by 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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“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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