 degrees Celsius."
Mauricio Ortiz added: "the days of Kepler-432B are totalled. In less than 200 million years, the planet will be overwhelmed by the star to expand. "
"This may be the cause why we do not find other planets like Kepler-432B, astronomically speaking, they live very little."
So far, astrophysicists have discovered only 5 exoplanets, comprising Kepler-432B, which has the orbit near to a red giant star. Of these, only two, the Kepler-432B and the Kepler-91b, were witnessed close enough to be able to conclude its mass and its size. Two others were perceived only measures the planetary transit, while one was discovered by spectral measurements. If a very short-lived wonder, astrophysicists do not expect to perceive many of these examples.
"At this point, there are two prospects: it was actually very lucky to have witnessed these two exoplanets or planets as they live longer than formerly believed," said Simona Ciceri.
The finding of Kepler-432b is explained in two papers issued in the journal Astronomy & Astrophysics. (Below)
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