Other
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21820302r&link_type=abstract
American Astronomical Society, AAS Meeting #218, #203.02; Bulletin of the American Astronomical Society, Vol. 43, 2011
Other
1
Scientific paper
The true mutual inclination between orbits in a planetary system is a key indicator of dominant planet formation mechanisms. It is, therefore, unfortunate that the vast majority of current exoplanet observations are only sensitive to line-of-sight inclinations, at best. Even in systems with multiple transiting planets, arguably the best observational case, the line-of-sight inclinations are a weak constraint on the mutual inclination between planetary orbits. However, the large and homogeneous observations from the Kepler Space Telescope provide a population that can be assessed statistically in order to estimate the typical mutual inclination of exoplanetary systems. Lissauer et al. 2011b use the Quarter 0-2 Kepler observations presented in Borucki et al. 2011 to show that there is a population of planetary systems with multiple, small (radii between 1.5 and 6 Earth radii), short-period planets and that the typical mutual inclination in these systems is only a few degrees. Based on these new Kepler results and other observations, I will present the current best understanding of the inclination distribution of planetary systems and prospects for future progress.
Kepler was competitively selected as the tenth Discovery mission. Funding for this mission is provided by NASA's Science Mission Directorate.
Kepler Team
Ragozzine Darin
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