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Failed Hot Jupiter Found in Wide Orbit around Kepler-1704 5nvklj





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Failed Hot Jupiter Found in Wide Orbit around Kepler-1704

Dragon
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Failed Hot Jupiter Found in Wide Orbit around Kepler-1704 Empty Failed Hot Jupiter Found in Wide Orbit around Kepler-1704

Post by Dragon Tue Aug 03, 2021 7:34 am

Astronomers from the Giant Outer Transiting Exoplanet Mass (GOT ’EM) Survey have discovered a long-period giant planet circling the 7.4-billion-year-old star Kepler-1704.

“Giant planet migration is typically invoked to explain the present day architecture of exoplanetary systems,” University of California, Riverside astronomer Paul Dalba and colleagues wrote in their paper.

“Theories of planetary migration abound but can broadly be categorized as disk-driven migration, caused by torques from the protoplanetary disk, or high-eccentricity migration, whereby a giant planet exchanges orbital energy and angular momentum with one or more other objects in its system and subsequently experiences tidal circularization during close periastron passages.”

“The characterization of giant planets and their orbits offers a window into which mechanisms might have been at play.”


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Failed Hot Jupiter Found in Wide Orbit around Kepler-1704 334pu7m
Dragon
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Post by Dragon Tue Aug 03, 2021 7:36 am

Failed Hot Jupiter Found in Wide Orbit around Kepler-1704 Image_9920-Kepler-1704b
Image credit: Sci-News.com.

An artist’s impression of the giant exoplanet Kepler-1704b.

The newfound giant planet, labeled Kepler-1704b, has a mass of 4.15 times that of Jupiter.

The alien world orbits its host star once every 989 days in an extremely eccentric orbit (e=0.92).

“Kepler-1704b is a failed hot Jupiter that was likely excited to high eccentricity by scattering events that possibly began during its gas accretion phase,” the astronomers said.


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Failed Hot Jupiter Found in Wide Orbit around Kepler-1704 334pu7m
Dragon
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Post by Dragon Tue Aug 03, 2021 7:37 am



There's a huge amount of variety among exoplanets – planets outside our solar system.

There are water worlds, lava planets, egg-shaped worlds, planets with multiple suns, and even planets with no sun at all!

What can we learn from all this weird, wondrous variety?

What does it tell us about both the exoplanets themselves and our own home planet?


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Failed Hot Jupiter Found in Wide Orbit around Kepler-1704 334pu7m

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