Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ess.....2.0607p&link_type=abstract
American Astronomical Society, ESS meeting #2, #6.07
Astronomy and Astrophysics
Astronomy
Scientific paper
Previous studies of planet-planet scattering (e.g. Chatterjee et al. 2008 and Nagaswa et al. 2008) have predicted a broad range of inclination distributions for planetary orbits at the end of the scattering phase.
We demonstrate that essentially all apparent discrepancies between such studies disappear if:
(i) tidal effects are included for all close approaches within a critical tidal radius, rcrit, and
(ii) consistent measurement metrics are implemented.
Having reconciled previous results, we demonstrate that among planetary systems which have undergone planet-planet scattering, the orbital inclination distribution for planets with a pericenter distance less than a critical tidal damping radius, rcrit, is expected to differ significantly from that of planets beyond rcrit. Thus, we predict that if planet-planet scattering occurs in a significant fraction of planetary systems, then future Rossiter-McLaughin observations of the more distant transiting planets being revealed by NASA's Kepler mission will have a significantly different inclination distribution to that of the previously observed hot-Jupiters.
Boley Aaron C.
Ford Eric B.
Payne Matthew J.
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