Secular Chaos and the Formation of Hot Jupiters

Details Secular Chaos and the Formation of Hot Jupiters Secular Chaos and the Formation of Hot Jupiters

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ess.....2.0902l&link_type=abstract

American Astronomical Society, ESS meeting #2, #9.02

Astronomy and Astrophysics

Astronomy

Scientific paper

In a planetary system with well-spaced planets, the planets' orbits
can evolve chaotically due to secular interactions. The orbit of one
of the planets (usually the inner one) can gradually be driven to a
high eccentricity, whereupon the planet approaches the star and its
orbit is then tidally circularized. As we have previously shown, this
can explain the numerous Jupiter-mass planets that have been
discovered to orbit very close to the central star ("hot Jupiters").
Here we describe recent work that shows with a multitude of numerical
simulations that this process (secular chaos) can quantitatively
explain many of the observed properties of hot Jupiters, including how
frequently they occur and the range of Rossiter-McLaughlin angles. If
this explains the bulk of the hot Jupiters, it would imply that
systems with multiple giant planets are common.

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