Koi-730 As A System Of Four Planets In A Chain Of Resonances

Details Koi-730 As A System Of Four Planets In A Chain Of Resonances Koi-730 As A System Of Four Planets In A Chain Of Resonances

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ess.....2.0304f&link_type=abstract

American Astronomical Society, ESS meeting #2, #3.04

Astronomy and Astrophysics

Astronomy

Scientific paper

Among the multiplanet candidates discovered by Kepler, the four-candidate system KOI-730 stands as exceptional because the observed periods lie in a chain of first-order resonances. The period are in the ratios 3:4:6:8 to within a part in 1000, which would be extremely improbable if distinct eclipsing systems were blended together. Yet if all four objects orbit the same star, their masses must be in the planetary regime to fit the transit times and to satisfy long-term stability. Thus we interpret KOI-730 as a planetary system. We investigate the properties orbital migration must have had to assemble such an astounding chain of resonances. The configuration is complicated due to the high number of planets participating, yet the transit observations give precise constraints on architecture, so KOI-730 is a testing ground for any future theories of resonance capture via migration. Funding for this Discovery Mission is provided by NASA's Science Mission Directorate.

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