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SUMMARY:Origins of Hot and Warm Jupiters from the Stellar Obliquity Distri
 bution - Malena Rice (MIT)
DTSTART:20221122T130000Z
DTEND:20221122T140000Z
UID:TALK192914@talks.cam.ac.uk
CONTACT:Dr Emily Sandford
DESCRIPTION:The obliquity of a star\, or the angle between its spin axis a
 nd the orbit normal of its companion planets\, provides a unique constrain
 t on that system's evolutionary history. In contrast with the solar system
 \, where the Sun's equator is nearly aligned with its companion planets\, 
 many hot Jupiter systems have been discovered with large stellar obliquiti
 es\, hosting planets on polar or retrograde orbits. I will demonstrate tha
 t the observed stellar obliquity distribution\, combined with tidal dissip
 ation from star-planet interactions\, points toward high-eccentricity migr
 ation as a key hot Jupiter formation mechanism. I will also present the fi
 rst results from the Stellar Obliquities in Long-period Exoplanet Systems 
 (SOLES) survey\, which is extending the sample of stellar obliquity measur
 ements to include systems with wide-orbiting planets that are more represe
 ntative of the primordial obliquity distribution. Combining these results 
 with additional constraints from TTV\, RV\, and transit surveys\, I will c
 onclude with a new paradigm for hot and warm Jupiter formation.
LOCATION:Ryle seminar room + ONLINE - Details to be sent by email
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