Constraining The Hot Jupiter Kozai Mechanism Connection

Details Constraining The Hot Jupiter Kozai Mechanism Connection Constraining The Hot Jupiter Kozai Mechanism Connection

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.6806c&link_type=abstract

American Astronomical Society, AAS Meeting #211, #68.06; Bulletin of the American Astronomical Society, Vol. 39, p.858

Astronomy and Astrophysics

Astronomy

Scientific paper

We have performed a systematic analysis to search for long-term trends in the radial velocity residuals of more than 120 exoplanetary hosts from the California-Carnegie Planet Search team to confirm or constrain the role that the Kozai mechanism plays in causing the hot Jupiter pile-up (an excess of exoplanets with 3-4 d periods). These long-term linear trends are likely indicative of stellar or substellar companions that could have induced the known exoplanet to migrate to its present position via the Kozai mechanism. Preliminary results suggest that the frequency of long-term linear trends are statistically similar in the hot Jupiter and the rest of the exoplanetary sample, thus suggesting that Kozai migration is not responsible for the majority of hot Jupiters.

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