TOKYO - Astronomers Norio Narita National Astronomical Observatory of Japan (NAOJ) discovered two giant planets and one star in a planetary system HAT-P-7.
In redorbit pages (25/1) said astronomers using the Subaru telescope to find the first evidence of the orbits of extrasolar planets were detected in 2008. They tried to explain the object of HAT-P-7b, which is located about 1040 light years from Earth in the constellation Cygnus.
They then took the imaging system with high-contrast instrument Subaru telescope latest generation adaptive optics (HiCIAO) to reveal a more complete picture of the object.
From measurements of the motion of objects during the three years up to 2012, they confirmed that one of the two candidate objects is the companion star HAT-P-7, known as HAT-P-7B.
On the other hand confirmation of the existence of giant planets orbiting other co-star, HAT-P-7 c which is outside or retrograde planet HAT-P-7b. It offers new insights into how the formation of the planets.
The team managed to confirm the long-term radial velocity of the system that shows the existence of the other giant planets, HAT-P-7 c, orbits between the orbits of HAT-P-7b and HAT-P-7B.
They believe that the existence of new stars and the outer planets may play an important role in shaping and maintaining the retrograde orbit of the innermost planet through the Kozai mechanism.
When a planet orbits tend to be pretty, HAT-P-7c changing inner planets orbit through Kozai mechanism, thus being backward. The evolution of the orbit of this planet is one scenario that could explain the origin of planetary retrograde / tilt / eccentric. (esy / JPNN)
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